486 



INDEX 



Mammary pouch, 28 



Mandibular arch, 6f) 



Manubrium sterni, 61 



Manus, 126—134 



Marsupial bones, 121 



Marsupial pouch, 2S, 'M5 



Maturation, 3 



Meatus, external auililory, 224 



Meckel's cartilage, 69 



Mediastinum, 298 



Medullary cord and groove, 149 



Membrana tympani, 224 

 tympaniformis, 286 



Membrane bones, 71 



Membranous labyrinth, 221 



Menisci of vertebra, 46, 48, 49 



Meroblastic segmentation, 5 



Mesentery, 236 



Mesoblast, 4, 6 



Mesoblastic somites, 8, 66 



Mesoderm, 4 



Mesonephric duct, 341, 346 



Mesonephros, 341 



Mesopterygium, 122 — 125 



Metacarpus, 126—134 



Metamerism of head and body. 33, 65, 181 



Metanephric duct, 346 



Metanephros, 346 



Metapterygium, 110 



Metatarsus, 126—134 



Milk dentition, 245 



Morula, 4 



Mouth, 235, 239 



Mflllerian duct, 346 



Muscular system, 135 — 145 : — voluntary 

 and involuntary, 135 ; integumentary 

 musculature, 136 ; facial muscles, 136 ; 

 muscles of the trunk, 137 ; of the dia- 

 phragm, 141 ; of the appendages, 142 ; 

 of the eyes, 181, 216 ; visceral muscles 

 — Fishes, 142 ; Amphibia, 143 ; Amni- 

 ota, 144 ; muscles of the feather sacs, 

 21 ; arrectores pili, 26 ; ciliary, 210, 

 213, 214 ; of iris, 210, 214 ; cremaster, 

 375 ; lateral, 137 ; papillary, 316 ; 

 platysma myoides, 136; stapedius, 231; 

 tensor tympani, 231 



Myocommata, 137 



Myotomes, 66, 137 



N. 



Nails, 26 



Nares (see Nostrils), 



Naso-lachrymal duct, 201 



Naso-palatine duct of Cvclostomes, 74 



Navicular, 133 



Neck, 12 



Neoatoma, 155 



Nephridia, 341 , 346 



Nephrostomes, 341, 345 



Nerve-eminences, 191) 



Nerve-plexuscw. 179 



Nerve, lateral, 185, 187 

 phrenic, 141 



Nerves, cerebral, 180 — 188 ; olfactory, 

 196 ; optic, 207 ; oculomotor, trochlear, 

 and abducent, 184, trigeminal, 184; 

 facial, 185; auditory, 186 ; glossopharyn- 

 geal, 186 ; vagus, 186 ; spinal accessory, 

 187 ; hypoglossal, 188 



Nerves, spinal, 177, 179 



Nervous system, 149 ; central, 149 — 177 ; 

 peripheral, 177 — 189; sympathetic, 189 



Neural ridge, 177 



Neural tube, 9 



Neurenteric canal, 151 



Neuroglia, 149 



Neuropore of Amphioxus, 157 



Nictitating-membrane, 217 



Nose, external, 204 



Nostrils, 73, 82, 197 



Notochord, 5, 9, 34—49 



Nucleolus, 3 



Nucleus, 3 



Nucleus pulposus, 49 



0. 



Obturator foramen. 111, 117, 119 



Odontoid bone, 46 



QUsophageo-cutaneous duct, 275 



CEsophagus, 238, 257, 262, 263 



Olfactory organ, 196 — 207 



Olfactory scrolls, 203 



Olfactory tract and bulb, 1 59 



Omosternum, 58 



Oosperm, 3 



Opercular bones, 77, 79 



Operculum, 75 



Orbital ring, 79, 91 



Organ of Corti, 230 



Os penis and clitoridis. 384 



Ossification, 71 



Osteocranium, 69 



Otic bones, 78 



Otoliths, 222 



Ovarian follicle, 347 



Ovary, 347, 359—375 



Oviducal gland, 363 



Oviduct, 346 



Ovipositor, 360 



Ovotestis, 367 



Ovum, 2, 347 



Pacinian corpuscles, 195 



Palate, 92, 94, 288 



l'ala30stoma, 155 



Palatoquadrate, 69, 75, 76, 78 



Pancreas, 272 



Panniculus adiposus, 26 



Parachordal and prechordal cartilages. 67 



Paraphysis, 155 



