516 Major C. G. Nurse on new 



the base of antennse very concave, the portion midway 

 between base of antennae and anterior ocellus raised, bare, 

 and shining, almost tubercular ; that between the ocelli 

 similar ; mesonotum broad anteriorly, median segment 

 roundly truncate posteriorly, with a semicircular space in the 

 centre above bare, rugose, and defined by a furrow ; apical 

 portion of segment with a median longitudinal furrow ; abdo- 

 men short, not much longer than thorax. Head and thorax 

 black; mandibles, scape and first joint of flagellum of 

 antennse, legs, and abdomen red ; median segment reddish 

 brown ; clypeus and front with thick golden pile ; cheeks and 

 sides of median segment with rather short silvery pubescence, 

 which has in some lights a golden tinge ; abdomen bare ; 

 wings hyaline, with a very faint subapical fuscous cloud 

 across the fore wing, nervures and tegulse light testaceous. 



Long. 7-8 millim. 



Hah. Deesa; rare. 



This species would come into Bingham's key in a new 

 section : " C. Head and thorax black, abdomen red." la 

 appearance it is more like a Tacliytes than a Tachysphex^ 

 and the abdomen being bare makes it look at first sight as it' 

 it belonged to neither genus. 



Tachysphex polluXj sp. n. 



^. Head and abdomen closely punctured; mesonotum, 

 scutellum, and postscutellum more sparsely punctured ; median 

 segment somewhat finely rugose; clypeus bidentate ante- 

 riorly, the space near the ocelli raised and bisected by 

 a longitudinal impressed line ; median segment roundly 

 truncate posteriorly ; abdomen scarcely longer than thorax, 

 the segments constricted at apex. Black, with silvery pile, 

 thickest on the clypeus and front, elsewhere sparse, forming 

 narrow apical bands on abdominal segments ; the anterior 

 tarsi on the underside, and the apical margins of abdominal 

 segments, where denuded of pile, testaceous. The eniar- 

 gination at tlie base of anterior femora, characteristic of the 

 genus, is conspicuous. 



Long. 8 millim. 



Hab. Deesa; a single specimen. 



This species would come into Bingham's key next to 

 T. testaceipes, from which it differs in sculpturing and other 

 respects. 



Tachysphex inventus, sp. n. 



(J . Slenderly built ; head, mesonotum, and scutellum 

 closely but shallowly punctured ; median segment finely 



