xvi LIST OF ILLUSTRATIONS 



FIGURE PAGK 



36. Periplaneta Americana : The head, front view . . . . 155 



37. „ The head, from behind ...... 155 



38. „ Dissection of a male from the right side . . . 160 



39. „ Dissection of the hinder part of the abdomen of a 



female 168 



40. AmpMoxus lanceolatus : A young specimen, seen from the 



right side 172 



41. „ Transverse section through the anterior part of 



the pharynx 188 



42. „ Transverse section through the posterior part of 



the pharynx 191 



43. „ Transverse section passing through the atrial 



pore 194 



44. „ Transverse section passing through the anus . 195 



45. Scyllium camcula : The skill! and visceral skeleton from the 



right side 204 



46. „ The skull and visceral skeleton from the ventral 



surface 210 



47. „ The pelvic girdle and fins from the ventral surface 215 



48. „ The pectoral girdle and fins from the ventral sur- 



face 216 



49. „ Longitudinal vertical section through the head and 



anterior part of the body 224 



50. „ The venous system 226 



51. „ The branchial blood-vessels 231 



62. „ Transverse section passing through the posterior 



dorsal fin 235 



53-54. „ Dissection of the renal and reproductive systems 



of the female 240 



55-56. „ Dissection of the renal and reproductive systems 



of the male ........ 244 



57. Lepus cuniculus : Selected vertebrse 268 



58. „ The skull from the right side 276 



59. „ Dissection of a male from the left side . . . 308 



60. „ Diagrammatic transverse section through the head, 



showing the tympanic cavity and auditory ossi- 

 cles 312 



61. „ Longitudinal vertical section of the brain . . 353 



62. „ The brain from the ventral surface . . . . 356 

 68. „ Transverse section of the brain, passing through 



the third ventricle 362 



64. „ Transverse section of the brain, passing through 



the cerebellum 365 



65. Qallus hcmkima : The left half of the skeleton, from the right 



side 368 



66. „ The skuU from the right side 376 



67. Columba Ivvia : Dissection from the right side . . . 406 



