132 DIPTERA OF NORTH AMERICA. [PART IV

auxiliary vein, the course of tlie second longitudinal vein, the position of the marginal cross-vein, the hairy

appearance

of the

male

^forceps,

and

finally the general

appearance and

colora- tion of the body, render evident itsclose relationship to

Teucho-

lahis.^

The

other

form

isat once conspicuous

by

itsrostrum,

which

is

much more

elongated

than

isthe casein Teucholabis,

and

gives

itthe

appearance

ofalihamphidia. This resemblance,

however,

is entirely superficial; the venation of the wings, as well as the structure of the body, very plainly

shows

that these insects are

most

closely allied to Teucholabis.

The Rhamphidia

chalybei- ventris

Loew

(Wieii.

Entomol. Monatschr.

1861, p. 33), from

Cuba,

is not alihamphidia, but belongs to this

form

of

Teucho-

labis.

Descriptionofthe species.

1.

T. complexa

^{0. S.}

%

^{and 9-}

—

Obscureocliracea,thoracisvittis tribusbrunneis; alis liyalinis,stigmate subrotundo,fusco.

Brownish-ochraceous, thorax with three brown stripes; wings hyaline, stigma rounded, brown. Long.corp. 0.25

—

0.27.

Syn. Teucholabiscomplexa 0.Sacken,Proc.Ac.Nat.So.Phil. 1859,p.223.

Head dark brown,

with a

hoary bloom on

the front; antennce

and

palpiblack; theformer

with

oblong joints

on

the flagellura.

' Thisvolumewasalreadyin press,when,through the kindnessof Dr.

Schiner,Ireceived hiswork ontheDipteraoftheVoyageofthe "Novara"

(fieise d, Oesterr.FregatteNovara, etc. Zoolorjischer Theil; Diptera;Wien, 1868); it contains a detailed description, with figures,of the

new

genus Paratropesa,the generic charactersofwhichhadbeen publishedsometime earlier {Verz. Zool. Bat. Ges. in Wien, 186G). Paratropesa (type: P.

singularis Schin.,from Colombia, South America) isevidently the above- mentioned form^ofTeucholabis, ofwhichIhave hada glimpse, in 1865, in Mr. Bellardi'scollection. ThecomparisonofwhatIsayabout ^it,as Ifind it

among my

^notes,with Dr.Schiner's description shows,that

we

agree inthe interpretation of the veinsforming the submarginal and firstpos- terior cells; but that

we

disagree in the interpretation of the anterior branchof thesecond vein,which I consideredasasupernumerary cross- vein. Such aninterpretationpermits

me

toretainthegenus

among

those with a single submarginal cell, as its relationshipto Teucholabis seems otherwise evident to me. Paratropesaisundoubtedlyagood genus,and

I

am

gladtohavehadtheopportunitytoidentifyitbefore the issueofthe presentvolume. Dr. Schiner's description of Paratropesa will be found intlieAppendixII,at theendof thisvolume.

THAUMASTOPTERA. 133 Thorax

brownish-ochraceous, with three

brown

^stripes; the inter- mediate one beginsatthecollare; thelateralonesareabbreviated before

and extended beyond

the suture behind; scutellum yellow, nictathorax

more

orless

brown

in themiddle,yellow

on

the sides_; pleura?yellow,with a

more

orless distinct

brown

stripe,

running from

the collare to the base of the halteres; the latter pale.

Feet

pale yellowish; tips of the

femora and

of the tibiae

brown

_;

lastjoints of thetarsibrown.

Abdomen

brown,posterior

margins

of the

segments

a littlepaler;

male

forcepstawny.

Wings

(Tab.

I, fig. 12) hyaline, veins

brown,

^costal

and

subcostal

taWny

;

anterior

margin

distinctlyhairy;

stigma brown,

rounded,near the tip of the first longitudinal vein.

(For

thefurther description of the venation

compare

the generic characters.)

Hah. Washington,

D. C. ;

Trenton

Falls,

N.

Y., in

June

;

Illinois (Mr. Kennicott).

A specimen

from Georgia, in the Berlin

Museum, seems

to belonghere.

One

of

my

specimens, a male,

shows

a slight difference in the venation; the latter portion of the second longitudinal vein is

more

straight,

and

the cross-vein, closing the discal cell, is a

little nearer to the

apex

of the wing,

which changes

the shape of the discal cell.

The

origins,! description of this .species

was drawn

from four specimens; I

have

only

two

left atpresent.

Gen.

XV. THAUMASTOPTERA.'

Not having

seen this

European

genus, Itranslate thefollowing description

by Mr. Mik, from

the Verli. Zool. Bol. Gesellsch. in Wien, 1866, p. 302.

The appended woodcut

is copied

from

a figure inthe

same volume

^:

—

Head

rounded, transverse,

somewhat

flattened; occiputrather stronglydeveloped;

rostrum moderately prolonged

_; palpi four- jointed, the

two

last joints of equal length,

more

slender

than

the

two

first; front

broad

in

both

sexes; antennte rather short, 16-jointed; first joint cylindrical, oi the lengthof the rostrum, the second cyathiform, transverse, the following joints oblong, sessile,

somewhat

verticillate, gradually diminishing in size; the last joints indistinct.

Eyes

round, glabrous.

Thorax

convex, gibbose, projecting over the

narrow

collare; transverse suture distinct; scutellum

narrow

;

metathorax

well developed.

Abdo-

' Sai/jaayTsf,wonderful; mifi), wing.

134

DTPTERA

OF

NORTH AMERICA. [part

IV.

men

with seven segments, short^; the forceps with stout, obtuse

appendages

^; ovipositor long, with a gently arcuated tip.

Feet

long

and

slender; the tibiae without spurs;

empodia

indistinct;

ungues

smooth.

Wings

comparatively long; longitudinalveins pubescent,the

margin

fringed with hairs; the auxiliary veinends in the costa aboutthe

middle

of the lengthof the

wing

; second longitudinalvein not forked, connected

by

a cross-vein withthe first longitudinal vein; third longitudinal vein not forked; the fourth longitudinal vein is

forked a short distance

from

the small cross-vein; its prin- cipal

branch

runs straight to the

margin

; the anterior

branch

isforked; thebranches of this fork are longer than the petiole; fifth

and

sixth veins straight; the seventh is

some- what

sinuated_;

no

discal cell; the subcostal cross-vein is very near the origin of the prcefurca; the great cross-vein is in the

middle

of the wing, quite far

from

the branching ofthe fourth vein; hence, the second basal cell is almosthalf aslong as the first; the anal angle of the

wing

rounded, but little projecting.

Type

of the

genus

T. calceata Mik, found near Gortz, in Illyria.

The

author describes it as a very delicate, paleyellow species, about 0.2 lin. long, with

dark brown

tipsof the

femora

and

of the tibiae,looking like

Erioptera imbuta Meig.

Itis

on

the author's authority that Ileave this

genus among

the

Limno-

hina

anomala,

to

which

he refers it.

EnioPTErjNA.

135