the Two Genera Nusa and Pogonosoma. 209 



legs and black moustache. Third joint of antennae elongated, 

 reddish at apex. 



Length, ^ 21, ? 22 mm. 



Male. — Face covered with ashy-grey tomentum. Mous- 

 tache composed of black bristles and hairs ; a few short 

 white hairs above and two longer yellow ones. Palpi and 

 proboscis with black hairs. Antennce black, the first two 

 joints with many black bristly hairs, the third joint longer 

 than the first^ the basal narrow part black, the apical broad- 

 ened part black at the base only. Ocelligerous tubercle with 

 two very stout black bristles. Hind part of head with two 

 very stout ones and smaller ones on each side. Collar black, 

 covered with yellowish-brown tomentum and with black 

 bristles and hairs. Thorax black, with two well-marked, 

 triangular, yellowish-brown, tomentose spots on the shoulders, 

 which are bordered below with a lighter grey tomentose 

 band, extending along the sides of tliorax ; a very narrow 

 stripe the same colour as the shoulders is visible at the suture 

 proceeding from the sides, distinct in the female, probably 

 denuded in the male. Dorsum of thorax with fine black 

 hairs, longer anteriorly and posteriorly, armed at sides with 

 the usual very stout black bristles. Scutellum the same 

 colour as thorax, with yellow-brown tomentum, and armed 

 on posterior border with a row of very stout black bristles. 

 Abdomen brownish black, with very narrow lighter segmen- 

 tations and black pubescence, bristles at sides yellow with 

 pale hairs. Ovipositor black, shining, short, but swollen 

 with black pubescence. Legs with black pubescence, which 

 is long and soft on the tibise, the femora with fine pale hairs, 

 white and thick on the anterior pair, all bristles black. 

 Underside of the fore and posterior tibiae with a thick short 

 brush of golden-yellow hairs. Wings dusky, the fii'st and 

 fourth cell closed as usual, the veins not so attenuated as in 

 some species ; the veinlet from the dorsal cell is so, and does 

 not reach the border; some pale streaks are visible on the 

 basal part of wings. 



Female identical, but hairs below proboscis white, soft, and 

 long. Palpi with white pubescence. Tbird joint of antenme 

 duskier. Legs more heavily armed with bristles, especially 

 the anterior tibise and tarsi. Abdomen stouter. Ovipositor 

 very short. 



Nusa albibasis, S > sp. n. 



Type (male) from Kaleewa, Chindwin, Upper Burma, 

 May 1893 (Lt.-Col. E. Y, Watson). 



