234 



EXPLANATION OF THE PLATES. 



PLATE II, 



Fig. 



1. Andrena ferox $ . 



2. Andrena ferox § • 



2a. "Wing of Andrena, first type of 



neuration. 

 26. Wing of Andrena, second type 



of neuration. 



3. Wing of Cilissa. 



4. Panurgus calcaratus tf . 

 4a. Wing of Panurgus. 



Fig. 



5. Ccelioxys vectis 2 • 



6. Megachile maritima $ . 



6a. Anterior tarsus of Megachile 

 maritima S • 



7. Anterior tarsus of Megachile 



willughbiella J. 



8. Anterior tarsus of Megachile 



circumcincta rf . 



PLATE III. 



1. Osmia pilicornis $ . 



2. Osmia pilicornis 2 • 



3. 3Ielecta luctuosa 2 • 



4. Apical segment of Megachile 



pyrina tf. 



5. Apical segment of Megachile 



argentata <$ . 



6. Apical segment of Megachile 



centuncularis <$ . 



7. Apical segment of Megachile 



ligniseca $ . 



8. Apical segment of Osmia pili- 



cornis $ . 



9. Apical segment of Osmia auru- 

 lenta <$ . 



10. Profile of the abdomen of 



Osmia spinulosa $ . 



11. Apical segment of Osmia spi- 



mdosa $ . 



12. Wing of Ccelioxys. 



13. Wing of Anthidium. 



14. Wing of Nomada. 



15. Wing of Melecta. 



16. Wing of Stelis. 



17. Wing of Megachile. 



PLATE IV. 



1. Anthidium manicatum tf . 



2. Chelostoma Jlorisomne 2 • 



2a. Mandible of Chelostoma jlori- 

 somne 2 - 



Labrum of Chelostoma Jlori- 

 somne (5 . 



Apical segment of Chelostoma 

 Jlorisomne <$ . 



Profile of the abdomen of Che- 

 lostoma Jlorisomne <$ . 



2b 



2c 



2d. 



3. Stelis octomaculata 2 • 



4. Saropoda bimaculata $ . 



4a. Face of Saropoda bimaculata 



5. Ceratma cyanea. 

 6a. Wing of Ceratma. 



6. Wing of Saropoda. 



7. Wing of Eucera. 



8. Wing of Ammobates. * 



PLATE V. 



1. Epeolus variegatus 2 • 

 2a. Hermaphrodite. — Anthophora 

 acervorum. 



2. Underside of the Hermaphro- 



dite. 



3. Bombus lapponicus 2 • 



* The genus Ammobates is not described in this work ; it is reported to hare 

 been taken in England, but the circumstance requires confirmation. 



