574 JOURNA L, BOMB A Y NA TURA L HISTORY SOCIETY, Vol. XV. 



pubescence, along the apical margins of segments 1 — 5 ; pubescence on 

 the inside of posterior tarsi and scopa fulvous ; wings hyaline, nervures 

 black, tegulse dark testaceous ; 2nd cubital cell considerably larger than 

 the 1st. 



$ Similar, smaller ; clypeus transverse at apex, not porrect ; antennae 

 reaching beyond the scutellum ; apical abdominal segments not dentate. 



Long. 9 12-13 mm. $ 8-10 mm. 



Habitat — Quetta ; fairly common in March. 



I bred both sexes from a mud nest similar to that made by Eitmenes, 

 which I procured from a rafter in the roof of a stable. 



This species belongs to the subgenus Ceratosmia (Thorns.). 



Osmia sita, n. sp. 



9 Head and thorax closely punctured, granular, abdomen shining, 

 more finely punctured, the punctures being closest along the margins 

 of the segments ; head large, the cheeks wider than the eyes; mandi- 

 bles large, tridentate ; clypeus rounded at apex, not serrate ; abdomen 

 very convex, slightly longer than thorax. Black, the pubescence 

 greyish white, moderately thick ; abdomen with lateral patches of white 

 pubescence on apical margins of segments 1 — 5 ; scopa white, long and 

 thick ; tarsal claws rufous, calcaria black ; pubescence on inside of 

 posterior tarsi fuscous ; wings hyaline, the radial cell and outer margin 

 fuscescent, nervures and tegulse black. 



$ Smaller, pubescence longer and thicker, but the lateral marks on 

 apical margins of abdominal segments less well defined ; segments 3 — 5 

 ciliated with greyish hairs ; apical abdominal segment serrate, omar- 

 ginate at apex, with a blunt tooth on either side ; wings subhyaline. 



Long. 9 10 mm. $ 8 mm. 



Habitat — Qnerta ; not uncommon in May. 



Quite distinct from any other Indian species. Belongs to the sub- 

 genus Acanthosmia (Thorns.). 



Megachile. 



I obtained in Baluchistan specimens of the following species of this 



genus : — 



M. asiatica (Mor.) ; cemmon. 



M. apicalis (Spin.). 



M. rotundata (Fabr.). 



M. desertorum (Mor.) ; one specimen from Peshin. 



M. muraria (Retz.) ; fairly common. 



