PEOTYLOCERA. 63 



pollinose ; lower orbits and edges of buecal 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 ; antennae short, black, with yellow arista ; peristoma narrow, 

 horizontal, not descending; eyes bare, brown, witli the usual rounded 

 pale spots ; hind orbits above with long grey hairs and very short 

 black bristle-like hairs. Thorax black, clothed on the pleurae with 

 long grey hairs and on the back with shorter ones, but on two 

 spots before the suture and on two broader ones behind there are 

 short black hairs. Scutelhmi yellow, darkened above, with black 

 hairs on the middle and pale hairs on the hind margin. Squarnulae 

 whitish yellow, with a white fringe ; halteres whitish ; the subalar 

 callosity yellowish. Abdomen yellow ; first segment blaek ; 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 segments are whitish grey, and on the second and third 

 segments there is in the middle of the hind border a triangular 

 area clothed with black hairs, and a similar one is to be observed 

 on the fourth segment also. Legs dark reddish brown, with white 

 hairs, the hind tibiae 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 tvpical, 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 cesacus, but almost 

 interrupted across the second basal and discal cells ; fifth vein 

 bordered with dark towards the base ; end of the marginal cell 

 infuscated ; basal half of the wings not at all yellow. 



Type $ , a single specimen from British East Africa, Voi, June- 

 July ((?. S. Betton). The species has already been diagnosed by 

 me'in Ann. Mus. Civ. Genova, (3) v. 1912, p. 416 



58. Protylocera haemorrhoa, Gerst acker (1871). 



Easily distinguished by the pale yellow scutellum, reddish end 

 of the black abdomen, and brown median band on the wings 

 extending to the base along the fore border. 



A female specimen from Nyasaland, 5 m. S.-E. of Rifu, 16-17. 

 ix. 1910 (S. A. Neave) ; a male from Beira, Portuguese E. Africa 

 (P. A. Sheppard)\ a female from N.-E. Khodesia, Upper Luano-wa 

 Valley, 1. viii. 1910 (S. A. Neave). 



59. Protylocera nigrita. Bigot (1859). 



Very distinct from any other species, being entirely black, with 

 pale yellow scutellum and squamulae, 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 



