xxxvin 



LIST OF ENGRAVINGS ON WOOD. 



29. External aperture of ear of Strix Asia, 



Full size, 392 



30. CEsophagus, stomach, and duodenum of Strix virginiana, Half size, 395 



31. Cceca of Strix virffiniana, . . . Full size, 395 



32. Head of Strix virginiana, 



33. Head of Strix acadica, 



34. Digestive organs of Strix acadica, 



35. Digestive organs of Caprimulgus Carolinensis, 



36. Digestive organs of ^iVmwc/o /»MrjoM7-ea, 



37. Digestive organs of Vireo fiavifrons, 



38. Digestive organs of Alauda alpestris, 



39. Digestive organs of Sylvia Sialis, 



40. Digestive organs of Troglodytes ludovicianus, 



41. Digestive organs of Sitta Carolinensis, 



42. Digestive organs of Corvus cristatus, 



43. Digestive organs and trachea of Corvus americanus 



44. Digestive organs of Quiscalus versicolor, 



45. T)\ges.W\e orgaxis oi Icterus phceniceus, 



46. CEsophagus and stomach of Icterus pecoris, 



47. Cceca of Icterus pecoris, 



48. Digestive Organs of Sturnus ludovicianus, 



49. Digestive Organs of Bomhycilla caroline7isis, 



50. Digestive Organs of Fringilla leucopkrys, 



51. Digestive Organs of Coccyzus Americanus, 



52. Coeca of Coccyzus erythrophthalmus 



53. Digestive Organs of Picus principalis, 



54. Lateral view of head, tongue, hyoid bones, oesophagus, and 



trachea of Picus principalis, 



55. Same part viewed from beneath, 



56. Digestive Orgdias oi Picus pileatus, 

 bl. Glosso-laryngeal muscles of Picus auratus, 



58. Lateral view of head of Picus villosus, . 



59. Hyoid bones of Picus villosus, seen from above, 



60. Trachea of Trochilus Colubris, . 



61. Digestive Organs of Trochilus Colubris, 



62. Head and hyoid bones of Trochilus Colubris, from above, 



63. Head and hyoid bones of Trochilus Colubris, from beneath 



64. Tongue of Trochilus Colubris, 



65. Digestive Organs of Alcedo Alcyon, 



66. Digestive organs of Columba migratoria. 



396 

 ... 399 

 ... 400 

 403 

 408 

 428 

 448 

 453 

 ... 466 

 ... 473 

 475 

 ... 478 

 482 

 ... 489 

 ... 491 

 ... 491 

 ... 493 

 ... 495 

 ... 515 

 522 



526 



528 

 528 

 534 

 542 

 543 

 543 

 545 

 545 

 545 

 545 



Twice the natural size, 546 



Full size, 548 



554 



