Manchester Memoirs, Vol. xlii. (1898), No. 11. 57 



from 6". nodicornis Sm., the only known Indian species of 

 the genus, by the under-noted characters : — 



Scape of the antennae rufous, wings with the apex dis- 

 tinctly smoky ; the basal area of the median segment only 

 impunctate, S. nodicornis. 



Scape of the antennae black ; wings not smoky at the 

 apex ; the base of the median segment impunctate. 



S. fulvipen7iis and S. gracilis. 



Black; the antennae, except at base and apex, the 

 femora, tibiae, and tarsi rufo-testaceous ; wings hyaline, 

 the stigmal region slightly smoky; the stigma testaceous, 

 the nervures at the base pale testaceous, darker towards 

 the apex of the wings. 



$ . The scape of the antennae black, bearing long, 

 white hair; the second joint infuscated; the flagellum 

 almost bare, finely punctured ; the terminal joint black ; 

 the fourth joint is slightly longer than the third. Head 

 black, the front, cheeks, and clypeus densely covered with 

 pale fulvous hair ; the front very closely punctured ; the 

 vertex at the sides of the ocelli with large, clearly separated 

 punctures; the part behind the ocelli closely punctured, 

 the punctures slightly larger and more distinctly separated 

 than those in front of the ocelli, and much smaller than 

 those on the sides. The pro- and meso-notum thickly 

 covered with short, fulvous pubescence, this being also the 

 case with the scutellum and base of post-scutellum ; the 

 latter is minutely and closely punctured. Median seg- 

 ment shining, almost bare ; the base impunctate, the rest 

 with moderately large, distinctly separated punctures; the 

 apex with an indistinct, shallow furrow down the centre. 

 Propleurae impunctate, slightly shagreened; bare; meso- 

 pleurae strongly punctured, densely covered with long, 

 pale hair; the metapleurae sparsely covered with long, pale 

 fulvous hair and strongly punctured. Legs fulvous; the 

 coxae, trochanters, and base of four anterior femora black; 



