198 DIPTERA. 
black ; the second and following segments with white front borders; first and second segments laterally 
rufous and somewhat transparent; on the hind margins of the segments are long macrochete. Legs 
black ; posterior tibiee with several rather long bristles. Tegule whitish. Wings hyaline, towards the 
tip with a dilute brownish tint along the veins; small cross-vein a little before the middle of the discal 
cell; apical and posterior cross-veins oblique and nearly straight. 
Hab. Muxico, Teapa in Tabasco (H. H. Smith). 
A single female specimen. 
95, Anisia aberrans, sp. n., 3 2. 
Head whitish ; thorax grey, with black reflections ; abdomen rufous, the dorsal surface black, the sides with 
white reflections ; frontal band, antenne, and legs black; palpi rufous. 
Length 5-6 millim. . 
Front white, as broad as the eyes ; frontal band as broad as the lateral portions; frontal bristles descending as 
far as the end of the second antennal joint; face and cheeks white, somewhat silvery ; vibrisse surmounted 
by several shorter bristles. Antenne nearly as long as the face; basal joints short ; third joint five times 
as long as the second; arista thickened at the base. Proboscis black, with the terminal lips rufous ; palpi 
filiform, pale rufous. Thorax whitish-grey, the thoracic dorsum with black reflections (which sometimes 
are so largely extended that there remains only a grey transverse stripe at the suture); scutellum grey. 
Abdomen conical ; first, second, and third segments on the dorsal part black, laterally yellowish-rufous 
and somewhat transparent; anal segment black ; the second and following segments with white reflections 
on the front borders; all the segments have rather long marginal macrochetz. Middle tibiw with some 
long bristles ; hind tibiae with several bristles of unequal length; foot-claws and pulvilli short. Tegule 
whitish. Wings with a dilute brownish tint; small cross-vein a little before the middle of the discal cell ; 
apical cross-vein oblique and straight ; posterior cross-vein less oblique and very slightly curved. 
Hab. Mexico, Amula 6000 feet, Omilteme 8000 feet, both in Guerrero (1. #. 
Smith). | 
Three male specimens. 
A female example, from Omilteme, agrees with the above description of the male, 
except in the following characters:—The antenne are a little shorter; the thoracic 
dorsum shows the usual four black stripes before the transverse suture; and the 
abdomen is more flattened and has the black coloration more extended. I have no 
doubt that it belongs to the same species. 
In its general facies and coloration this species bears a striking resemblance to 
Myobia lepida (antead, p. 1385) and Hypostena obumbrata (antea, p. 143). From the 
former it differs by the longer antennz, the broader front in the male, the vibrisse 
inserted just at the oral margin, and the whitish (not ochraceous) head. From 
Hypostena obumbrata it is at once to be distinguished by having no discal macrochete 
on the abdomen. 
26. Anisia macroptera, sp. n., 2. 
Black ; head whitish; thorax grey, without stripes; abdomen with grey front borders to the segments ; legs 
black, the knees and tibie reddish-piceous ; wings broad, with a costal spine. 
Length 3°5 millim. 
Front broader than the eyes ; frontal band black, as broad as the lateral portions ; frontal bristles not descending 
beneath the root of the antenne ; face and cheeks rather broad. Antenne distinctly shorter than the 
