INDEX 



613 



of loop in Macandrevia cranium 

 and Dallina stptiiicra, 292. 

 transformations in Dallina septigera, 

 298. 

 frustule of Atthei/a decora, spine growth 

 from, 43. 



of Staurastrum cuspidatum, spine 



growth from, 43. 

 of Xanthidium armatum and Anthro- 

 desmus octocomis, spiue growth 

 from, 43. 

 fundus of Difflugia acuminata, spines 

 on, 43. 



corona, spines on, 43. 

 constricta, spines on, 43. 

 Fusus colus, spiniform prominences on, 

 46. 



Gammarus, evolution of, in Lake Baikal, 

 Jackson, 36. 

 specific development of, in Lake 

 Baikal, Dybowsky, 64, 6.5. 

 Gasteropegmata, 242. 

 Gastropoda, conical non-coiled, spine 

 development in, 14. 

 development of spines in, 14. 

 immature forms of, Waldron, 313. 

 protoconch in, 122. 

 spines in, Hall, 51. 



young, 57. 

 spiniform prominences on, 46. 

 gastropod.i, Waldron, 313. 

 Gecarcinus ruricola, spiniferous ridges 



on, 52. 

 Geddes, P., decline of vitality in thorny 

 plants, 97. 



on ebbing vitality, 1 2. 

 ■ Gegenbaur, C, classification of trilo- 

 bites, 114. 

 functions of respiration and loco- 

 motion, 218. 

 Gelasimics princeps, spiniferous ridges 



on, 52. 

 genetic sequence in forms of Brachiop- 



oda, 24. 

 geometrid moths, spines on larvae of, 



Packard, 46. 

 Gerasaphes, 146. 



gerontic stage of brachiopods, 248. 

 of trilobites, 121. 



Gilbertsocrinus tuberosus, spines in, 50. 

 giraffe, accelerated development of 

 horns in, 22. 



bom with horns, 19. 

 production of horns in, 13. 

 Glassia, 245, 416. 

 Globigerina bulloides, pelagic forms of, 



66. 

 Glossina, 243. 

 Glossothi/ris, 307. 

 Glottidia, 231, 243, 247, 255, 256. 

 albida, nepionic stage in, 267. 

 arm development in. Brooks, 274. 

 growth of spiral arms in. Brooks, 



282. 

 incipient stage of. Brooks, 386. 

 later larval stages of, Brooks, 246. 

 lophopbore in, 282. 

 pedicle in, 251. 

 protegulum in, 234. 

 pyramidata, lophophore in, 282. 

 schizolophus stage in, 278. 

 tentacles in, 274, 275. 

 tentacular multiplication in. Brooks, 



407. 

 trocholophus stage in, 278. 

 Goldfuss, A., classification of trilobites, 



111. 

 Goldius, 149. 

 Goniatites discoideum, 436. 



uniangulare, 435. 

 Gould and Pyle, ichthyosis, 92. 

 graptolites, apertural spines on, Nichol- 

 son and Lydekker, 45. 

 Graptolithus quadrimucronatus, apertu- 

 ral spines on, 45. 

 Gratacap, L. P., numerical intensity, 35. 



Zoic maxima, 35. 

 Gray, A., summer shoots of barberry, 

 12. 

 J. B., classification of Brachiopoda, 

 290. 

 Griffithides, 148. 

 eyes in, 148. 

 fixed-cheeks in, 148. 

 glabella in, 148. 

 growth, conditions or forces affecting, 

 31. 



force, deficiency of, 31, 39, 41. 



energy of, 31, 34, 38. 

 localized stages of, 14. 

 Jackson, 16. 



