EXPLAJSTATION TO PLATE III. 



Figs. 1, 2, 3. Chordeiles virginianus, Gmelin. Niglithawk. 



Fig. 4. Chordeiles virginianus henryi, Cassin. Western Nighthawk. 



Figs. a, 0. Chordeiles virginianus chapmani, Sennett. Florida Nighthawk 



Figs. 7, 8, 9., 10. Chordeiles acntipennis texensis, Lawrence. Texan Nighthawk. 



Figs. 11, 12, 13. Pica pica hndsonica, Sabine. American Magpie. 



Fig. 14. Pica niittalli, Audtibon. Yellow-billed Magpie. 



Figs. ir>, 10, 17. Xanthoura luxuosa. Lesson' Green Jay. 



Figs. 18, 19. Perisoreus canadensis, Linnfeus. Canada Jay. 



Fig. 30. Perisorevxs canadensis nigTicapillus, Ridgway. Labrador Jay. 



Fig. 21. Perisoreus obscurus, Ridgway. Oregon Jay. 



Figs. 33. 33. Nucifraga colnmbiana, Wilson. Clarke's Nutcracker. 



Figs. 24, 35. Cyanocephalus cyanocephalus. Wied. Piiion Jay. 



