NEMORAA. 49 
(but much less than in the following species, NV. forreri, N. smithi, &c.); beard yellowish, the pilosity of 
the eyes and that of the occiput of the same colour. Antenne not quite reaching the inferior border 
of the eyes, black; second joint sometimes slightly rufous at the tip, on its upper part with some bristles ; 
third joint twice as long as, and scarcely broader than the second, rounded at the end; arista thickened 
on the proximal half. Proboscis black ; palpi rufous, thickened towards the tip. Thorax and scutellum 
black; the thoracic dorsum before the transverse suture and immediately behind it with some grey 
tomentum and five black stripes, of which the three median are narrower and closer to each other. 
Abdomen ovate, shining black, with a slight bluish tint, densely beset (like the thorax and the scutellum) 
with black hairs; there are macrochete on the hind margins of the second and third segments and others 
more irregularly placed on the anal segment. Legs black, with many bristles; middle tibie outwardly 
with some very long bristles; hind tibia: outwardly nearly fringe-like with shorter bristles, in the middle 
of which a longer one appears ; foot-claws black, the pulvilli yellowish, elongate in the male (I am not 
certain whether the front tarsi of the female are dilated or not, the single specimen received of that sex 
having lost both the front legs). Tegule blackish, with a yellowish margin. Wings greyish-hyaline; small 
cross-vein oblique, on the middle of the discal cell ; curvation of the fourth vein with a right angle ; apical 
and posterior cross-veins slightly curved. 
Hab. Mexico, Amula 6000 feet and Xucumanatlan 7000 feet, both in Guerrero 
(H. H. Smith). 
Three males and one female. 
8. Nemorza forreri, sp.n.,.g 9. (Tab. II. figg. 21; 21a, head in profile.) 
Head whitish ; thorax and scutellum yellowish-cinereous; abdomen shining black, the anal segment in the 
male usually with pale yellow or whitish reflections ; legs black, the front tarsi not dilated in the female ; 
antenne and palpi rufous; base of the wings infuscated. 
Length 10-12 millim. 
Head yellowish-white; cheeks broad, with a rather insignificant yellowish pile; oral margin a little prominent ; 
vibrissee at some distance above the oral margin, accompanied by some shorter bristles; beard and pilosity 
of the occiput pale yellow. Front in the male narrowed behind; in both sexes with cinereous reflections, 
and a piceous, sometimes indistinct, median band; frontal bristles deseending in a single curved row 
beneath the root of the antenns, and external to this row in the female a row of four bristles. Eyes 
distinctly pilose. Antenne rufous; third joint with a more or less black or piceous extension, especially 
in the male; second joint elongate, bristly on the upper part; third joint scarcely longer, convex on the 
front side; arista black, thickened to beyond the middle; the articulation on the base rather conspicuous. 
Proboscis shining black; palpi rufous, with short black bristles below and at the end. Thorax and 
scutellum densely clothed with yellowish-cinereous tomentum; thoracic dorsum with four dark lines ; 
macrochete of the hind margin of the scutellum long and stout. Abdomen broadly ovate, shining black, 
on the upper part usually with a bluish, on the sides and near the extremity with a reddish tinge, in 
the male on both sides of the fourth segment with a pale yellow or whitish reflecting spot; macrochete 
in the middle and at the hind margins of the segments, on the fourth segment on the entire surface. 
Legs black; front femora outwardly with grey tomentum; bristles abundant, those of the middle 
tibie long and robust: pulvilli and foot-claws yellow, the claws with black tips—in the male they are 
longer and surrounded by long hairs. Tegule yellowish. Wings with a grey tinge, infuscated at the 
base, the dark colour covering the first basal cell; small cross-vein placed on the middle of the discal 
cell; apical and posterior cross-veins oblique and curved. 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer), Xucumanatlan 7000 feet and 
Omilteme 8000 feet, both in Guerrero (H. H. Smith), Navarrete in Tepic and Atoyac 
in Vera Cruz (Schumann), 
Several specimens of both sexes. In coloration and even in general facies this 
BIOL. CENTR.-AMER., Dipt., Vol. II., Janwary 1890. h 
