212 HYMENOPTERA. 



9. Larger; head and mesothorax greenish subsericea Ckll. 



Smaller; head and mesothorax black regime Ckll. 



10. Abdomen brilliant peacock-green ; large species. 



pavonura Ckll. 

 Abdomen not thus colored 11. 



11. Occiput conspicuously covered with yellowish-white hair, so that 



at a glance the upper border of the prothorax seems to be 

 light yellow as in some Prosopis ; abdomen green and red. 



Victoria? Ckll. 

 Occiput not thus ornamented 12. 



12. Abdomen red (sometimes clouded with dark in salaris) 13. 



Abdomen not red 15. 



13. Mesothorax very little punctured ; base of abdomen dark purplish. 



subfusa Ckll. 

 Mesothorax well punctured 14 . 



14. Smaller; basitarsi clear red myrtacearum Ckll. 



Larger; basitarsi not red salaris Ckll. 



15. Flagellum dark, at most slightly reddish beneath. 



subsericea Ckll. 

 Flagellum bright ferruginous benoth 16. 



16. Large and robust ; wings reddish ; stigma and nervures ferru- 



ginous schomburgki Ckll. 



Smaller, face rather narrow; stigma dark jueunda Smith. 



Megachile sculpturalis Smith. 



A female from Chusan Island {Walker) , in the British 

 Museum, appears to represent a slight variety of this species, 

 having the apical part of the ventral scopa nearly a pure 

 black. I believe that M. montonii Gribodo is a synonym of 

 this species ; it is at least extremely closely allied. 



The following table will be useful for the separation of 

 female Megachile from China, Corea and Mongolia, but the 

 recorded species must represent only a small fraction of 

 those existing : 



Ventral scopa white; legs red ehilieiisis Rad. 



Ventral scopa red or fulvous 1. 



Ventral scopa dark brown, with black hairs ; mandibles not dentate. 



koreensis Rad. 



Ventral scopa black; length 26-27 mm 2. 



Ventral scopa bicolored 3. 



1. First three abdominal segments dusky ocher-yellow haired; length 

 12 mm moiigolica Mor. 



Metathorax and first abdominal segment white-haired ; length 16 

 mm relata Smith. 



