556 



INDEX 



Eurypterus, 524 



Eustachian tube, 269, 494 



Eutheria, 35 



excretory tubules, 365, 366 



exoccipitals, 148 



exoskeleton, 79 



exoskeleton of reptiles and birds, 



84 



external ear, 161, 496, 497 

 external genitals : male, 398-401 ; 



female, 403; development of, 



403-4 5. 

 exuviae, 77 

 external nose, 484 

 eye, 497-505 

 eyeball, muscles of, 503 

 eyeball, skeletal elements of, 144, 



145, I5i 



eyeball, size of, 503 

 eyebrows, 505 

 eye-capsules', 145 

 eye, development of, 422, 423 

 eyelids, 498, 503, 504 

 eye of cephalopod, 499 



Fallopian tube, 387 



fascia cremasterica, 396 



femoral glands, of lizard, no, in 



fenestra cochleae, 494 



fenestra ovalis, of ear, 493 



fertilization, 50, 379, 397, 39$ 



fetal circulation, 320-324, 332-339, 

 342-352, 357 



field-mouse, 91 



fifth ventricle, 418 



filum terminale, 431 



fins of fishes, 164, 167 



fin, development of, 168, 218-219 



fin-fold, 327 



fin-fold theory, 163, 238 



fin rays vs. digits, 184, 185 



fin spines, 162 



fin vs. hand, 184-188 



fishes, 29, 30, no, 148, 163, 164, 

 165, 167, 175, 192, 200, 245, 247, 

 262, 263, 268, 271, 272, 285, 291, 

 296, 304, 306, 307, 3io, 3H, 324, 

 330, 339, 342, 347, 352, 353, 355, 

 358, 375, 409, 425, 436, 437, 452, 

 460, 465, 468, 469, 471, 484, 485, 

 488, 490, 491, 503, 517, 519, 527. 



fission, 4, 5 



fissues, of brain, 417 



fissue of Rolando, 417 



fissue of Sylvins, 417 



flat-worms, 520 



flexures, in brain, 414 



fly, 428 



fly, nervous system of, 428 



foliate papillae, 476 



foramen epiploicum, 294 



foramen interventriculare, 411, 416, 

 420 



foramen of Monro, 411 



foramen ovale (of heart), 357 



foramina of Majendie, 413 



forebrain, 411, 443 



fossa rhomboidalis, 427 



fourth ventricle, of brain, 412 



fovea centralis, of retina, 499 



free-limbs : development of, 218, 

 219; early history of, 175, 176, 

 177; modifications of, 165, 182, 

 183, 184; nomenclature of, 178; 

 origin of, 165 ; serial homology 

 of, 178; typical skeleton of, 176. 



free nerve endings, 473 



friction ridges, 90, 107 ; formation 

 of, 88, 89, 90; ground plan of, 

 92; relation to pads, 90, 91. 



friction ridge patterns, 92, 93 



frog, 198, 263, 264, 285, 290, 307, 

 313, 359, 371, 397, 420, 426, 428, 

 430, 439, 440, 489, 526 



frontal organ, 420 



fundus of stomach, 292 



furcula, 174 



galea aponeurotica, 255 



Galeopithecus, 37 



gametes, 7, 49, 55 



ganglion, or ganglia : buccale, 

 456; ciliary, 447, 452, 464; gas- 

 serian, 448, 456; geniculare, 454, 

 456; jugulare, 453, 456; laterale, 

 453, 456; list of, in head, 456; 

 mandibulare, 456; of articulates, 

 428, 429, 463; of fly, 428, 429; 

 of myriapod, 428; otic, 451, 452, 

 455, 464; ophthalmicum profun- 

 dum, 456; ophthalmicum super- 

 ficiale, 456; petrosum, 454, 456; 



