﻿ILLUSTRATIONS. 



PLATES. 



1. Ears of Mijotis veVifer, M. caTifornicus, 1[. yumaue7if>is, IT. fhiisanodes, 21. evotis 



Xycticeius luoneraJis, Ehogel'ssa gracilis, JR. tumida, Corynorliinus macrotis town 

 sendii, Euderma maculatum, Jntrozous paUidiis. 

 Uropatagia of Eliogeessa fjracilis, I\. tumida, XycticeiHS liumeraUs. 



2. Uropatagia of ATyot is caJifornicns, 21. yumanensis, IT. evotis, M, thysanodes, M. velifer 



3. Wings of Plecotus, Corynorliinus, Euderma, and Lasiurus. 



TEXT FIGURES. 



1. Wings of Vespertilio serotinus. 



2. Anterior part of rostrum of species of PhyUostomatidce and Vespertilionidce. 



3. Muzzle of Antrozous. 



4. Abnormal front teetli of Antrozous. 



5. Skulls of Antrozous. 



6. Teeth of Antrozous. 



7. Muzzles of Plecotus and Corynorhinus. 



8. Skulls of two subspecies of Corynorliinus. 



9. Teeth of two subspecies of Corynorliinus. 



10. Upper incisors of three specimens of Corynorliinus. 



11. Skulls of My Otis myotis, 21. thysanodes, and 21. nigricans (top). 



12. Skulls of 2Iy Otis myotis, 21. thysanodes, and 21. nigricans (side). 



13. Ear of 2Iyotis suhulatus, 21. l:eenii, 21. lucifugus, and 21. alascensis. 



14. Teeth of 2Iyotis yumanensis, 21. lucifugus, 21. lucifugus longicrus, 21. velifer. 



15. Teeth of Myotis calif ornicus, M. suhulatus, M. evotis, M. thysanodes. 



16. Maxillary teetli of four specimens of Myotis thysanodes. 



17. Abnormal premolar of Myotis thysanodes. 



18. Skull of Lasionycteris noctivagans. 



19. Teeth of Lasionycteris noctivagans. 



20. Ear of Pipistrellus suhflavus and P. hesperus. 



21. Skull of Pipistrellus hesperus and P. suhjiavus (top). 



22. Skull of Pijnstrell us hesperus and P. suhflavus (side). 



23. Teeth of Pipistrellus hesperus and P. suhflavus. 



24. Skull of Vespertilio hahamensis, V.fuscus, and V. serotinus (top). 



25. Skull of Vespertilio hahamensis, V.fuscus, and V. serotinus (side). 



26. Teeth of Vespertilio serotinus, and four subspecies of V.fuscus. 



27. Ear of Lasiurus horealis and L. teliotis. 



28. Skull of Lasiurus horealis and L. teliotis (top). 



29. Skull of Lasiurus teliotis and L. horealis (side). 



30. Teeth of Lasiurus teliotis and L. horealis. 



31. Skull of Lasiurus cinereus. 



32. Teeth of Lasiurus cinereus. 



33. Skull of Dasypterus intermedins. 



34. Teeth of Dasypterus intermedins. 



35. Skull of Xycticeius humeralis. 



36. Teeth of Xycticeius humeralis. 



37. Incisors of Bhogeessa and Xycticeius (front). 



38. Incisors of Bhogeessa and Xycticeius (crowns). 



39. Skull of Bhogeessa tum ida. 



40. Teeth of Bhogeessa tumida and B. gracilis. 



6 



