616 



INDEX 



principles of a natural classification, 



119, 120. 



secondary characters in Cephal- 

 opoda, 266. 



value of stages of growth and de- 

 cline in Brachiopoda, 229. 

 Hydnoceras nodosum, 50. 

 phymatodes, 50. 

 tuberosum, 49, 50. 

 Hydrocephalus, 143, 177, 178. 



car ens, 177. 

 Hydrolenus, 146. 



Hymenactura copernici, spines in, 44. 

 hypertrophy a result of abundant nu- 

 trition, 64. 



in Crustacea, results of, Packard, 38. 

 Hypoparia, 124, 129, 132, 134, 139. 



defined, 134. 

 hypostoma of Triarthrus, 208. 



ichthyosis, Gould and Pyle, 92. 

 Iguanodon bernissartensis, suppressed 



first digit in, 85. 

 Illsenidse, 146. 

 Illcenopsis, 146. 



eyes in, 147. 

 Illcenurus, 146. 

 Illainus, 129, 146. 



eyes in, 147. 



free-cheeks in, 1 24. 



(Octillcenus) Hisingeri, spiniform 

 pleural extremities of, 79. 



pleural spines in, 80. 



smooth glabella in, 126. 

 Inarticulata, anal opening in, 264. 



Huxley, 242. 

 Infusoria, terminal spiniform processes 



in, 45. 



Insecta, Packard, 38. 

 insects, mimetic forms of, 61. 



reduction in limbs of, 83. 



simple cuticles in embryonic stages 

 of, 19. 



spines in larval stages of, 19, 



spinous prominences on test of, 9. 

 intensity, numerical, Gratacap, 35. 

 Iphidea, 232, 233, 243, 267, 286, 287. 



possible absence of trocholophus 

 stage in, 278. 



taxolophian brachial structure in 



adult, 277. 



Ismenia, 245, 288, 300, 301, 303, 304, 

 306, 307, 308. 

 adult loop in, 291. 

 attachment of loop in, 292. 

 gwyniform stage in, 302. 



and cistelliform stages in, 288. 

 ismeniform stage, 298. 

 Isocolus, 133. 



Isopoda, simple antennule in, 205. 

 Isotelus, 146. 

 itch-mite, suppression of limbs in, 83. 



Jackson, R. T., classification of stages 

 of growth and decline, 248. 



evolution of Gammarus in Lake 



Baikal, 36. 



law of radial symmetry, 236. 

 localized stages of growth, 16. 

 observations made upon the oyster 



and its allies, 237. 

 phylembryo in trilobites, 121. 

 phylogeny of the Pelecypoda, 23. 

 prodissoconch of pelecypods, 231. 

 spines in Mollusca, 51. 

 value of stages of growth and de- 

 cline in Brachiopoda, 229. 

 Joubin, L., brachiopods an independent 



class, 254, 

 Juvavella, 306, 411. 



K 



Kampylopegmata, 242, 290. 

 Karpinskya, 245. 

 Kayseria, 245, 283. 

 Kayserlingia, 244. 



Kerner von Marilann, A., barbed spines, 

 etc., on thicket plants, 88. 



leaves in a tropical Bignonia, 89, 



90. 

 length of stems in climbing palm, 



88. 

 number of species of climbing 



plants, 87. 

 kinetogenesis, 6. 

 King, W., dorsal foramen in some 



