43^ 



INDEX. 



Snapping turtle, 311. 

 Snipe, 349. 

 Sole, 265. 

 Solea, 265. 

 Soleidss, 265. 

 Solenodontidse, 385. 

 Solenoglypha, 325. 

 Solenorhynchus, 258. 

 Solenostoma, 258. 

 Solenostomidas, 258. 

 Solidungula, 393. 

 Somatic layer, 8. 

 Somatic nerves, 64. 

 Somites, 100. 

 Sorex, 385. 

 Soricidae, 385 

 Spade foot toad, 287. 

 Spalax, 390. 

 Sparidse, 259. 

 Sparrow, 351. 

 Spelerpes, 285. 

 Spermatic artery, 191, 

 Spermatophores, 209. 

 Spermatozoon, 5, 207. 

 Spermophilus, 390. 

 Sperm whale, 409. 

 Sphargis, 310. 

 Sphenethmoid, 278. 

 Spheniscus, 347. 

 Sphenodon, 314. 

 Sphenodontina, 314. 

 Sphenoid, 356. 

 Sphenoidal fissure, 164, 

 Sphenopalatine ganglion, 62. 

 Sphenotic, 244. 

 Sphrynidse, 239. 

 Sphyrsena, 262. 

 Sphyrasnidoe, 262. 

 Spinal accessory nerve, 59. 

 Spinal cord, 44. 

 Spinal nerves, 46. 

 Spinous procesa, 138. 

 Spiny ant-eater, 377, 

 Spiracle, 23, 230. 

 Spiral valve, 36. 

 Splanchnic layer, 8. 

 Splanchnoccele, loi, 103. 

 Spleen, 200. 

 Splenial bone, 164. 

 Splenic artery, 190. 

 Splint bone, 394. 

 Spoonbill, 348. 

 Spreading viper, 325. 

 Springbok, 399. 



Squalidae, 239. 

 Squalodontidse, 408. 

 Squaloraia, 242. 

 Squalus, 239. 

 Squamata, 317, 382. 

 Squamipinnes, 262, 

 Squamosal, 161. 

 Squatinidse, 239, 

 Squirrel, 390. 

 Stagodon, 403. 

 Stapes, 74, 159. 

 Star gazer, 261. 

 Steatornis, 348. 

 Steatomithidas, 348. 

 Steganopodes, 347. 

 Stegocephali, 283. 

 Stegodon, 401. 

 Stegosauria, 316. 

 Stegosaurus, 316. 

 Stenofiber, 390. 

 Stenostoma, 326, 

 Stenson's duct, 77. 

 Stercorarius, 349. 

 Stereospondyli, 284. 

 Sterna, 349. 

 Stemebrse, 148. 

 Stemothasrus, 311. 

 Sternum, 147, 

 Stickleback, 258. 

 Sting ray, 239. 

 Stomach, 34. 

 Stomodeum, 18. 

 Stork, 348. 

 Strand rat, 390. 

 Stratified epithelium, g. 

 Stratiodontidae, 257. 

 Stratum comeura, 88. 

 Stratum lucidum, 8g. 

 Streptostylica, 300. 

 Striped muscle, 12. 

 Strix, 348. 

 Stromateidas, 263. 

 Struthio, 345. 

 Struthiones, 345. 

 Struthionidse, 345. 

 Sturgeon, 250. 

 Style, 365. 

 Stylephorus, 264. 

 Stylinodon, 403. 

 Stylohyoid, 165. 

 Subclavian artery, 188. 

 Subclavian vein, 194, 197. 

 Subintestinal vein, 193. 

 Sublingua, 21, 364. 



Sub-mucosa, 39. 

 Sub-operculum, 161. 

 Subungulata, 392. 

 Suckfish, 264. 

 Suckers, 255. 

 Suidse, 397. 

 Suina, 396. 

 Sula, 347. 

 Sunfish, 259, 267. 

 Sun grebe, 349. 

 Supra-angulare, 164. 

 Supraclavicle, 169. 

 Suprascapula, 168. 

 Supraoccipital, 158. 

 Supraorbital, 161, 

 Suprarenal body, 131. 

 Supratemporal fossa, 166. 

 Surf perch, 260. 

 Surinam toad, 286. 

 Surmullet, 261. 

 Suspensorium, 155, 

 Sus, 397. 

 Swan, 348. 

 Sweat glands, 90. 

 Swell fish, 267. 

 Swift, 320. 

 Swimbladder, 25. 

 Swine, 397. 

 Swordfish, 263. 

 Sympathetic system, 47. 

 Syncitium, 12. 

 Synentognathi, 257. 

 Synetheres, 391. 

 Syngnathus, 258. 

 Syngnathidas, 258, 

 Synodc tectum, 151. 

 Synsacrum, 331. 

 Syphostoma, 258. 

 Syrinx, 29. 



Tactile cells, 68. 

 T^niodonta, 402. 

 Tasniosomi, 264. 

 Tail coverts, 330. 

 Talon, 365. 

 Talpa, 385. 

 Talpidse, 385, 

 Tamias, 390. 

 Tapetum, 863. 

 Tapiridse, 395. 

 Tapirus,395. 

 Tardigrada, 383. 

 Tarsiidas, 415. 

 Tarsipes, 380. 



