80 DIPTERA. 
Hab. Mexico, Omilteme 8000 feet and Sierra de las Aguas Escondidas 9500 feet, 
both in Guerrero (H. H. Smith). 
A male specimen from the latter, a female from the former locality. 
Owing to the elongate and slender shape of the body and legs, this species has an 
aspect differing from that of most of its congeners. 
7. Phorocera xanthura, sp. n., ¢. 
Cinereous ; head and anal segment ochraceous; frontal band, four distinct thoracic stripes, reflections on the 
abdomen, antenne, and palpi black. 
Length 9 millim. 
‘Head ochraceous; front broader than the eyes; frontal band black, sharply limited, narrower than the lateral 
portions; frontal bristles descending beneath the end of the second antennal joint ; facial bristles stout, but 
not numerous, mounting to where the frontal bristles finish. Antenne shorter than the face ; second joint 
short, bristly ; third joint four or five times as long as the second ; arista thickened in its proximal half. 
Proboscis and palpi black, the terminal lips of the former somewhat rufous. Thorax cinereous, with four 
distinct, equally broad, black stripes, which are united two and two behind the transverse suture ; scutellum 
cinereous, blackish at the base. Abdomen ovate, convex; first segment black, the following segments 
cinereous with blackish or brown reflecting spots and sometimes a black dorsal stripe; anal segment 
bright ochraceous ; second segment with marginal, third and anal segments with discal and marginal, 
macrochete#. Middle tibiz with some long bristles; hind tibize outwardly with nearly fringe-like bristles 
mixed with some longer ones. Tegule whitish. Wings greyish-hyaline; small cross-vein on the middle 
of the discal cell; apical cross-vein concave ; posterior cross-vein nearly straight. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (H. H. Smith). 
A single female specimen. 
8. Phorocera fulviceps, sp. n.,¢ 2. 
Blackish, with cinereous tomentum ; thoracic dorsum with four black stripes; abdomen with black reflecting 
spots, and with discal and marginal macrochete ; palpi rufous. 
Length 6—9°5 millim. 
Front in the male narrowed behind, and scarcely as broad as the eyes, in the female broader; frontal band 
black; frontal bristles descending on both sides in a curved row to the number of four or five beneath 
the root of the antenne; external to the frontal bristles are some weak hairs; facial bristles reaching to 
the point where the frontal bristles finish. Eyes not descending beneath the vibrisse, densely beset with 
yellowish pile. Antenne shorter than the face; second joint bristly; third joint narrow, truncate at the 
tip, four times as long as the second ; arista thickened on its proximal third. Proboscis dark brown, the 
terminal lips with yellow hairs; palpi rufous. On the shoulders the cinereous tomentum has sometimes 
a yellowish tint ; the black stripes on the thoracic dorsum are very distinct in the more greyish specimens ; 
the scutellum, if not covered by the tomentum, appears somewhat testaceous, and usually has a blackish 
base. The black reflecting spots of the abdomen are for the greater part on the hind margins of the 
segments; in the more obscure specimens the abdomen is black with greyish or whitish reflections; the 
anal segment is always black in the middle and on the anus. Legs black; middle tibia outwardly with 
a long bristle ; hind tibiee outwardly with a row of short bristles, and a longer median bristle; foot-claws 
and pulvilli elongate in the male, the pulvilli yellowish. Tegule whitish. Wings greyish-hyaline; small 
cross-vein under the middle of the mediastinal cell and before the middle of the discal cell ; apical cross- 
vein nearly straight; posterior cross-vein curved. 
Hab. Mexico (coll. Bellardi), Xucumanatlan 7000 feet, Omilteme 8000 feet, and 
Sierra de las Aguas Escondidas 9500 feet, all in Guerrero (H. H. Smith), Orizaba 
(H. H. Smith & F. D. G.). 
