Glandular region of protosome, pterobranch, 

 14 



Glandular tentacle tips, pterobranch, 14 



Glans, bifurcate, 320 



Glenoid articular area, 46 



Glenoid fossa, 171, 177 



Glial cells, 383 



Glomerular band, 314 



Glomerulus, 14, 291, 297 



Glomus, of ductus deferens, in bird, 324 



Glomus, see Glomerulus 



Glossubalanm, 12 



Glossopharyngeal nerve (IX), 386 



Glottis, 253, 280, 284 



Gluteus maximus, 428 

 Gluteus medius, 428 



Gluteus minimus, 428 



GlyptoUpis. 21 96 



Gnathostomate (gnathostomes), 20, 105, 192 

 basal interrelationships, 128 

 branchial arches, number, 128 

 teeth, 246 

 Goat, 212 



GOETHE (OR GOETTE), 2, 35, 139, 286 

 Gomphosis, 41 



Gonad, protochordate, 7, 8, 11, 14, 16 

 vertebrate, 314 



endocrine function, 382 

 medullary cords, 327 

 Gonad, medullary sex cords, 327 

 Gonalis, 326 

 Gonocoel, 327 



GOODRICH, 3, 91, 117,343 

 Gorilla, 292 

 Gracilis, 429 

 Grade, 76 



Granular secretory cells, 223, 225, 226 

 Granulocytes, 377 

 Gray crescent, 199 

 Great chain of being, 2 

 Greater multangular, 172 

 Greater omentum, 253 

 GREGORY, 3, 35 

 Gubemaculum testis, 320 

 Gular plates, 94, 114 

 lateral, 93, 97 

 marginal, 98 

 median, 25 

 Guppy (Lebisles), 382 

 Gymnarchm, 284, 286. 288, 345 

 Gymnophiona, see Apoda 

 Gyroptychim, fin rays, 241, 242, 243 



Habenulae, habenular ganglia, 388, 405 

 HAECKEL, 3 



Hagfish (see also Myxine, Eptatrelus), 18, 135 

 277, 380, 382 



head skeleton of, 131 



head veins, 366 



veins of body, 376 

 Hair, 29,217, 218, 219,2/5 

 Hallux, 177 



Halmaturus, female reproductive tract, 322 

 Hamate bone, 172 

 Hamulus, 40, 59 

 Haplodont, 249 

 Haplolepis, haplolepids, 114, 415 



Harriota. 123 

 HARVEY, 2 

 Hatschek's fossa, 6 

 Hatschek, ciliated pit of, 197 

 Haversian system, 228 

 HAY, 447 



Head arteries, general observations, 360 

 Head fold, 203, 205 

 Head skeleton, bones of, 35 

 development of, 36, 49, 57 

 joints of, 41 

 resume of, 140 

 Heart, 11, 199, 201, 339 

 Hedgehog, 2\^,348 

 Hemal (intercentral) arch, 143. 146, 147, 



161, 188 

 Hemal nodes, 378 

 Hemal spine, 146 

 Hemapophysis, 188 

 Hematology, see blood 

 Hemiazygous vein, 369 

 Hemibranchs, 199, 287 

 Hemichordata, 12, 19, 291, 382 

 relationship to chordates, 16 

 Hemipenes, 257, 324 

 Hemispheres, cerebral, 384 

 Hemoglobin, 377 



Hemopoietic tissue, 264, 303, 305, 306, 378 

 Hemorrhoidals, 367 

 Hensen's node, see primitive node 

 Hepatic artery, 367 



gastroduodenal branch, 367 

 Hepatic diverticulum, 8, 13, 256 

 Hepatic portal vein, 368 

 Hepatic vein, 9 

 anterior, 376 

 Hepatic vessels, 368 

 Heplmuhus, 1 19, 167, 286, 333, 334, 335, 345, 



381 

 Hermaphroditic, tunicates, 1 1 

 teleost, 333 

 toad, 325 

 Hesperomis, 251 



Heterocercal tail, 23, 168, 169 

 Heterocoelous vertebrae, !50, 151 

 Heterodonti, 248, 251 

 Heterodontus, 183 

 Heterophile, 377 



Heterostraci, Heterostracans, 19, 135, 168, 

 170, 186, 409, 411 

 head skeleton of, 137 

 Hexanchus, 119, 167 

 Hiatus facialis, 51 

 High-crowned teeth, 41 

 Hilus, 291 



Hippocampus, kidney, 306 

 Hippopotamus, 254 

 HOCHSTETTER, 369 

 HOLMGREN, 104, 134, 135, 139, 140, 



178, 182 

 Holoblastic, 193, 194 

 Holobranchs, 287, 289 



Holocephalans (see also Chimaerid, Hydro- 

 lagus), 20, 23, 119, 167, 274, 289, 290, 

 381, 382, 395, 418,446 

 compared with shark, 123 

 head skeleton, 123, 124 



kidney, 312 



reproductive system, 334 

 sensory-canal system, 413 

 teeth, 248 

 Holocrine, 224 



Hololecithal (see also isolecithal), 194 

 Holonephros, 304 



Holoptychtus, holoptychiids, 21, 96, 416 

 external appearance, 32 

 head skeleton, 97 

 teeth, 250 

 Holospondylous, definition, 155 

 Holostean, 20, 25, 32, 1 15, 415 



head skeleton compared with subholo- 

 stean. 116 

 Homo, see human 

 Homocercal tail, 25, 168, 169 

 abbreviated, 168 

 modified, 169 

 Homodonti, 251 

 Homologs, 34 

 Homosteus, 415 

 Hoofe, 218 

 Horn, 218,220 



Horny teeth of cyclostomes, 246 

 Horse, 22, 292, 323, 404 

 HOWES, 139 



Human (Homo) 22, 171, 212, 254, 292, 323, 

 403 

 anatomy, place in chordate morphology, 



34 

 arteries, head, 355, 356 

 Brachial plexus, 434 

 brain, 384 



Digestive system, 253, 257 

 Excretory system, 291 

 head skeleton, 35, 36, 42, 52, 57 

 inner ear, 409 

 lungs, development, 281 

 pectoral appendage, 172 

 pelvic appendage, 172 

 reproductive tract, 318,319, 322 

 urogenital systems, 323 

 veins, head, 361, 363 

 Humerus, 171 



deltoid crest, 424 

 HUXLEY, 3, 35, 76, 139 

 Hyaloid artery, 404 

 Hydatid appendix, 319 



Hydrolagus (see holocephalan), 20, 23, 126, 

 128, 165, 167, 168, 183, 188, 248, 351, 

 359,410,413, 414 

 brain, 395, 397 

 digestive tract, 277 

 external appearance, 24 

 fin bases, 187 

 girdles, 187 



head skeleton, 123, 124 

 inner ear, 409 

 isocercal tail, 24 

 pelvic region, 337 

 sensory-canal system, 414 

 urogenital system, 336 

 vertebrae, 164, 166 

 Hyla, 264 

 Hylus, 327 

 HYMAN, 3 



466 • INDEX 



