195 



EXPLANATION OF THE PLATES. 



PLATE I. 



The letters indicate the same parts m all the figures ; they are 

 as follows : a. the mentum ; b. the labium ; c. the labial palpi ; 

 d. the paraglossae ; e. the maxilla ; /. the lobe of the maxilla ; 

 g. the maxillary palpi. 



Fig. 



1. Tongue of Colletes. 



2. Maxilla of Colletes. 



3. Wing of Colletes. 



4. Tongue of Paracolletes. 



5. Maxilla of Paracolletes. 



6. Wing of Paracolletes. 



7. Tongue of Ptiloglossa. 



8. Maxilla of Ptiloglossa. 



9. Wing of Ptiloglossa. 



10. Labrum of Ptiloglossa. 



1 1 . Tongue of Lamprocolletes. 



12. Posterior tibia of Lampro- 



colletes. 



13. Maxilla of Lamprocolletes. 



Fig. 



14. Apical segment of abdo- 



men of Lamprocolletes. 



15. Spines -or calcariae of tibia- 



of Lamprocolletes. 



16. Tongue of Leioproctus. 



17. Maxilla of Leioproctus. 



18. Wing of Leioproctus. 



19. Tongue of Dasycolletes. 



20. Maxilla of Dasycolletes. 



21 . Wing of Prosopis. Divi- 



sion 1. 



22. WingofProsopw. Div.2. 

 23. 



PLATE II. 



1. Tongue of Euryglossa. 11. 



2. Maxilla of Euryglossa. 12. 



3. Labrum of Euryglossa. 13. 



4. Wing of Euryglossa, 14. 



5. Tongue of Hyleoides. 15. 



6. Maxilla of Hyleoides. 16. 



7. Anterior leg of Hy leoides. 17. 



8. Wing of Hyleoides. 18. 



9. Tongue of Meroglossa. 19. 

 10. Maxilla of Meroglossa. 20. 



Antenna of Meroglossa. 

 Wing of Meroglossa. 

 Maxilla of Halictus. 

 Tongue of Halictus. 

 Wing of Halictus. 

 Labrum of $ of Halictus. 

 Labrum of ? of Halictus. 

 Tongue of Temnosoma. 

 Maxilla of Temnosoma. 

 Wing of Temnosoma , 



K2 



