112 Mr. Cameron on 



having the j-ellow tint very feebly developed. The tegular 

 are for the greater part black. 



I have seen four females in the Calcutta Museum col- 

 lection. 



Sphex rufipennis, Fab. 



This species appears to be a common one in India. 

 The colour of the wings varies, the base, especially in the 

 form diabolicus. Smith, being more or less blackish, and 

 the yellow tint is something suffused with fuscous. 



S. rufipennis has been recorded from South America, 

 but inasmuch as the $ genitalia differs considerably 

 from that of the Indian form, it is probable that the 

 American form, notwithstanding its almost identity in 

 coloration, size, &c., really represents a different species, 

 which I have provisionally named *S. erytJiroptera (Biol. 

 Cent. Am. Hynn. II., p. 30). The form of the scutellum 

 varies in being more or less deeply furrowed. The S. 

 rnfipennis. Kohl (Ternies. Fnrjetek, IX., p. 198), is, as I am 

 informed by Kohl, a different species from rufipennis. Fab. 

 — Inteipennis, Mocsary, the latter differing from nifipennis, 

 Kohl in having the post scutellum bituberculate, the 

 antennae thinner, and the wings black at the base. 



Sphex argentata. 



This large species is common all over the Oriental 



region, extending also into the Australian Islands of the 



Malay Archipelago. It is stated by Wallace (Jour. Linn. 



Soc, XI., p. 296) to be common in the sandy streets of 



Dobbo, in the Aru Islands, and also at flowering shrubs in 



Celebes, 



Sphex Rothnevi, sp. nov. 



Nigra; capite et thorace dense et longe argenteo pilosis; 

 abdoniine pedibusqite riifis ; coxis, trocJiantcribus basique 

 femorum, rnfis ; alis Iiyalinis, apice fumatis ; clypeo inciso. 

 Long. 22 — 24 mm. 



