606 



INDEX 



chaetopods, 254. 



Chamceleon Oiveni, horns in male, 59, 60. 



Chamseleontidae, horns in male, Darwin, 



59. 

 Chapman, E. J., classification of trilo- 



bites, 113, 

 characteristics, inherited, Hyatt, 100. 

 Chariocephalus, 142. 

 Chasmops, 129, 156, 157. 



accessory lobes in glabella of, 157. 

 third segment in, 127. 

 Cheiruridte, 129, 131, 152, 153. 



defined, 155. 

 Cheirurus, 129, 155, 156. 



fourth annulation iu, 127. 

 geual angles in, 123. 

 insii/nis, spiuiform processes in, 78, 

 79. 

 chilidium, 257. 

 Chilomi/cterus geometricus, protective 



spines in, 55. 

 Chonetes, 231, 245, 395. 



absence of straight hinge-line in 



young, 268. 

 nova-scoticus, 315. 

 pedicle-opening in, 241. 

 spines in, 96. 

 undulatus, 315. 

 cirri, alternating, in adultlophophore of 



Brachiopoda, Hancock, 275. 

 Cirripedia, 114. 



respiration in, 218. 

 Cirsium korridulum, spiniform bracts in, 

 75. 



* lanceolatum, spiniform bracts in, 75. 

 Cistella, 231, 238, 245, 246, 247, 260, 271, 

 288, 292, 297, 300, 303, 307, 308, 408, 

 409. 

 adult loop in, 291. 

 archenteron in, 248. 

 arm development in, Kovalevski, 



274. 

 attachment of, 256. 

 blastula cavity in, 248. 

 cephalula of, 260, 261. 



stage ill, 249. 

 cistellula, adult lophophore in, 279. 

 deltidial plates in, 395. 

 dovelupment of, 254. 

 difference in valves in, 234, 235. 

 early nepionic shell of, 261. 

 eyes in, 249. 



gwyniform stage in, 288, 302. 

 lophophore in, 279. 



adult, 275. 

 mantle in, 253. 

 mesembryo of, 248, 249. 

 metembryo in, 248. 

 neapolitana, embryonic stages of, 

 248, 249, 250. 

 Kovalevski, 407. 

 lamella; of loop iu, 271. 

 lophophore in, 279. 

 neoembryo of, 249, 250. 

 nodes and ridges on, and pedicle in, 



305. 

 outline and hinge of, 238. 

 paragerontic development in, 271. 

 pedicle in, 235. 

 phylembryo in, 254. 

 protegulum in, Kovalevski, 231. 

 protembryo of, 248. 

 protembryonic stages in, 248. 

 researches on, Kovalevski, 257. 

 schizolophus stage in, 278. 

 tentacles in, Kovalevski, 275. 

 in young stages of, 275. 

 of taxolophus in, 277. 

 tentacular multiplication in, Kova- 

 levski, 407. 

 trocholophus stage in, 278. 

 typembryo of, 250, 251, 261. 

 variations in, 78. 

 Cladocera, respiration in, 218. 

 Cladochonus, 425. 

 Clarke, J. M., on Acidaspis, 151. 



An/cs consanguineus from the Lower 



Helderberg Group, 174. 

 development of deltidium, 263. 

 development of pedicle-opening, 



240. 

 gerontic period in Brachiopoda, 

 269. 

 claspers, 88. 



classification of corals, importance of 

 tabulic in a natural, Verrill, 427. 

 of trilobites, 109. 

 ontogeny a standard of, L. Agassiz, 



120. 

 principles of a natural, 119. 

 Hyatt, 120. 

 Claus, C, nauplius of Crustacea, 190. 

 Clavatula viitra, spiuiform prominences 

 on, 46. 



