PHOROCERA. | 79 
5. Phorocera atriceps, sp. n., ¢ (2%). 
Black, opaque; second and following abdominal segments with cinereous and white reflections and a black 
dorsal stripe; tegule whitish; wings hyaline. 
Length 5:5 millim. 
Allied to the preceding species, but differing in the velvety-black colour of the face and sides of the front ; 
frontal band cinereous, sometimes inconspicuous ; frontal bristles descending to where the facial bristles 
finish. Pilosity of the eyes very conspicuous, yellowish on the upper part, darker below. Antenne as 
in P. parvula ; palpi brownish. Thorax and scutellum black, without any light tomentum. Abdomen 
elongate-ovate ; first segment black, the following segments cinereous, with a black dorsal stripe and 
white reflecting spots on the front borders and black hind margins; the second and third segments have 
laterally some reddish tint; beneath the anus in one of the specimens there are two small appendages, 
which are thickened at the base and recurved towards the venter; discal and marginal macrochete are 
present. Legs black; underside of the femora with many bristles ; on the outside of the middle tibiae a 
long bristle ; on that of the hind tibiz a row of bristles and a longer bristle below the middle ; foot-claws 
and pulvilli short (though the specimens are males). Tegule greyish-white. Wings byaline ; neuration 
as in P. parvula. 
Hab. Mexico, Orizaba (H. H. Smith & F. D. G.), Venta de Zopilote 2800 feet and 
Amula 6000 feet, both in Guerrero (H. H. Smith). | 
Four male specimens (in one of them the abdomen is missing). 
Two examples from Teapa, Tabasco (H. H. Smith), are probably the female of the 
same species; they are a little larger (6 millim.), and agree in the coloration and shape 
of the body &c. with the males from Guerrero and Orizaba; the front is scarcely 
broader, but more of equal breadth ; on the thoracic dorsum, however, there is a cine- 
reous tomentum, in which four black stripes are visible. A similar female specimen, 
from Mexico, is contained in the collection of Prof. Bellardi. 
6. Phorocera rufilabris, sp.n., ¢ ¢. 
Thorax cinereous, with black stripes; head whitish ; abdomen conical, black, with white reflections and with 
discal and marginal macrochetez ; antennez and legs black ; proboscis and palpi rufous. 
Length 10 millim. 
Front of the male slightly prominent, narrower than the eyes, that of the female as broad as the eyes; frontal 
band black; frontal bristles on both sides in a single row, descending to the end of the second antennal 
joint; sides of the front, face, and cheeks white with grey reflections, the face somewhat inclined ; bristles 
of the facial ridges extending to some distance beneath the frontal bristles. Antenne black, in the male 
nearly as long as the face, in the female shorter; second joint short and bristly; third joint four (@ ) or 
six (¢ ) times as long as the second; arista thickened only at the base. Proboscis and palpi yellowish- 
rufous. Thoracic dorsum before the transverse suture with four black stripes, the intermediate stripes 
linear and disappearing behind the suture in a more general black coloration, which, however, does not 
reach either the hind margin or the sides of the thorax; scutellum black, with some grey tomentum. 
Abdomen conical, shining black, with whitish reflections on the front borders of the second and following 
segments ; first segment wholly black, as long as the second; on the second and third segments discal 
and marginal macrochwte are present, the discal macrochetz longer than the marginal; anal segment 
truncate, densely beset with black hairs and macrochate. Legs rather slender and long ; intermediate 
tibiee with one or two long bristles at the middle; hind tibiee outwardly with bristles of unequal length ; 
foot-claws and pulvilli elongate in the male, the pulvilli yellowish. Tegule whitish. Wings greyish- 
hyaline ; small cross-vein under the end of the first vein and before the middle of the discal cell ; apical 
and posterior cross-veins oblique, the apical nearly straight, the posterior slightly curved. 
