INDEX 



697 



Labyrinthodonts, 256, 288, 295 



LACERTA, 304, 353 : External features, 

 304 : Exo-skeleton, 305 : Endo- 

 skeleton, 305-313 : Digestive sys- 

 tem, 313, 314 : Vascular system, 

 314, 315, 316, 318: Organs of 

 respiration, 315, 318 : Brain, 318, 

 319, 320 : Spinal cord, 320 : Organs 

 of special sense, 321, 322 : Urinary 

 and reproductive systems, 322, 323 : 

 Systematic position, 327 



Lacerta muralis, 348 



Lacertidce, 327*, 358 



Lacertilia, 324*, 327, 328, 329, 332, 

 333, 335, 336, 337, 338, 342, 345, 

 346, 347, 348, 349, 351, 353, 354, 

 358, 359 



Lacrymal bone, 307, 308 



Lacrymal gland, of Lizard, 321 : 

 Mammalia, 563 



Lacteals, 95* 



Lacustrine fauna, 616 



Lcemargus, 172, 175, 176 



Lagena, 208, 321, 322 See Ear 



Lagenorhynchus, 544 



Lagomyidce, 474 



Lagopus scoticus, 602 



Lamarck, 629, 655, 656 ^ 



Lamarckian theory, 628 



Lambdoidal suture, 439 



Lamina perpendicularis, 438* 



Lamina terminalis, of Craniata, 99* 

 See Brain 



Lamna cornubica, 165 



Lampern, 120 



Lamprey See Petromyzon 



Lanarkia spinosa, 254 



Lancelot See Amphioxus 



Land tortoises, 325, 331, 357, 358 



Languets, 24*, 25, 29 



Lankester, E. R., 668 



Lapillus, 208*, 209 



Larks, 404 



Larus, 403, 411, 421,429,605 



Larvacea, 21*, 23, 28 



Laryngeal nerves, of Craniata, 103 



Laryngo-tracheal chamber, 269, 295 



Larynx, of Lizard, 318 : Reptilia, 346 : 

 Bird, 385 : Rabbit, 453 



La Sueur, 662 



Lateral line, 105* : Petromyzon. 121 : 

 Dogfish, 140 : Holocephali,' 183, 

 184 : Trout, 192, 194 : Geratodus, 

 241 : Amphibia, 299 



Lateral line canal, 140 : Elasmo- 

 branchs, 174 



Lateral line organs, 105*, 174, 298 



Lateral nerve, of Craniata, 102 

 Lateral plate, of Amphioxus, 59 : of 

 mesoderm, 118 



Lateral post-frontal, 308* 



Lateral temporal fossa, 309* 



Lateral vein, 91 



Lateral ventricle, of Craniata, 97 See 

 Brain 



Laurentian period, 618 



Leather-backed Turtle, 336 



Leeuwenhoek, 649 



Lemur, 472 See Prosimii 



Lens, 106, 108 



Lens -capsule, 108 



Lens involution, 109 



Lepidosiren, 239, 250, 251 



Lepidosteus, 213, 218, 221, 222, 223, 

 227, 229, 231, 232, 233, 234, 235 



Lepidosteus platystomus, 213 



Lepidotrichia, 202* 



Lepidotus maximus, 238 



Leporidce, 470, 474 



Leptocephalus, 235 



Leptoglossce, 327* 



LEPUS CUNICULUS, 432 : External char- 

 acters, 433, 434 : Skeleton, 434-444 : 

 Ccelome, 444, 445 : Digestive organs, 

 445-448 : Circulatory organs* 446- 

 452 : Respiratory organs, 453, 454 : 

 Ductless glands, 454 : Nervous 

 system, 454, 455, 456, 457, 458: 

 Organs of special sense, 458 : Urino- 

 genital organs, 459, 460 : Develop- 

 ment, 461 : Systematic position, 

 474 



Lepus variabilis, 617 



Leuckart, 660, 661 



Leucocytes, 94 



Ley dig's gland, 159* 



Lieberkuhn, 661 



Lienogastric artery, 151 



Limb-girdles, of Craniata, 80, 81* 

 See Pectoral arch and Pelvic arch 



Limb -skeleton, of Craniata, 79, 80 : 

 Dogfish, 145 : Elasmobranchii, 

 169 : Holocephali, 186 : Trout, 201, 

 202 : Teleostomi, 224 : Dipnoi, 

 243 : Frog, 265, 266 : Amphibia, 

 294: Lizard, 310, 311, 312, 313: 

 Reptilia, 342, 343, 344: Pigeon, 

 379, 380, 381 : Aves, 417, 419, 420 : 

 Rabbit, 442, 443, 444: Mammalia, 

 500 : Prototheria, 505 : Metatheria, 

 508, 510 : Edentata, 511, 512, 513 : 

 Cetacea, 516 : Sirenia, 519 : Un- 

 gulata, 525 : Carnivora, 530 : Ro- 

 dentia, 532 : Insectivora, 533 : 

 Chiroptera, 535 : Primates, 538, 539, 

 540, 



Limbs, of Craniata, 67, 81 : Dogfish, 

 141 : Elasmobranchii, 165, 166 : 

 Holocephali, 184 : Trout, 194 : 

 Teleostomi, 219 : Geratodus, 240 : 

 Dipnoi, 250 : Frog, 257 : Amphibia, 

 294 : Lizard, 304, 305 : Reptilia, 



