100 



NORTH AMERICAN BIRDS. 



7449- 



4886. 



7272. 





7897. 



628. 



7449- Sirix pratincola. Natural si«. 



4886. otus wilsonianus. Natural size. 



7272. Scotiaptex cincrciiin. Two thirds. 



7899. Nyctalc ricllardsniii. Natural sUe. 



414- Scops asio. Natural sue. 



773- Bubo virglnianus. Two thirds. 



&>8. Nyctea nivc.^ Two thirds. 



7897, Surnia ulula. Natural si«. 



438. Glaucldium ferrugineuiu. Natural siie. 



437- Spheotyto hypgia. Natural sire. 



