EXPLANATION TO PLATE XII. 



Pig. L Strix pratincola, Bonaparte. American Barn Owl. 



Fig. 2. Asio wilsonianus, Lesson. American Long-eared Owl. 



Pig. 3. Asio accipitrinus, Pallas. Short-eared Owl. 



Pig. 4. Syrnium nebulosum, Forster. Barred Owl. 



Pig'. 5. Scotiaptex cinerea, Gmelin. Great Gray Owl. 



Pig. 6. Nyctala tengmalmi richardsoni, Bonaparte. Richardon's Owl. 



Pig. 7. Nyctala acadica, Gmelin. Saw-whet Owl. 



Pig. 8. Megascops asio, Linnteus. Screech Owl. 



Pig. 9. Megascops asio macfarlanei, Brewster. MacParlane's Screech Owl. 



Pig. 10. Megascops asio maxwelliae, Ridgway. Rocky Mountain Sci-eech Owl. 



Pig. 11. Meg'ascops asio trichopsis, Wagler. Mexican Screech Owl. 



Pig. 12. Bubo virginianus, Gmelin. Great Horned Owl. 



Pig. 13. Micropallas whitneyi, Cooper. Elf Owl. 



Pig. 14. Speotyto cunicularia hypogcea, Bonaparte. Burrowing Owl. 



Pig. 15. Megascops flammeolus, Kaup. Plammulated Screech Owl. 



Pig. 16. Speotyto cunicularia floridana. Ridgway. Plorida Burrowing Owl. 



Pig. 17. Glaucidium phalcenoides, Daudain. Perruginous Pigmy Owl. 



Pig. 18. Surnia ulula caparoch, MuUer. American Hawk Owl. 



Pig. 19. Nyctea nyctea, Linnaeus. Snowy Owl. 



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