ILLUSTRATIONS 



Plate Page 



1 . Pacific Northwest Raccoon {Procyon lotor pacificus) Frontispiece 



2. Skins (dorsal view) Procyon lotor lotor, Procyon cancrivorus panamensis. 109 

 :?. Skulls (lateral view) Procyon lotor lotor, P. I. hirtus 111 



4. Skulls (lateral view) Procyon lotor litoreus, P. I. elucus _ 113 



5. Skulls (lateral view) Procyon lotor incuutus, P. maynardi. . 115 

 (). Skulls (lateral view) Procyon lotor excelsus, P. I. psora 117 



7. Skulls (lateral view) Procyon lotor hernandezii, P. I. pumilus 119 



8. Skulls (lateral view) Procyon pygniaeus, P. insularis insularis 121 



9. Skulls (dorsal view) Procyon lotor lotor, P. I. hirtus 123 



10. Skulls (dorsal view) Procyon lotor litoreus, P. I. elucus 125 



11. Skulls (dorsal view) Procyon lotor incautus, P. maynardi 127 



12. Skulls (dorsal view) Procyon lotor excelsus, P. I. psora 129 



13. Skulls (dorsal view) Procyon lotor hernandezii, P. I. pumilus 131 



14. Skulls (dorsal view) Procyon pygmaeus, P. insularis insularis 133 



15. Skulls (ventral view) Procyon lotor lotor, P. I. hirtus 135 



16. Skulls (ventral view) Procyon lotor litoreus, P. I. elucus 137 



17. Skulls (ventral view) Procyon lotor incautus, P. maynardi 139 



18. Skulls (ventral view) Procyon lotor excelsus, P. I. psora 141 



19. Skulls (ventral view) Procyon lotor hernandezii, P. I. pumilus 143 



20. Skulls (ventral view) Procyon pygmaeus, P. insularis insidaris 1 15 



21. Skulls (dorsal view) Procyon lotor elucus (male), P. I. elucus (female) 



P. /. lotor (lateral view of mandibular ramus) - — 147 



22. Skulls (dorsal and ventral views) Procyon cancrivorus panamensis 149 



Figure 



1. Map, showing distribution of species and subspecies of subgenus Procyon^ 24 



2. Map, showing distribution of subgenus Euproryon {Procyon cancrivorus 



panamensis) in Panama, _ __ 81 



VI 



