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A nomenclature of colors for naturalists : and compendium of useful knowledge for ornithologists. (1886)
Ridgway, Robert, 1850-1929 · Boston : Little · leaf 178
1. Frontal apex. -. Rictus. 3. Malar apex. ■t, Mental apex. 5. Ramus oi Mandible. 6. Gonvs. 7. Culinen. 8. >:ostril. J. Nasal operculum. 10. Pupil 11. Iris. 12. Orbital ring. 13. Supra - auricular region. 14. Supra - orbital region.LS. Supra - loral region, 16. Loral streak. 17. Postocular…Colors
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