LIST OF ILLUSTRATIONS 



258. Rana temporaria, stages in life-history 



259. Salamandra maculosa .... 



260. Siren lacertina ..... 



261. Pygopus lepidopus .... 



262. Hatteria punctata .... 



263. Grecian tortoise, Testudo graeca . 



264. Skeleton of crocodile .... 



265. Cistudo lutaria ..... 



266. Chelone midas ..... 



267. Skull of rattlesnake .... 



268. Pectoral arch and sternum of Lacerta agilis 



269. Heart of monitor, Varanus . 



270. Brain of alligator, from above 



271. Pineal eye of Hatteria punctata, section 



272. Poison apparatus of rattlesnake . 



273. Columba livia, diagram with most of feathers removed 



274. Columba livia, feather .... 



275. Pterylosis of Columba livia 



276. Columba livia, bones of the trunk 



277. Columba livia, cervical vertebra . 



278. Columba livia, sacrum of nestling 



279. Columba livia, skull of young 

 2S0. Columba livia, hyoid apparatus . 

 281. Columba livia, bones of left wing 

 2S2. Columba livia, bones of left manus of nestlin 



283. Columba livia, left innominate of nestling 



284. Columba livia, bones of left hind-limb 



285. Columba livia, part of left foot of embryo 



286. Columba livia, muscles of left wing 



287. Columba livia, dissection from right side 

 2S8. Heart of pigeon, dorsal aspect 



289. Columba livia, brain, different views . 



290. Eye of pigeon ..... 



291. Columba livia, right membranous labyrinth of ear 

 292T Columba livia, male urinogenital organs 



293. Columba livia, female urinogenital organs 



294. Feather of cassowary .... 



295. Wing of nestling of Opisthocomus and of adult Apteryx 



