428 



INDEX, 



Labrus, 260. 

 Labyrinth, 71. 

 Labyrinthici, 262. 

 Labyrinthodon, 284. 

 Labyrinthodonta, 283. 

 Labyrinthodontidae, 284. 

 Lacerta, 320. 

 Lacertidae, 320. 

 Lacertilia, 318. 

 Lachrymal bone, 161. 

 Lachrymal duct, 76. 

 Lachrymal gland, 84. 

 Lactophrys, 267. 

 Lacuna, 15. 

 Laelaps, 316. 

 Lagena, 71. 

 Lagomorpha, 391. 

 Lagomyidas, 391. 

 Lagomys, 391. 

 Lagostomus, 391. 

 Lamella, 15. 

 Lamina cribrosa, 357. 

 Lamina terminalis, 50. 

 Lamna, 239. 

 Lamnidae, 239. 

 Lampetra, 223. 

 Lamprey eels, 223. 

 Laopteryx, 344. 

 Laosaurus, 317. 

 Lariosaurus, 306. 

 Larus, 349. 

 Larynx, 28. 

 Laternlis nerve, 64. 

 Lateral line, 68. 

 Lateral plate zone, 101. 

 Leather back tortoise, 310. 

 Leather turtle, 310. 

 Lebias, 257. 

 Lemming, 390. 

 Lechriodonta, 285. 

 Lemur, 415. 

 Lemuridas, 415. 

 Lemuroidea, 414. 

 Lens, 81. 

 Leopard, 412. 

 Lepidocottus, 260. 

 Lepidopus, 263. 

 Lepidotus, 252. 

 Lepidosauria, 317. 

 Lepidosiren, 273. 

 Lepidosteidas, 251. 

 Lepidosteus, 251. 

 Lepomis, 259. 

 Leporidae, 391. 



