INDEX 



607 



Cleiothyris, dorsal beak in, 264. 

 Cleistopora (jeometrica, size and develop- 

 ment of cells in, 430. 

 climbing plants, prickles on, 90. 

 Cliothi/ris Royssii, spinules in, 51. 

 Clitamhonites, 245. 



dorsal fissure in, 263. 

 Clorinda, 245. 



fornicata, 315. 

 Ccelospira, 245. 



Barrandei, brachial supports in, 

 416. 



disparilis, 369. 



marginalis, brachial supports in, 

 416. 



mature condition in, 417. 

 Canothyris, 245, 307. 

 Ccerostris mitralis mimicking woody 



excrescence, Peckham, 61. 

 Colivina pygmcca, spines in, 44. 

 Columnopora, 428. 

 Conchidium, 245. 

 Conocephalites, 140. 

 Conocoryphe, 129, 139, 140, 153, 178. 



(Bailiella) Bailey i, 178. 



cephalon of, 128. 



eye-line in, 223. 



glabella in, 141, 182. 

 Conocoryphidse, 128, 129, 131, 139, 140, 

 141, 152, 153. 



aflBnities of Harpides with, 137. 



defined, 140. 

 Conolichas, 149, 150. 



glabella in, 150. 



third segment in, 127. 

 Conophrys, 133. 

 Conotreta, 231, 244. 

 Cope, E. D., bathmic force of, 29. 



culmination and descent of Echino- 

 dermata, 26. 



on variation, 6. 



ossification of superior cranial walls 

 in toads and frogs, 47. 

 Copepoda, 114. 



respiration in, 218. 

 Copridaj, protective horns in males of, 



Wallace, 60. 

 coral, development of a Paleozoic po- 

 riferous, 421. 

 corals, corallites in compound, 45. 



external differentiation of struc- 

 tures of, into spines, 50. 



Paleozoic, 421. 



spines on corallites in compound, 



HaU, 45. 

 Waldron, 313. 

 Corda, A. J. C, classification of trilo- 

 bites. 111. 



generic and specific names for dif- 

 ferent stages of growth of Sao 

 hirsuta, 166. 

 generic names for forms of Agnos- 

 tus, 136. 

 Cordania, 148. 



fixed-cheeks in, 148. 

 Cornutella hexagona, terminal spine in, 



44. 

 Coronura, 156, 157. 



accessory lobes in glabella of, 157. 

 diurus, 157. 

 myrmecophorus, 157. 

 Corycephalus, 156, 157. 



notched cephalon in, 157. 

 Corynexochus, 142. 

 cow, growth of horns of, 10. 

 crab, common, zoea of, 56. 



horse-shoe, development of anterior 

 legs in, 84. 

 spines in, 22. 

 tail spine in, 84. 

 crabs, cephalothorax in, 84. 

 Crania, 231, 239, 244, 284, 387. 

 anal opening in recent, 264. 

 arms of, 276. 



difference in valves in, 234, 235, 236. 

 pedicle-opening in, 241. 

 setifcra, 314. 

 siluriana, 314. 



discussion of, 317. 

 spinigera, 314. 

 tentacles in, 275. 

 Cranias, Waldron, 313. 

 Craniella, 231, 244. 

 Craniscus, 244. 

 Crepicephalus, 142, 145. 

 Ceratopyge, 145. 

 Crinoidea, compound spines in, 68. 



development of tubercles of, into 

 spines, Wachsmuthand Springer, 

 50. 

 immature forms of, Waldron, 313. 

 smooth surface in early, 25. 

 spines on ventral sacs of, Wachs- 

 muth and Springer, 45. 



