252 DIPTERA. 
specimens the tibie and tarsi piceous; hind tibie curved in the male; pulvilli yellowish. Tegule 
whitish, Wings grey, slightly infuscated on the costa and along the veins; small cross-vein before the 
middle of the discal cell ; apical and posterior cross-veins slightly curved. 
Hab. Mexico, Cordova (Hége), Jalapa (M. Trujillo). —Braziu. 
Two male specimens. 
: CORDYLIGASTER. 
Cordyligaster, Macquart, Dipt. Exot. ii. 3, p. 90 (1843). 
Front of the male much narrowed behind, that of the female as broad as the eyes; face not carinated ; eyes bare, 
descending nearly to the lower part of the head; cheeks narrow ; vibrissal swellings parallel ; vibrissce 
inserted at the oral margin; root of the antenne beneath a line drawn through the centre of the eyes; 
third antennal joint longer than the second ; arista long-plumose. Proboscis and palpi short. Abdomen 
long and slender ; the first segment, and the second more or less, elongate, cylindrical, and narrower 
than the following segments; discal and marginal macrochete present. Legs slender; foot-claws and 
pulvilli elongate in the male. Wings shorter than the abdomen ; apical cell opened near the wing’s tip; 
curvature of the fourth vein angular, sometimes with a short appendage ; posterior cross-vein beyond the 
middle between the small cross-vein and the curvature of the fourth vein. 
Bigot, in his synoptical table of the Dexine (Revue d’Entomologie, 1885, p. 267), 
incorrectly states “that in the genus Cordyligaster the discal macrochete are absent 
from the median segments of the abdomen.” 
The genus was established by Macquart on Dexia petiolata, Wiedem., from Brazil. 
A closely allied species from Central America is here described. 
1. Cordyligaster minuscula, sp. n. ¢ @. (Tab. VI. figg.7; 7a, head.) 
Shining black; face, cheeks, some tomentum on the thorax, and the front margins of the second and third 
abdominal segments whitish ; costal part of the wings brown. 
Length 7°5-11°5 millim. . 
Frontal band black ; occiput grey, the lower part swollen, its pilosity and the beard whitish. Antenne black ; 
third joint twice as long as the second. Proboscis and palpi black, the terminal lips of the former dark 
rufous. Thorax in well-preserved specimens with some whitish-grey tomentum, and before the transverse 
suture with more or less distinct black stripes; scutellum black. Abdomen three times as long as the 
thorax, shining black, with a slight steel-blue tint; first segment longer and narrower than the second ; 
third segment the broadest; second and third segments with narrow whitish front borders; discal and 
marginal macrochetz present, even on the first segment. Legs black, with scattered, weak bristles ; 
hind tibize thin at the base, very slightly curved; all the tarsi ( ¢ ) longer than, or ( 2 ) of nearly the same 
length as, the tibie; foot-claws and pulvilli elongate in the male, the pulvilli greyish-yellow. Tegule 
dilute brownish; halteres yellow. Wings brownish-grey, the costal region up to the third vein more 
intense brown ; third vein from the base to beyond the small cross-vein with a row of short bristly hairs ; 
small cross-vein a little before the middle of the discal cell; curvature of the fourth vein with a short 
appendage ; apical cross-vein curved inwards at its base ; posterior cross-vein undulate. 
Hab. Mexico, Rio Papagaio, Tierra Colorada 2000 feet, both in Guerrero, Teapa in 
Tabasco (H. H. Smith). 
A long series of specimens of both sexes. 
From Cordyligaster petiolata, Wiedem., this new species differs by its much smaller 
size, the proportionately shorter abdomen, the infuscation on the costa of the wings 
