LIST OF ILLUSTRATIONS 



FIG. 



220. Eye of man, diagrammatic horizontal section 



221. Petromyzon marinus ..... 



222. Myxine glutinosa, head .... 



223. Petromyzon marinus ..... 



224. Scyllium canicula, side view of skull 



225. Scyllium, pectoral arch .... 



226. Scyllium canicula, dissection 



227. Diagram of the vascular system of a fish 



228. Scyllium catulus 



229. Dogfish, egg-case ..... 



230. Scyllium, embryo, with gills, etc. 



231. Lamna cornubica ..... 



232. European sting-ray (Urolophus cruciatus) . 



233. Skeleton of Urolophus testaceus . 



234. Heptanchus, side view of skull 



235. Salmo fario, fins, etc. ..... 



236. Salmo fario, caudal end of vertebral column 



237. Pleuronectes cynoglossus .... 



238. Ctenoid and ganoid scales .... 



239. Polypterus birchir ..... 



240. Skull of sturgeon ..... 



241. Salmo fario, entire skull, left side j 



242. Premaxillse of Sargus ..... 



243. Hippocampus (sea-horse) .... 



244. Ceratodus fosteri 



245. Ceratodus fosteri, anterior portion of skeleton 



246. Rana temporaria ..... 



247. Rana temporaria, skeleton .... 



248. Rana temporaria, skull, different views 



249. Rana esculenta, shoulder girdle . 



250. Rana esculenta, pelvic girdle from right side 



251. Rana temporaria, dissection from left side . 



252. Rana temporaria, heart with cavities laid open 



253. Rana temporaria, arterial system, etc. . 



254. Rana temporaria, venous system, etc. . 



255. Rana esculenta, brain from above and below 



256. Rana esculenta, urinogenital organs of male . 



257. Rana esculenta, urinogenital organs of female 



