606 



INDEX 



chaetopods, 254. 



Chamcdeon Oweni, horns in male, 59, 60. 



Chamaeleontidse, 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. 

 Cheiruridas, 129, 131, 152, 153. 



defined, 155. 

 Cheirurus, 129, 155, 156. 



fourth annulation in, 127. 



genal angles in, 123. 



insignis, spiniform processes in, 78, 



79. 



chilidium, 257. 

 Chilomycterus 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 adult lophophore of 



Brachiopoda, Hancock, 275. 

 Cirripedia, 114. 



respiration in, 218. 



Cirsium horridulum, 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 in, 249. 



cistellula, adult lophophore in, 279. 

 deltidial plates in, 395. 

 development 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. 

 lamellae of loop in, 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. 



Arges 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 

 tabulae 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 mitra, spiniform prominences 

 on, 46. 



