INDEX 



Labyrinth — (Continued) 



of ganoid (Lepidosteus), Fig. 



104, 205 

 of man, 202; Fig. 103, 203, 



Fig. 104, 205, Fig. 105, 206 

 of rabbit, Fig. 104, 205 

 of reptile {Hatteria) (Sphenodon) 



Fig. 104, 205 

 of shark {Acanthias), Fig. 104, 

 205 

 Labyrinthodont, attachment of 

 teeth, 112; pattern in teeth 

 of fossil crossopts. Fig. 18, 

 following 30, 112; teeth of 

 Devonian fish (Polyplocodus), 

 Fig. 18, following 30; traces 

 in teeth of Seymouria, 118 

 Labyrinthodonts, teeth of the, 



113, 115 

 Lacrymal apparatus of human 



eye. Fig. 101, 194 

 Lacrymal bone, 83, 194; develop- 

 ment of, 199; relation to 

 superior maxillary and jugal 

 in mammals, 87; series of ten 

 skulls showing evolution of. 

 Fig. 51, 81; similar in man 

 and anthropoids, 199; sur- 

 vives in man, 88 

 Lacrymal glands and canals in 



human eye, 194 

 Lacrymal sac, in human eye, 194 

 Lagena, of alligator. Fig. 104, 



205 

 Lampreys (Cyclostomata), ostra- 

 coderms ancestral to, 10; 

 compared with ostracoderms, 

 97; adult. Fig. 59, 97; embry- 

 ology of, 186; feeding habits 

 of, 98; mouth of adult, 129; 

 tongue of, 123; section of 

 tooth germ of. Fig. 60, 99; 

 "ciliated groove" of pharynx 

 {Ammocoetes stage), 98; longi- 

 tudinal section of larval. Fig. 

 59, 97; mouth of larval, 129; 

 mouth pouches in larval, Fig. 

 56, 94 

 Lanarkia, shagreen denticles of, 

 100; teeth represented by 

 denticles, 117 

 Lancelet, see Amphioxus 

 Laryngeal complex, of man and 



other vertebrates, 128 

 Larynx, in human embryo, 126; 



origin in branchial arches, 

 126 



Lasiopyga kolbi, side view of skull, 

 Y\g. 36, 59 



Lateral line organs of fishes, 206 



Lateral type, in man. Fig. 117, 

 232; result of crossing with 

 linear, 237 



"Lateral line," of Stockard, Fig. 

 118, 234 



Le Double, his work on lacrymal 

 bone, 199 



Legs, hind, of the tarsier, 53; Fig. 

 31, facing 53 



Leipsanolestes, left lower molar of. 

 Fig. 38, 62; jaw of. Fig. 37, 61 



Lemur, African (Arctocebus), top 

 view of skull. Fig. 35, 58 



Lemur (Lemur catia), ears of, 212; 

 face of, 56; Fig. 34, facing 56; 

 L. variegatus, face of. Fig. 34, 

 facing 56; olfactory sense of, 

 196; rhinarium of, 56 



Lemuroids, eyes of advanced, 60; 

 Adapis (Eocene) skull of, 

 under side. Fig. 53, 85; 

 Notharctus, skull, side view. 

 Fig. 36, 59; Notharctus, skull, 

 top view. Fig. 35, 58; hands 

 of, 198; orbital axes of. Fig. 

 35, 58, 196; Nycticebus, ex- 

 ternal ear of. Fig. 110, 213; 

 Pelycodus, left upper and 

 lower molars of. Fig. 38, 62; 

 jaw of. Fig. 37, 61; Pro- 

 pithecus, restoration of face 

 of, frontispiece 



Lens, in eye of Sepia, 180; lens, in 

 development of molluscan 

 eye. Fig. 95, 181; formation 

 of the, in vertebrate eye. Fig. 

 97, 185, 187; in eye of man. 

 Fig. 100, 193; in eye of shark. 

 Fig. 99, 192 

 "Light cells," of the primitive eye, 

 175, 176; Fig. 91, 175; of Am- 

 phioxus. Fig. 96, 183 

 Limulus, 7; eyes of, 182; Patten 

 derives vertebrates from 

 relatives of, 92 

 Lindsay-Johnson, his work on the 



fundus oculi, 198 

 Linear type of human growth. 

 Fig. 117, 232; results of cross- 

 ing with lateral, 237 



275 



