PROTYLOCERA. 63 
pollinose ; lower orbits and edges of buceal cavity reddish; frons 
clothed with hairs, which on the basal half are erect, shorter, and 
more white, and on the front half are longer, grey, and directed 
forwards; face with grey hairs on the sides; antennal tubercle promi- 
nent; antenne aoe black, with yellow arista; peristoma narrow, 
horizontal, not desce nding: eyes bare, brown, w i the usual rounded 
pale spots; hind orbits ‘above with long grey hairs and very short 
black bristle-like hairs. Thorax black, clothed on the pleura with 
long grey hairs and on the back w ith shorter ones, but on two 
spots ‘before the suture and on two broader ones behind there are 
short black hairs. Scutellum yellow, darkened above, with black 
hairs on the middle and pale hairs on the hind margin. Squamule 
whitish yellow, with a white fringe; halteres w hitish - the subalar 
eallosity: yellowish. Abdomen yellow ; first segment “siete ; second 
with a narrow black basal band, which in the middle is dilated into 
a triangle; hairs golden and short, those on the base of the first 
and second se ements are whitish grey, and on the second and third 
segments there isin the middle of the hind border a triangular 
area clothed with black hairs, and a similar one is to be pieced 
on the fourth segment also. Legs dark reddish brown, with white 
hairs, the hind Aalaes with a black fringe on the inner side; hind 
femora rather thick, with the two usual subapical callosities beneath 
and with a black spot externally at the base. Wings typical, with 
very shortly stalked marginal cell and with a triangular appendi- 
culated kink in the third vein; they are greyish hyaline, with a 
broad brown median spot very like that ‘of esacus, but almost 
interrupted across the second basal and discal pelle: fifth vein 
bordered with dark towards the base; end of the marginal cell 
infuseated ; basal half of the wings not at all yellow. 
Type 2, a single specimen aes British East Africa, V o1, June— 
July (C8: Betton). The species has already been diagnosed by 
me in Ann. Mus. Civ. Genova, (3) v. 1912, p. 416. 
58. Protylocera hemorrhoa, Gerstdchker (1871). 
Easily distinguished by the pale yellow scutellum, reddish end 
of the black ndonem and brown median band on the wings 
extending to the base along the fore border. 
A female specimen from Nyasaland, 5 m. 8.-E. of Rifu, 16-17. 
ix. 1910 (S. A. Neave); a male from Beira, Portuguese KE. Africa 
( P. A. Sheppard); a female from N.-E. Rhodesia, Upper Luangwa 
Valley, 1. viii. 1910 GS. A. Neave). 
59. Protylocera nigrita, Bigot (1859). 
Very distinct from any other species, being entirely black, with 
pale yellow scutellum and squamule, and with yellowish wings 
without any brown marking. 
In this species the marginal cell has a longer stalk than in the 
typical species, and therefore the subcostal cell is a little longer 
