LIST OF ILLUSTRATIONS 



FIG. 



182. Sepia cultrata 



183. Nautilus pompilius 



154. Nautilus pompilius, section of shell 



155. Spirula perorui 



186. Sepia cultrata, shell 



187. Loligo vulgaris 



158. Argonauta argo . 



159. Chromatophore of Sepia 



190. Sepia cultrata, dissected 



191. Nautilus pompilius, anatomy 



192. Sepia officinalis, jaws . 



193. Sepia officinalis, enteric canal 



194. Nautilus pompilius, oral surface of male and female 



195. Balanoglossus ....... 



196. Balanoglossus, diagrammatic sagittal section of anterior end 



197. Ascidia ........ 



198. Ascidia ........ 



199. Ascidia, diagram of longitudinal section 



200. Ascidia mammillata, larva ..... 



201. Diagram of metamorphosis of larva into fixed Ascidian 



202. Botryllus violaceus ...... 



203. Amphioxus lanceolatus, ventral and side view 



204. Amphioxus, diagram of anatomy .... 



205. Amphioxus lanceolatus, sections .... 



206. Dogfish, fins, etc. ...... 



207. Lacerta viridis ....... 



20S. Lepus cuniculus, lateral view of skeleton with outline of body 



209. Scyllium, vertebra.- ..... 



210. Lizard, vertebne of .... . 



211. Lepus cuniculus ...... 



212. Scyllium canicula ..... 



213. Lacerta agilis, three views of skull 



214. Fore and hind limbs of vertebrate, diagram 



215. Tooth, longitudinal section, semi-diagrammatic 



216. Scyllium canicula, dissection 



217. Lacerta agilis, viscera in their natural relations 



218. Circulation of a fish, diagram 



219. Scyllium canicula, brain, dorsal view . 



