PHOROCERA. 77 
17. Abdomen shining black, the second and third segments with 
white front borders. . . . 0. 0. + ee ee + + + omacra, v. d. Wulp. 
Abdomen cinereous, with blackish reflecting spots or black 
hind borders to the segments . . . ..-.-. +--+ 1. 
18. Fourth vein prolonged behind the curvation . . . +. + - appendiculata, v. d. Wulp. 
Fourth vein not prolonged behind the curvation . . . . - 19 
19. Scutellum testaceous; abdomen conical. . . . . . + + scutellaris, v. d. Wulp. 
Scutellum greyish; abdomen ovate . . . - »- + + + > linearis, v.d. Wulp. 
1. Phorocera tenebricosa, sp. n., 3 2. 
Black; face and cheeks whitish ; thoracic dorsum anteriorly greyish with black lines; abdomen with discal 
and marginal macrochete ; tegule and base of the wings brown; palpi rufous. 
Length 8°5-11 millim. 
Face and cheeks white, with a cinereous reflection; the cheeks broad and with several weak hairs beneath 
the frontal bristles; beard whitish ; front broader than the eyes in both sexes, blackish-grey ; frontal 
band brown; frontal bristles on each side in a double row. Antenna black; third joint four times as 
long as the second; arista thickened to beyond the middle, and its penultimate joint somewhat distinct. 
Palpi rufous, at least at the tip. Thoracic dorsum before the transverse suture with some grey tomentum 
and four black lines, of which the median two are the most conspicuous ; scutellum piceous. Abdomen 
ovate, convex, unicolorous black, densely haired and with discal and marginal macrochete. Legs black ; 
front femora with a row of bristles on the upperside and another on the underside; posterior femora 
with long bristles on the underside; front tibie outwardly with short bristles ; middle tibia outwardly 
with three or four and inwardly with two long bristles ; hind tibia outwardly fringed, and with a longer 
bristle below the middle; foot-claws and pulvilli elongate in the male, the pulvilli yellow. Tegule and 
base of the wings dark brown, the rest of the wings greyish ; small cross-vein before the middle of the 
discal cell; apical cross-vein concave at the base; posterior cross-vein curved. 
Hab. Mexico, Amula 6000 feet, Omilteme 8000 feet, and Sierra de las Aguas 
Escondidas 9500 feet, all in Guerrero (H. H. Smith), Tuxpango (coll. Bellardi). 
‘Two male and two female specimens were collected by Mr. Smith; both sexes are 
also represented in the collection of Prof. Bellardi. 
9. Phorocera nigrita, sp.n. 2. (Tab. IIT. fig. 11.) 
Black ; face and abdomen with whitish reflections; the abdominal segments with discal and marginal macro- 
chaste ; tegule and base of the wings brown ; palpi black. 
Length 8-5-9°5 millim. 
Deep black, except a white reflection on the face and whitish reflecting spots on the abdomen, which are only 
perceptible in certain lights. Front above the antenne as broad as the diameter of the eyes, narrower 
behind ; frontal bristles descending in a single row to the number of three or four beneath the root of 
the antennw; face perpendicular; oral margin not prominent ; the bristles of the facial ridges reaching to 
the end of the frontal bristles; beard black. Eyes with a dense yellowish pile. Antenne black, 
shorter than the face ; second joint somewhat porrected and very bristly ; third joint three or four times 
as long as the second; arista thickened in its proximal third. Palpi black. Thorax black, opaque, 
without any markings; scutellum faintly shining, stained with brownish, especially on the hind 
margin. Abdomen ovate; the whitish spots appear usually on the second and third segments ; in some 
specimens the second segment shows laterally a reddish tint ; discal and marginal macrochete are present, 
put not very conspicuous, owing to the long and dense pile which covers the abdomen. Legs black; the 
bristles as in the preceding species, except that the middle tibia have but two long and stout bristles, one 
on the outside, the other, somewhat lower down, on the inner side ; foot-claws and pulvilli short, the pulvilli 
yellowish. Tegule and base of the wings brown, the rest of the wings greyish ; small cross-vein before 
