-xlv LIST OF WOODCUTS. 



FIG. PAGE 



27. Raja nasnta. Principal branches of the fifth, seventh, and 



eighth nerves ... . 75 



28. Raja balls. The auditory organ . 81 



29. Gadtis fnorrhua. Side view of a di: articulated skull . 92 



30. The superficial muscles and nerves . 104 



31. The alimentary canal . 108 



32. The vascular system . . ■ II7 



33. The auditory organ . ... 123 



34. The brain ... . 125 



35. Lacerta agilis. Longitudinal section of the skull . 137 



36. The columella auris ... 142 



37. The chondrocranium, from above . 144 



(Lacerta viridis, ^^,. ^,,,. , 

 „ I . J ... (Jutnne of the head in the three species, 



38. -! Lacerta apihs. ^ , .. , . , . , 



I „ , . . showing the epidermic scales i« 



yZootoca vivipara, J 01- jj 



39. Lacerta viridis. Muscles of the trunk, ventral aspect ... 157 



40. Dissection from the ventral aspect, showing the alimen- 



tary canal and vascular system . . . i£o 



41. Urinogenital organs (male) . . .... 166 



42. Urinogenital organs (female) . 167 



43. The heart, dorsal aspect . . . .172 



44. The aortic arches . . . .173 



45. The brain . . 177 



46. Columba livia. Sacrum of a young individual 1S7 



47. Skull of a young individual 189 



48. The columella auris . 195 



49. Manus of a young individual 203 



50. Pelvis of a young individual . 204 



51. Tarso-metatarsus of an unhatched embryo 207 



52. Urinogenital organs (male) 228 



53. Urinogenital organs (female) . , 230 



54. The circulatory system . . 232 



55. The cloaca . . . 236 



56. The heart, from the dorsal aspect . . 241 



57. The lungs and syrinx . 245 



58. The brain . 255 



59. Dissections of the brain . . . , 259 



60. Lejnis cuniculus. Part of the alimentary canal with the 



portal system and bile-ducts . 301 



61. The vascular system , ... 309 



62. Urinogenital organs (male and female), from the side 317 



