244 



EXPLANATION OF THE PLATES. 



PLATE I. 



Fig. 



1 . Prosopis cornuta $ . 



la. Antenna of Prosopis cor- 

 nuta $ . 



16. Intermediate leg of Pro- 

 sopis cornuta 3 . 



Ic. Wing of Prosopis. 



\d. Head of Prosopis dila~ 

 tata $ . 



2. Sphecodes fuscipennis J . 



Fig. 



3. Halictus sexnotatus . 

 3a. Labrum of Halictus $ . 

 3b. Labrum of Halictus ? . 

 3c. Wing of Halictus. 



4. Macropis labiata 5 . 



5. Nomada armata $ . 



6. Dasypoda hirtipes $ . 

 6a. Wing of Dasypoda* 



PLATE II. 



1. Andrena ferox $ . 



2. Andrena ferox J . 



2a. Wing of Andrena, first 

 type of neuration. 



2b. Wing of Andrena, second 

 type of neuration. 



3. Wing of Cilissa. 



4. Panurgus calcaratus 3 

 4 a. Wing of Panurgus. 



5. Cwlioxys Vectis 5 * 



6. Megachile maritima <$ . 

 60. Anterior tarsus of Mega- 



chile maritima $ . 



7. Anterior tarsus of Mega- 



chile Willughbiella 3 . 



8. Anterior tarsus of Mega- 



chile circumcincta <$ . 



PLATE III. 



1 . Osmia pilicornis <? . 



2. Osmia pilicornis 5 



3. Melecta luctuosa ? . 



4. Apical segment of Mega- 



chile pyrina $ . 



5. Apical segment of Mega- 



chile argentata $ . 



6. Apical segment of Mega- 



chile centuncularis $ . 



7. Apical segment of Mega- 



chile ligniseca <$ . 



8. Apical segment of Osmia 



pilicornis $ . 



9. Apical segment of Osmia 

 aurulenta $ . 



10. Profile of the abdomen of 



Osmia spinulosa <? . 



11. Apical segment of Osmia 



spinulosa $ . 



12. Wing of Coelioxys. 



13. Wing of Anthidium. 



14. Wing of Nomada. 



15. Wing of Melecta. 



16. Wing of Stelis. 



17. Wing of Megachile. 



