( xxxvii ) 



LIST OF ENGRAVINGS ON WOOD. 



Page 



1. Digestive organs of Picus querulus, . - Full size, 16 



2. Proventriculus, stomach, and duodenum of Anser Bernicla, ... 27 



3. Rectum, cceca, and oviduct of Anser Bernicla, . . ... 28 



4. CEsophagus, stomach, and duodenum of Mergtcs 



Serrator, .... Less than half-size, 98 



5. CcEca of Mergus Serrator, . . . Full size, 98 



6. Proventriculus, stomach, and duodenum of Cygnus 



americanus, ..... Half size, 143 



7. Intestine of Cygnus americanus, . • . One-third do. 143 



8. Proventriculus, stomach, and duodenum of Pelecanus 



Juscus, ..... Half size, 214 



9^ Ova, oviduct, cloaca, rectum, and cceca of do. . Full size, 215 



10. Digestive organs of ^Mfeo lagopus, . . Half size, 225 



11. QEso^i^aigMS of Phoenicopterus ruber, . . ... 262 



12. Cceca of Phcenicopterus ruber, . . . Full size, 262 



13. "Digestive ovgajxs of Phcenicopterus ruber, . . .. 263 



14. CEsophagus and stomach of Icterus Baltimore, . ... 281 



15. Oisophagus, stomach, &nA. A»ioAem\.va. of Cathartes Aura, Half size, 341 



16. Duodenum of Cathartes Aura, . . . Full size, 342 



17. Internal surface of stomach of Ca<^rfe« ^wra, . ... 342 



18. Section of brain, and nasal cavity of Cathartes Aura, ... 343 



19. External nares of Cathartes Aura, . . ... 344 



20. Digestive Organs of CafAar^es afra^M*, . . ... 348 



21. Nasal cavity of Co^Aartes a^ra^MS, . . ... 349 



22. Digestive organs and trachea of Polybwus brasili- 



ensis, ..... One-third size, 353 



23. Proventriculus, stomach, and intestine of Faleo leu- 



cocephalus, ..... Full size, 360 



24. Cceca, rectum, and cloaca of i^a/co /et«?ocepAa^i«, . ... 361 



25. CEsophagus, stomach, and duodenum of /^a/co/Mrcafw*, ... 373 



26. External aperture of ear of Strix nyctea, . ... 385 



27. External ear of Strix nebulosa, . . • ... 387 



28. Head of Strix americana, . . . ... 390 



