INDEX 



Muscles — (Continued) 

 of the ear, 133 



of the ear, reduced in man, 215 

 of the eyeball, in man. Fig. 98, 



190 

 of vertebrate eye, 191 

 of the eye of shark (Chlamy- 



doselachus). Fig. 6, 13, 15 

 Facial, origin and development 

 of the, 43; origin of, in mam- 

 mals, 132 

 of gorilla. Fig. 23, 42, 67, 124 

 of man. Fig. 23, 42 

 geniohyoglossus, of anthropoids, 



126 

 of man, Fig. 67, 124, Fig. 68, 125 

 of monkey. Fig. 68, 125 

 of jaw development associated 

 with change of jaw form, 116; 

 evolution of the. Fig. 61, 

 103 

 of fishes, 104 



of shark, their derivation, 104 

 of chimpanzee, Fig. 61, 103 

 of Cklamydoselachus, Fig. 8, 18, 



also Fig. 61, 103 

 of Cynognathus, Fig. 61, 103 

 of Didelphys, Fig. 61, 103, also 



49 

 of Eryops, Fig. 61, 103 

 of man. Fig. 61, 103 

 of Notharctus, Fig. 61, 103 

 of Polypterus, Fig. 61, 103 

 of Scymnognathus, Fig. 61, 103 

 masseter, 116; at corner of 

 mouth of some reptiles, 131; 

 orbicularis oris, 133; orbi- 

 cularis oris of catarrhine 

 monkeys, 5Q; platysma, the 

 origin of the, 43; pterygoid, 

 116-117; pterygoid, external, 

 and mammalian joint. Fig. 

 22, 38, 39; sphincter colli, 

 43, 132 

 of Echidna, Fig. 23, 42 

 of Sphenodon, Fig. 23, 42 

 temporal, 116 



of tongue (geniohyoglossus) in 

 anthropoids. Fig. 67, 124 

 Muscle fibres, striped, function of 



the, 19 

 Mycterosaurus (Permo-Carbon- 

 iferous), dentition of. Fig. 77, 

 147; skull of. Fig. 19, 33, 

 Fig. 48, 78 



Nares, of crossopts, 24 



Naris, internal, series of skulls 

 showing evolution of. Fig. 

 53, 85 

 of Adapis 

 of Baphetes 

 of Captorhinus 

 of chimpanzee 

 of Cynognathus 

 of Eusthenopteron 

 of man (Australian aboriginal) 

 of Scymnognathus 

 of Seymouria 

 of Thylacinus 



Nasal bones, series of skulls show- 

 ing evolution of. Fig. 49, 79; 

 their origin in Amphibia 

 30; retained from fish to 

 mammals, 86; in advanced 

 lemuroids, 60 



Nasal chamber, median partition 

 of, 158; sinuses and antra of, 

 162; of mammal-like reptiles, 

 158; of man and monkeys, 

 compared, 161 



Nasal field, in embryonic develop- 

 ment, 166 



Nasal meati, 161; connections of 

 sinuses with. Fig. 85, 163 



Nasal pit of larval lamprey. Fig. 

 56, 94 



Nasal sac, embryonic origin of, 

 154; of embryo sharks and 

 mammals, 154 



Nasal septum, rates of develop- 

 ment of the, 167 



Naso-buccal groove, of sharks. 

 Fig. 66, 121, 122, 154, 

 157 



Naso-lacrymal duct, in man, 

 194 



Naso-pharyngeal passage, 119 



Nautilus, eye of, 181 



Neanderthal man, see Man, 

 Neanderthal 



Negritos, the nose of, 169 



Negro, the iris of, 199; develop- 

 ment of the nose in, 167; the 

 nose of, 169; Fig. 88, 168; 

 the nose of, infant. Fig. 88, 

 168 



Negro pygmy, nose of the, 164 



Nematodes, effect of ultraviolet 

 rays on, 174 



Neoceratodus, 25 



281 



