366 INDEX-GLOSSARY. 



Centrosoma A specialized part of the cell protoplasm which probably 



determines the division of the nucleus, 73. 

 Centrum The body of a vertebra, 158, 184. 

 Cephalochorda, 341, 135. 

 Cephalothorax, 83, 86. 

 Geratodus, 153. 

 Cercaria, in the Fluke The free tadpole-like stage which, after losing its 



tail, becomes the adult, 36, 38. 

 Cercaria, 338. 



Cere (cera, wax), in the Pigeon A bare patch near each external naris, 229. 

 Cerebellum A dorsal outgrowth of the hind -brain, 169, 211, 253, 254, 302, 



337, 339. 

 Cerebral hemispheres Lateral hollow outgrowths of fore-brain, 169, 210, 



216, 253, 254, 301, 333. 

 Cerebro-spinal axis Scy Ilium, 168; Rana, 209; Columba, 252; Lepus, 300; 



Homo, 333. 

 Cervical groove, 86. 



Chaetopoda (xiTfj, hair ; TTOUS, TTOOOS, a foot), 340. 

 Chalaza (x^a<X hail), in the Bird's egg A cord-like structure traversing 



the white at either end, 256. 



Chamber Branchial, 111; Cloacal, 112; Supra-branchial, 111, 117. 

 Cheiroptera, 346, 356. 



Chelate (xn^i, a cloven hoof, a claw) Provided with pincers (chelse), 87. 

 Chiasma, optic (xio"/ia, the mark of the letter x) The X-shaped structure 



formed by the crossing of the optic nerves on the ventral surface of the 



thalamencephalon, 169, 211, 253, 302. 

 Chick, 256-268. 

 Chimpanzee, 338. 

 China, 349. 

 Chiriqui, 349. 

 Chloragogen, 57, 61. 

 Chlorophyll (x^wpos, green ; 0uX\oi/, a leaf) The characteristic green 



colouring matter of plants, 14, 22, 44. 



Chondrocranium (x'"<Vo s , a cartilage; cranium) The cartilaginous ground- 

 work of the skull ; the primordial cranium, 179, 232. 

 Chordinse tendincse Firm bands of connective tissue uniting the flaps of an 



auriculo-ventricular valve with the wall of the ventricle, 245, 288. 

 Chordata (xP$V, a string), 341 ; 3 ; Chap, vii., 134, et stq. 

 Chorion, 338. 

 Choroid (yopiov, skin, membrane ; t<5o9, to-, appearance), 174, 221 ; c. 



plexus, 210. 

 Chromatin (xpuna-nvos, coloured) The more deeply staining part of a 



nucleus, 8, 73. 



