oU JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XIX. 



Length. — lo-li mm. 



Xear to T. ricinns (Cam.), but may be distinguished by the distance apart oi 

 eyes at vertex being less than the length of 2nd joint of flagellum, whereas in 

 vicinus it is nearly the length of 2nd and 3rd antennal joints united. 



Tachysphex. 



The species of this genus are, like those of the last, closely allied and 

 (litiicult: to separate. I have a number of specimens from Quetta still awaiting 

 determination. 



Tachysphex instructus, u. nom. 



Cameron has described two species under the names of stiiolala and striul- 

 atus respectively (Tr. Ent. Soc, 1903, p. 12'i, and J., Bom. Xat. Hist. Soc, Vol. 

 XVIII, p. 305). For the latter I propose the name T. instructus to prevent 

 confusion. 



Tachijsphcx erylhrogaster (Cam.). 

 . The ^ is generally similar to the $ . but the 2nd cubital cell is narrower 

 above, and the eyes are closer at vertex, being not further apart than the 

 length of 2nd and 3rd joints of the flagellum united ; the pygidium is deeply 

 and roundly incised at apex ; the emargination at the base of anterior femora 

 is wide but not deep. 



Length. — 8-12 mm. 



Tacliyspliex selecius, n. sp, 



^. Head minutely and closely punctured : mesonotum, scutellum, and post- 

 scutellum less closely but more strongly punctured, median segment rather 

 finely reticulate, abdomen minutely aciculate. Clypeus rounded anteriorly, 

 front with an impressed line ; the distance apart of the eyes at vertex is about 

 equal to the 2nd joint of flagellum, which is slightly shorter than the 3rd joint : 

 anterior femora with a wide but shallow emargination at base ; median segment 

 of the same length as the mesonotum, roundly truncate at apex ; abdomen with 

 the apices of the segments depressed ; pygidium roundly and widely incised. 

 Black ; all the tibia) and tarsi dark red ; pubescence sparse, greyish ; pile on 

 clypeus and front bright golden, on the legs and the apical margins of abdomi- 

 nal segments silvery ; wings hyaline, nervures and stigma piceous, inclining to 

 testaceous about the base of the wings ; tegula) rufo-testaceous ; 2nd and ord 

 cubital cells subequal on radial nervure, 1st rather longer ; 1st recurrent nervurc 

 received into 2nd cubital cell before the middle, 2nd at the middle. 

 Hab. — Bombay : October. 

 Length — 8 mm. 



Nearest to T. (estacelpcs (Bing.j. but may be at once distinguished by the 

 golden pile on clypeus and front. 

 Tacliyspliex peculator, n. sp. 



^. Head, mesonotum, scutellum, and postscutellum very closely and finely 

 punctured, the mesonotum almost granular ; median segment very finely 

 rugose, abdomen minutely aciculate. Front with a shallow furrow : distance 

 of eyes apart at vertex about equal to the 2nd joint of flagellum ; anterior 



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