SARCOPHAGA. 277 
16. Sarcophaga trivialis, sp.n., 3 ¢. 
Cinereous ; head ochraceous; three thoracic stripes, reflecting spots on the abdomen, antenne, palpi, and legs 
black ; third abdominal segment on each side with two lateral macrochete; hypopygium red; third 
vein bristly. 
Length 5-8:5 millim. 
Head ochraceous, with reddish or brown reflections; front flattened, slightly prominent, as long as the face, 
on the vertex in the ¢ half as broad, in the ? as broad, as the eyes; frontal band blackish, as broad as 
the lateral portions; lower part of the cheeks equalling one-third to one-fourth of the longitudinal 
diameter of the eyes. Antenne black, inserted nearly on the median line of the eyes; third joint three 
times as long as the second ; arista plumose from the base to two-thirds of its length. Proboscis and 
palpi black, the palpi slightly thickened towards the tip. Thorax and scutellum cinereous, often with a 
yellowish tinge; thorax with three black stripes, the median stripe prolonged over the scutellum and, on 
each side, before the transverse suture, with a more or less conspicuous narrow brown line; dorso-central 
bristles distinct. Abdomen elliptical ( ¢) or ovate (); its ground-colour cinereous, but often becoming 
more or less ochraceous towards the apex; the brown or black reflecting spots sometimes appearing in 
three rows, but usually more irregular; hind border of the third segment with two dorsal and on each 
side two lateral macrochete; hind border of the anal segment with a continuous row of macrochete ; 
hypopygium of the § yellowish-red, prominent; anus of the 9 likewise reddish ; in some specimens 
(d 2) the anal segment is ochraceous and the reflecting spots on it are reddish. Legs black, the hind 
tibise sometimes piceous ; the latter in some specimens very slightly curved, in others straight, and. with 
scattered bristles on their outer side; foot-claws and pulvilli somewhat elongate in the ¢. Tegule 
white, usually with a yellowish tinge. Wings greyish-hyaline; third vein with short bristles; small 
cross-vein under the end of the first vein and on the middle of the discal cell ; curvature of the fourth 
vein nearly rectangular, in some specimens with a rather more acute angle; apical cross-vein concave ; 
posterior cross-vein slightly undulate. 
Hab. Mexico, Tierra Colorada 2000 feet, Amula 6000 feet, and Xucumanatlan 
7000 feet, all in Guerrero, Cuernavaca in Morelos, Atoyac in Vera Cruz, Teapa in 
Tabasco (H. H. Smith), Orizaba (H. H. Smith and F. D. Godman). 
Several specimens of both sexes. ‘They differ greatly in size and in the intensity of 
the ochraceous colour on the head and abdomen. In some of them, especially the 
males, the hind tibie are slightly, but conspicuously, curved ; but all these differences 
show transitions, proving that the species is a variable one. 
S. trivialis is allied to S. turbata, but differs from it in the position of the macro- 
cheete of the third abdominal segment, the two lateral ones being placed close together 
and widely removed from the two dorsal, while in S. turdata the four lateral macro- 
cheetee are at some distance from each other, and form with the two dorsal a nearly 
complete row. 
17. Sarcophaga uncata, sp. n., ¢. 
Cinereous ; frontal band, thoracic stripes, reflecting spots (in three rows) on the abdomen, antenne, palpi, and 
legs black ; hypopygium red ; vertex less than half the breadth of the eyes; third vein bristly. 
Length 6-8 millim. 
Head whitish-cinereous ; front on the vertex less than half the breadth of the eyes; frontal band black; lower 
part of the cheeks equalling one-third of the longitudinal diameter of the eyes. Antenne black, inserted 
a little above the median line of the eyes; third joint twice as long as the second, at the extreme base 
rufous. Proboscis black, with brown terminal lips; palpi black, cylindrical, short-haired. Thorax, 
scutellum, and abdomen cinereous; the two lateral stripes of the thorax broad, the median stripe 
