54 



INDEX 



Chondocranium, 43, 51 

 Choroid coat, 39 

 Choroid plexus, 43 

 Circulatory system, 24 

 Clasper, 8 

 Cloaca, 16 

 Cloacal aperture, 9 

 Coelom, 14 

 Columnae carnae, 32 

 Conjunctiva, 39 

 Conus arteriosus, 25 

 Cornea, 39 

 Corocoid bar, 51 

 Cranial, 6 

 Cranial nerves, 44 

 Crista, 41 

 Crown, 10 

 Cystic duct, 17 



Demibranch, 12 

 Dentine, 9, 10 

 Diencephalon, 43 

 Digestive system, 15 



derivatives, 16, 17 



external aspect, 15, 16 



internal aspect, 17 

 Dissection, 2 

 Dorsal, 6 

 Drawings, 1 

 Duct, bile, 17 



mesonephric, 20, 23 



pancreatic, 17 



Wolffian, 21 

 Duodenum, 16 



Ear, inner, 40 



Egg case, 22 



Enamel, 9, 10 



Endolymph, 41 



Endolymphatic ducts, 40 



Esophagus, 12, 15 



Evolution, 10 



External characteristics, 4 



Eye, 8, 38 



Eyeball, 38 



Eye muscles, external rectus, 39 



inferior rectus, 39 



inferior oblique, 39 



internal rectus, 39 



superior rectus, 39 



superior oblique, 39 



Falciform ligament, 18 

 Fins, 8 



Foramen magnum, 51 

 Forebrain, 42 

 Form, 6 



Gall bladder, 16, 17 

 Gastrosplenic mesentery, 18 

 GiU, 12 



Gill-arch, 13, 51 

 Gill-filaments, 12 

 Gill rays, 13 

 Gill-slits, 8, 9, 12 

 Girdle, pectoral, 51 



pelvic, 49 

 Gland, oviducal, 22 



rectal, 16 



thyroid, 16 



Habenula, 47 

 Head, 8 

 Heart, 24 



external aspect, 25 



internal aspect, 31 



valves, 32 

 Hepatic duct, 17 

 Hepatoduodenal mesentery, 18 

 Hindbrain, 42 

 Homology, 10 

 Humor, aqueous, 40 



vitreous, 40 

 Hyoid, 51 

 Hyomandibular, 51 

 Hypophysis, 47 



Iliac processes, 49 

 Infraorbital nerve, 40 

 Infundibulum, 47 

 Integumentary sense organs, 37 

 Intercalary arch, 49 

 Intestine, 16 

 Iris, 40 

 Ischiopubic bar, 49 



Jaws, 9, 12 



Key to the skates, 4 

 Kidney, 19 



