318 COLEOPTERA OF NORTH AMERICA

The

scutellum isobtuselytriangular in

some

species of Cyl- lene, rounded in the other genera; the

mesonotum

is punctured, and hairy at the sides, and has a large undivided, very finely striate stridulating surface.

The

genera are numerous, and indicate three groups; the affinities are in various directions, to Megaderus, Callidium, and byagradualtransitioninEuderces,etc.,towardscertainLamiides.

Nearly all the species of this group are varied with bands of yellow, white, andblack pubescence,andthe sculptureis always of fine punctures; in

some

species small elevationson the pro- thorax areintermixed with the punctures.

Groups

may

be defined as follows^:

—

Epimeraof metathorax produced over the anglesofthe1st ventral seg- ment, so as to inclose the hindcoxaeexternally; episterna ofmeta- thorax usually wide;

Frontshort,intercoxal process rounded. Cyllenes.

Frontlarge,intercoxal process acute. Clyti.

Epimeraofmetathoraxnotproduced,episterna linear; front large;inter-

coxalprocess of abdomenacute. Anaglypti.

GroupI.

—

Cyllenes.

The

head is comparativelysmall, the front short and oblique, theantennae in Cyllenebetterdeveloped thanin theother genera, andlonger than the

body

in %^{, nearly}aslong in 9 ; in some of the species ofthatgenus theyare thicker atthe base, asin

many

Callidia.

The

body is rather stouter and less convex than in the other groups; the presternum is sometimes very broad, and the mesosternum gibbous, or perpendicularly declivous in front; the episternaofthe metathoraxare wide,andthe epimera prolonged over the side angles of the 1st ventral segment, the intercoxal process of which is rounded in front.

The

legs are moderate, and not very unequal inlength, scarcely clubbed, not spinose at tip.

The

affinities are partly with Megaderus, and partly with Callidium; the scutellum is usuallyrounded behind, but is quite distinctly triangular in some species of Cyllene.

The

genera

may

be tabulated as follows^:

—

Pronotumtransverselyexcavatedatthe sides,near thebase,prosternum perpendicularattip, mesosternumusually perpendicularinfront.

Cyllene.

Mesosternumobliqueornearlyflat,prosternum declivousat tip,not per- pendicular, pronotum not excavated at the sides, but only rounded, and constricted atbase_;

CERAMBYCIDAE. 319 Antennae compressed,subserrate. Glycobius.

Antennaefiliform

;

Mesosternumdeclivous. Calloides.

Mesosternumnearlyflat, episternanarrower. AKiioPALr/s.

Glycobius Lee. is founded upon G. speciosus Say, a large black and yellow species whichinfests the sugar maple.

Calloides Lee. contains G. nobilis Harris, a large species of the Atlantic States, and the nearly allied G. Lorquini Buquet, of California. Arhopalus Serv. (Sarosesthes

Thomson)

con- tainsonly C.

fulminans

Fabr.

Group II.—Clyti.

The

head is largerthan in the Cyllenes, andthe front

much

longer, sometimesperpendicular, and quadrate_; the antennae are alwaysshort, notvery different in the sexes, filiform, or slightly thickenedexternally; theepisternaofthe metathorax areusually wide, and the epimera are produced over the angles of the 1st ventral segment, the intercoxalprocess ofwhich isacute.

The

thighs are usually clavate, the hind pair frequently very long, and occasionally spinose attip; the first jointof the hind tarsi usuallyverylong.

Front rounded, declivous, thighs not spinose at tip,episterna ofmeta- thoraxwide

;

Headnot carinated. Clytds.

Headcarinated. Xylotrechus.

Front quadrate perpendicular^; headnotcarinated;

Episternaof metathoraxwide. Neoclytus.

Episternaof metathoraxnarrow. Clytantuus.

Clytus isrepresented by C. marginicollis Lap.in theAtlantic States, and C. lanifer Lee. in Arizona.

Clytanthus by G. ruricola Oliv. andalbofasciatus Lap. inthe Atlantic States.

The

othertwo genera are distributed overour whole territory, and contain

many

species.

GroupIII.

—

Anaglypti.

The

head is also large, and the front long, and quadrate; the antennae slender, moderately ^long, with the joints3-5 sometimes spinoseattip; theprothorax ^isnotnarrowed in front,butalways

much

constricted behind; the elytra are frequently gibbous at the base, and declivous at tip, and sometimes have transverse

320 COLEOPTERA OF

NORTH

AMERICA.

ivory bands.

The

episterna of the metathoraxare narrow, and the epimera are scarcely produced over the angles ofthe 1stven- tral; the intercoxal process is acute.

The

legs aremoderate in length, and thethighs

somewhat

strongly clubbed, and not spi- nose at tip; the 1stjointof the hind tarsi islesselongated than in the other groups.

The mesonotum

is not punctured at the sides, and is covered withvery fine stridulatinglines.

In

some

of the generathemiddle coxal cavities arenearly or entirelyclosed externally,but as inotherportions of theseries,the transition is accomplished by such slight gradations that the character seemsto havelittlevalue.

2djoint of antennae equalto4th;

Antennae notspinose, elytrawithoutivory spots. Microclytps.

2djointof antennaeshort. 3dlongerthan4th;

Elytrawithoutivory spots;

Eyesoblique, emarginate. Cyrtophords.

Eyesentire, rounded. Tillomorpha.

Elytrawith atransverseivoryband. Euderces.

Microclytus is founded upon C. gazellula Hald. a species of the Middle States, having entirely theform and coloration ofthe

European

Anaglyptusmysticus, but smaller,and differing essen- tially

by

the 2djoint of theantennas beingfullyhalf aslongasthe 3d, and scarcely shorter than the 4th joint; theflying hairs are peculiarlylong and

numerous

; the eyesare oblique, emarginate above, and pointed behind, as if the usual deeply emarginated form had been shortened by the obliteration of the upper part.

The

same form is seen in Gyrtophorusverrucosus, butlessacute at the upperangle. In Tillomorpha geminata (Hald.) the eyes are oval,not atall emarginate,the upper part being absent; and

in Eudercesthey are entirelydivided, the lower part being emar- ginate, acutely pointed above, and the upperpartsmall, distant, and oval.*

* Lacordaire,Gen.Col. ix,89,observesthat this character, mentioned by

me

in the original description of the genus, has completely escaped him; it is quiteobvious inall the specimens before me,though in Eu.

picipesthetwoparts of theeye areconnected,as in Tetropium,byaline ofcorneous material, without lenses; even this line is wanting in Eu.

pini,sothat theeyebecomesascompletelydividedas inTetraopes.

CERAMBYCIDAE. 321 Tribe XII.—

AGAJLLISSINI.

A

^tribe

^composed

^{ofa single} genusAgallissus

Dalman

{Cryp- topleura Lee.) which is remarkable for having the epipleuras strongly sinuated near thehumeri.

Head

small, front short, ver- tical inA. clerinus, quadrate, oblique inA. gratus; eyes finely granulated, deeply emarginate ; antennal tubercles not elevated, antennaeslender, shorter than thebody inboth sexes, finelypunc- tulate, and sericeous, 11th joint feebly appendiculate ; mandi- bles small, stout, acute, genae moderately short;

mentum

trans- verse, of theusual form, entirelycorneous_; palpi short, equal,not dilated. Front coxa? small, not prominent, cavities rounded, open behind; middle coxal cavities angulated externally, meso- sternum suddenly declivous in front.

Epimera

of metathorax very wide in front, gradually narrowed behind; ventral segments slightly decreasing in length; legs short, slender, thighs not cla- vate, spurs small, 1st joint of hind tarsi but little longer than the 2d.

The

prothoraxisroundedonthesides,nottransverse, theelytra are wider at base than the widest partof the prothorax, and the humeri are ratherprominent, as in

many

Lepturidae.

The

scu- tellum is obtuselyrounded behind, the

mesonotum

is smooth and polished, with a large, very fine stridulatingplate. Flyinghairs ofmoderate lengthare seen over the general surface of the body, andou thelegs.

Two

speciesoccurin ourfauna,A. grains (Cryptopleura grata Hald.)fromTexas, and Northern Mexico, shining black,sparsely punctured, with the elytranarrowed behind, truncate and finely serrate attip, ornamented with yellow spots, ofwhich the basal pair are elongate _; and A. clerinus from Florida, opaque black, very coarsely and densely punctured; prothorax red,with faintly indicated dorsal smooth spots; elytra parallel on the sides,

rounded at tip, with a round basal spot, and two broad trans- verse bands brightscarlet. Length 18

mm.

I consider this as thenearest approach

made

by the genuine Cerambycidae tothe Stenocorusgroupof Lepturidae. Itis,how- ever,quite an isolated form, and the

two

speciesabove mentioned shouldprobably be regardedas distinct genera.