DIPTERA. 457 
CLINOGASTER * (to follow the genus Ancylogaster). 
Clinogaster, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 189 (1892). 
Head:a little broader than the thorax; front slightly prominent, nearly as broad as the eyes (¢), with 
parallel sides, somewhat enlarged near the root of the antennz; frontal bristles weak ; no orbital bristles 
(3); on the vertex two stronger bristles; face slightly inclined, bare; cheeks broad, their inferior 
portion as long as one-third of the longitudinal diameter of the eyes; vibrissam rudimentary; occipu 
swollen. Eyes bare. Antenne elongate, scarcely shorter than the face; first joint very short, the 
second much longer, the third twice as long as the second; arista bare. Proboscis a little longer than 
the head, with distinct terminal lips; palpi....(?). Thorax quadrate, with macrochete. Abdomen 
elongate, curved downward, composed of four segments; the first three of equal length, the anal segment 
much shorter, the second segment the broadest; macrochete very short and few in number, only at the 
hind margins of the segments; male-genitalia somewhat exserted. Legs rather slender, with scattered 
bristles ; front tarsi longer than the tibie ; foot-claws and pulvilli elongate(¢). Tegule large. Wings 
shorter than the abdomen ; apical cell closed and shortly petiolated ; curvature of the fourth vein with 
an acute angle and with a short appendage ; posterior cross-vein beyond the middle between the small 
cross-vein and the curvature of the fourth vein. 
1. Clinogaster notabilis. (Tab. XIII. figg. 17, ¢; 17a, head.) 
Clinogaster notabilis, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 189°. 
Black ; face and reflections on the thorax whitish ; hind margins of the first two abdominal segments narrowly 
yellow ; anal segment and base of the antenne rufous; wings with a brown shadow at the end of the 
costa, their base yellowish. 
Length 12°5 millim. 
Front blackish ; face and posterior orbits whitish, with silvery reflections ; cheeks cinereous ; occiput black. 
Antenne brownish-black, the basal joints, the base of the third, and the arista rufous. Proboscis shining 
black (palpi not visible in the single specimen seen). Thorax and scutellum black; the thorax with 
some white tomentum in front and with four black stripes, the two median linear, the outer ones much 
broader ; pleurse with white reflecting spots. Abdomen black; first and second segments with a narrow 
yellow hind-border ; third segment somewhat cinereous; anal segment dark rufous; genitalia turned 
towards the venter ; some short macrochete at the hind margins of the second, third, and anal segments. 
Legs black; coxee on the front side with white reflections; tibie piceous ; front femora with regularly- 
arranged, rather short bristles on the upper and under sides; middle and hind femora with some longer 
bristles beneath; middle and hind tibize with some long bristles; foot-claws and pulvilli elongate, the 
pulvilli blackish, with a yellowish tip. Tegule brownish-grey, with a narrow yellowish border. Wings 
grey, their base brownish-yellow, this coloration extending along the costa; at the end of the costa a 
more obscure brown spot, descending to bencath the third vein ; small cross-vein oblique, a little beyond 
the middle of the discal cell ; apical and posterior cross-veins distinctly curved ; petiole of the apical cell 
bent upward ; the costal vein prolonged a little beyond the end of the third vein. 
Hab. Mexico!, Venta de Zopilote in Guerrero (H. H. Smith). 
A single male specimen. 
PENTHOSIA f (to follow the genus Clinogaster). 
Penthosia, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 189 (1892). 
Head as broad as the thorax ; front slightly prominent, broad in both sexes; frontal bristles weak, on the 
vertex two stronger bristles ; face somewhat inclined, on each side in its superior half with a row of fine 
hairs ; cheeks broad, their inferior portion more than half as long as the longitudinal diameter of the 
* xdivw (to bend); yaorje (abdomen), 
t+ 7wé:Oos, mourning-cloth. 
