PHOROCERA. 81 
_ Several examples of both sexes. A female specimen, from Mexico, is also contained 
in the collection of Prof. Bellardi. 
This species has the general facies of the preceding, but differs in the rufous palpi 
and in the anal segment being blackish in the middle and only laterally cinereous or 
yellowish. It varies in its coloration: in the darkest specimens the black colour 
prevails, in others the cinereous tomentum is more extended; the head is sometimes 
more or less fulvous (hence the name), but the median part of the face is usually 
whitish. 
9. Phorocera nigrifrons, sp. n., 2. 
Black; face, cheeks, and reflections on the thorax and on the abdomen whitish; scutellum testaceous ; palpi 
rufous, 
Length 5°5 millim. 
Front slightly prominent, as broad as the eyes, blackish, anteriorly whitish; frontal band black; frontal 
bristles descending to the end of the second antennal joint; external to the frontal bristles are some 
weak hairs; face and cheeks whitish; facial bristles mounting to where the frontal bristles finish. Eyes 
descending to the vibrisse, clothed with yellowish pile. Antenne black, a little shorter than the face; 
second joint short, bristly ; third joint four times as long as the second; arista thickened on its proximal 
third. Proboscis black; palpi exserted, cylindrical, palerufous. Thorax shining black ; the white reflec- 
tions form laterally a band from the shoulders to the root of the wings, and occupy the portion before the 
transverse suture, but interrupted there by four black stripes; scutellum testaceous. Abdomen ovate, 
convex, shining black, with white reflecting spots laterally on the second and following segments, and 
with long discal and marginal macrochete. Legs black; middle tibis with some long bristles; hind 
tibia outwardly with bristles of unequal length. Tegule white. Wings brownish-grey, more obscure on 
the base and along the costa; small cross-vein a little before the middle of the discal cell; apical cross- 
vein concave near the base; posterior cross-vein slightly curved. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
A single female specimen. 
10. Phorocera cinerea, sp. n., 2. 
Cinereous; four stripes on the thorax, hind borders of the abdominal segments, ventral face, third antennal 
joint, and legs black; palpi and basal joints of the antenne rufous ; hind tibie with long bristles. 
Length 9 millim. , 
Front yellowish-cinereous, broader than the eyes ; frontal band brown, narrower than the lateral portions ; frontal 
bristles stout, descending in a curved row to beneath the second antennal joint, the lowest of these bristles 
close to the eyes. Face and cheeks white, the cheeks broad; eyes not descending to the vibrisse ; the 
pilosity of the eyes only conspicuous when viewed under the lens; facial bristles not fully reaching the 
frontal ones; beard white. Antenne shorter than the face; basal joint short, somewhat rufous; third 
joint brownish-black, four times as long as the second; arista thickened to beyond the middle. Proboscis 
black ; palpi cylindrical, rufous, with black hairs near the tip. Thorax cinereous, with four black stripes 
(the median stripes linear), which behind the transverse suture disappear in a more general blackish 
coloration ; black reflections are also on the pleure; scutellum cinereous, flattened. Abdomen ovate; 
first segment black, the following segments with black hind borders; on the second and third segments 
are traces of a black dorsal stripe; besides the marginal macrochete, there are two discal ones on the 
third segment ; anal segment densely beset with black hairs and macrochete. Middle tibie with some 
long bristles; hind tibie with bristles of unequal length, some of them nearly as long as those of the 
middle tibie. Tegule white. Wings hyaline; small cross-vein on or just before the middle of the 
BIOL. CENTR.-AMER., Dipt., Vol. II., February 1890. m 
