XX 



Page 



27. Details of the formation of an accessory cotyledon in a Cow's 



placenta of the 6th month 77 



28. Sheep. — Detail of cotyledonary crypt 79 



29. Sheep. — Formation of new crypt-cavities by the down growth 



of cell-masses from patches of unmodified — not flattened — 

 epithelium 81 



30. Section through one side of the chorionic ring and base of the 



diverticulum allantoidis of the Sheep 82 



31. aandb. Amniotic epithelial thickening, c. Glycogenic epithelium 



of the allantoic stalk, and d, e. Glycogenic connective-tissue 

 cells, of Cow of 4 months » . 84 



32. Uterus of Sheep 91 



33. Rhomboidal and lanceolate crystals of bilirubin obtained from 



a chloroform solution of the dried allantoic bodies of the 

 Pig 93 



34. Skull of Wolf 115 



35. Skull of Hare .115 



36. Diagram of jaws. Type 1 115 



37. Skull of Dog. A. Glenoid fossa deepened by a process of the 



squamosal bone, B. Cylindrical condyle of low^er jaw .... 116 



38. Diagram of jaws. Type 2 116 



39. Diagram of jaws. Type 2. Showing the crowns of the teeth 



set in a plane at right angles to the greatest pressure ...... 117 



40. Diagram of jaws. Type 2. Showing the emenentia articularis . 117 



41. Diagram of jaws. Type 2. Showing lengthening of jaws in 



order that incisors may be widely separated, &c 118 



42. Diagram of jaws. Type 2. Showing the introduction of a second 



angle to procure wide separation of the incisors, &c 119 



43. Skull of Tragulus javanicus 119 



44. Diagram of Snake's jaws 120 



45. Skull of Iguanodon bernissartensis 121 



46. Diagram of jaws. Type 2 R 121 



47. Skull of Batagur Tortoise 122 



48. Ring-tailed Lemur and young 124 



49. Lateral aspect of the skulls of: — a. Pseudocolaptes boksineautl. 



b. Hylactes megapodius. c. Batara cinerea. d. Dendroco- 

 laptes lyicinnnics 136 



50. Ventral aspects of the skulls of : — a. Hylactes megapodius. 



b. Philejntta jala. c. Pseudocolaptes hoissineauti. d. Den- 

 drocolaptes picumnus. e. Batara cinerea. f. Xipliorhynchus 

 troehilirostris. g. Dorsal aspect of skull of Pseudocolaptes . . 140 



51. Form of the posterior border of the sternum and the relations of 



the articulations of the bones of the Shoulder-girdle at the 

 foramen triosseum 148 



52. Phylogenetic tree indicating the probable relationships of the 



"Tracheophone " Passeres ]58 



53. Ceratodiis forsteri in various positions of rest and movement . . 173 



54. 0)'«!!('(Zits/orsfm in various positions of rest and movement .. 175 



