EXPLANATION OF THE PLATES. 



ly; 



PLATE VI. 



Fig. Fig. 



1. Tongue of Rophites 5-spi- 11. Tongue of Ptilothrix plu- 



nosus. mosus. 



2. Maxilla of Rophites 5-spi- 12. Maxilla of Ptilothrix plu- 



nosus. mosus. 



3. Wing of Rophites 5-spino- 13. Labrum of Ptilothrix plu- 



sus. mosus. 



4. Tongue of Anthocopa pa- 14. Wing of Ptilothrix plu- 



paveris. mosus. 



5. Maxilla oi Anthocopa pa- 15. Maxillary palpus of hi- 



paveris. 



6. Wing of Anthocopa papa- 



veris. 



7. Tongue of Systropha spi- 



ralis. 



8. Maxilla of Systropha spi- 



ralis. 



thurgus cornutus. 



16. Labial palpus of Lithurgus 



cornutus. 



17. Tongue of Megachile ma- 



ritima. 



18. Maxilla of Megachile ma- 



ritima. 



9. Antennse of male of Sy- 19. Wing of Megachile mari- 



stropha spiralis. tima. 



1 . Win g of Sy strop haspira lis. 



