This specimen differs from the type in possessing a broad blackish stripe on the caudal margin of the pronotum and a pair of circular, slightly cephalad black spots on the middle of the same plate. This individual is larger than the measurements given in the original description and has a slightly different pronotum disc pattern. Head with narrowest part of interocular space approximately equal to greatest dorso-ventral depth of eyes; antennae around a.
Tegmina elongate, costal-margined, more distinctly proximal than distal; apex narrowly rounded; sutural margin separate in distal third, rounded to apex; the vein is prominent, the costal area is only irregularly reticulated; analarea about two-fifths length of tegmen, anal vein slightly but uniformly arcuate. Related to L.ignavus Westwood, but differs in ear-like head appendages, reduction of lobes on median and caudal limbs, absence of particularly distinct lobes on second abdominal segment and presence of such a fifth segment, and shorter caudal limbs. Metanotum with median segment about two-thirds length of mesonotum with width of median carina varying throughout length; median segment subquadrate, slightly narrowed cephalad,.
The abdomen is considerably longer than the remainder of the body, with a distinct longitudinal median carina and a pair of additional lateral carins, the latter of which are developed on the caudal margins of the first and second proximal segments with distinct, bushy tubercles. The general surface lumps of the abdomen have largely resolved. 798 PROCEDURE OF THE ACADEMY OF [NoV., fourth abdominal segment; caudal tibia. slightly longer than the femora. Head longitudinal, not equal; occipital protuberance with three depressed longitudinal lines.. caudad; ocelli present, the head large, elliptical, placed between the insertions of the antennae, the caudal pair smaller, placed diagonally around the head third of the occiput; eyes slightly elliptical, protruding, slightly flattened; antennae composed of about twenty-five joints, some very ill defined, and, except the proximal two and the terminal joints, the segments are very slender and elongated, the whole antenna reaching posteriorly above the tip of the abdomen, the second joint slightly blown up .
800 PROCEEDINGS OF THE ACADEMY OF [Nov., segment; subgenital operciile moderately produced, scoop-like, reaching to caudal margin of eighth dorsal segment.
804 ^ PROCEEDINGS OF THE ACADEMY OF [NOV.^
Furcula Present as extremely few knobs; supra-anal plate with a longitudinal median groove, outline slightly narrowed with apex abruptly rounded except.
TETTIGONID^
808 ACTIVITIES OF THE ACADEMY OF [Nov. Includes mexicana, otomia, salicifolia, rhombifolia, totonaca, salvifolia and huasteca. Of these, otomia, salicifolia, rhombifolia, totonaca and salvifolia belong to the genus Microcentrum, 1873; huasteca to AmUyconjpha, 1873; and Mexican remain the type. This rather unusual species varies somewhat in size and from greenish brown to distinctly green in color, with the small fuscous rings virtually absent in some specimens.
This species is more Australian than the others of the genus, having been recorded only once from outside Costa Rica, then from San Geronimo, Guatemala. The large series examined is fairly uniform in size, but the color varies greatly, both in the general color and the presence or intensity of the fuscous annuli of the tegmina. Most of the males have the tambourine later or less often marked with brownish, and the lighter specimens sparsely marked with fuscous have the femoral spines with the dark color limited to a very slight apical touch.
The material examined fully demonstrates the variety of this species in color, some being strongly dotted with fuscous and with the usual large annuli distinct, while others are almost uniformly green. 811 near distal third of tegmen; anterior iihiar vein reaching the su+ural margin a short distance from the furcation of the radial vein. Wings extend beyond the closed tegmina, a distance approximately equal to the length of the pronotum.
Ovary about twice as long as pronotum, sabre-shaped, greatest width slightly less than a third of length and in distal half, apex acute, dorsal margin straight with a slight proximal curve, ventral margin almost straight in proximal half, strongly separated in distal half, margins of distal halves crenulato-dentate; the subgenital plate is very deeply and triangularly cut, the base of the cuts is rounded, the lateral outgrowths of the plate are slender and finger-like. In addition to the type, a badly damaged male specimen from Esparta (altitude 50 meters; no. 45; P. Biolley) is also referred to with some doubts about this species. The head with the occiput is very slightly rounded; fastigium declinescent, strongly compressed, proximal part narrowly sulcate, distal part without sulcus; fastigium of the face touching the fastigium of the crown; eyes subglobose, rather prominent; antennae, when laid back, exceed tips of closed wings by more than length of body, proximal joint not compressed.
Pronounced deplaned dorsad, cephalic margin very slightly arcuato-emarginate, caudal margin arcuate, lateral angles moderately rounded cephalad, sharp caudad; lateral lobes deeper than. Wings extending beyond thetegmina a distance slightly greater than length of pronotum; sutural margin straight, costal margin arcuate. Generally color oil green; eyes are brown; antennae filled with blackish; sutural margins of tegmina and faintly on wings marked with brownish black, the areas between nerves alone being colored.
814 PROCEEDINGS OF THE ACADEMY OF ' [XOV., Measurements
814 PROCEEDINGS OF THE ACADEMY OF ' [XOV., Measurement. 815 of the spine on the median and largest femora, and from the revistil in the form of the lateral lobe of a pronotmni, then a number of curved femoral and ovarian spines. X 2.) lateral ridges and clypeus and antennal annulations irregular, bister; lateral ridges and cephalic face of mandibles also Indian yellow;. These specimens are undoubtedly referable to this species, as the cephalic femora of the San Jose specimen is approximately eight millimeters long, instead of the five and a half given in the original description.
These specimens have solid black faces with no visible lines. the costal part of the tegmina is more or less strongly pale greenish. It can be distinguished from C. ignobilis Brunner, a close ally, by the shape of the anal segment, supraanal plate, and unexpanded styles. 820 PROCEEDINGS OF THE ACADEMY OF [NoV., dian femora slightly larger than the cephalic and similarly armed;.
The main thoracic sutures, the coxae, all femoral spines, the posterior and median regions of the subgenital plate of the male, and the distal half of the egg are marked with blackish color. Tegmina subequal in length to head and pronotum, greatest width much greater than half length; costal and sutural margins broadly arcuate; apex rounded dorsad, obliquely truncated ventrad; dorsal field of tegmen distinctly wider than lateral; the humeral, discoid, and anal veins are visible, and the others are fused into an irregular network of nerves. 826 procp:edings of the academy of [Nov., dorsal margin straight, ventral margin separate, apex acute, proximal half subequal, margins entire; subgenital plate subtrigonal, apex very shallowly emarginate.
Caudal femora slightly shorter than the length of the body, the proximal half strongly inflated and tapering to the slender subequal distal third, ventral margins with three spines on the distal third; tibas slightly shorter than the femora, dorsal margins with numerous spines, ventral margins with several on the distal part. Caudal femora with the sections ventrad of the mediolateral line blackish, dorsad of this line mixed prout's brown and woody brown; caudaltibiae and tarsi bister. Tegmina long, reaching almost to the tips of the caudal femora, greatest width about three times as long (the tips damaged); costal arch arcuate proximad; mediastinal vein straight, humeral vein with three rami, discoid with two rami, median with two, of which the dorsal divides again, ulnar vein undivided.
Head with the eyes walnut brown, a broad ill-defined postocular barof seal brown present, extending to mesad on the caudal portion of the head, united and. Pronotum bright walnut-brown (x PROCEEDINGS OF THE ACADEMY OF [NoV., with a very fine bvitreal pattern of lines and l)lots of-dykes brown covering the surface, distinct mid-hourly vitreous. Caudal femora obscured dorsad with vandyke brown, a distinct light section along the ventral carina of the pagina, the carina itself proximad alternately light.
832 PROCEEDINGS OF THE ACADEMY OF [Nov., third, geniculate lobes rounded, the inner ridged, inner ventral margin with a pair of faint ridges distally, side sculptured as in A. General color watery brown, becoming tawny-olive theventer, the proximal parts of the femora, the distal part of the caudal.
GRYLLID^
These specimens differ somewhat in coloration from the original specimens described by Saussure, but they are definitely this species. The caudal femora of these specimens are shorter than in the type specimen measured by Saussure, four and five millimeters instead of six. These specimens are questionably referred to these species because of the shape of the palp end nodes, which are exactly as in O.tibialis, rather than the funnel-shaped type in foundincayennensis.
On the other hand, the male tegmina is not as in tibialis, but is typical of. Tegmina very slightly shorter than apex of abdomen; midvein with about eleven branches, lateral field with margin moderately curved far. Cephalic femora distinctly longer than the pronotum, moderately inflated; cephalic tibiae equal to femorrain length, very slightly and gradually tapering, the tympanum perforates caudad.
Caudal femora slightly shorter than the tegmina, considerably inflated, the geniculate area small and with the lobes closely rounded; caudal tibiae about four-fifths of the length of the femora, dorsal margins spinulose. General color cinnamon, the pronotum slightly sloping towards umber; eyes vandyke brown; mouthparts and antennae pale; belly. It is with some doubt that I place this specimen among this species, as it differs considerably in colour, and the coccygeal bones are somewhat smaller than Saussure's dimensions.
Orthopteran species recorded by the author in Costa Rica The following list of one hundred and ninety-five species represents the species recorded by the author in this and previous articles {see p. . 790) bearing entirely the Orthoptera of Costa Rica.
BLATTID^
MANTID^
ACRIDID^
TETTIGONID^^