Index. 



Tubipora flabellaris, 247. 



Tubulipora, 246; kev to species of, 

 247. 

 fimbria forma pulchra, 250. 

 oeeidentalis, 247, 249. 

 paeifiea. 247. 248. 

 pulchra, 247, 250. 



Tubuliporidae, 245; key to gen- 

 era of, 245. 



Undeuchaeta bispinosa, 314, 318. 

 incisa, 314, 319. 



Unicavea californica, 261. 

 radiata, 262. 



Uniserial type of Crisia, 230. 



United States Bureau of Fisher- 

 ies, 356. 



Uterus, iu Gyrocotyle, 397. 



Vagina, in Gyrocotyle, 399. 



Van Beneden, cited, 359. 



Variation, infra-individual, S7; 

 meristic and substantive, 

 81; test of homology, 82; 

 in Halocynthia johnsoni: 

 statistics of, 75; tables of, 

 76; values from table, 1, 76. 



Velocity, water, 200; wind. 200. 



Venus. 364. 



Vitellaria, in Gyrocotvle, 396, 

 403. 



Von Drasche, R., cited, 6, 69. 97. 



Wagener, G.. cited, 357, 35S, 362, 

 371, 372, 374, 388. 407, 409, 

 422, 424. 



Wageneria, 354. 



Wallace, A. R., cited. 293. 



Warning coloration, 302. 



Water, of San Diego bay. its 

 properties. 92, 201 ; of 

 Puget Sound, 92; velocity 



of, 200. 

 See Bottom. Cold, Density, In- 

 termediate, Ocean, Sea, 

 Surface, Temperatures. 



Waters, A. W., cited. 226, 268. 



Watson, Edna E.. 353. 



Weight of Developing Eggs. 1; 

 before segmentation, 2; 

 practicability of determin- 

 ations, 5; significance of 

 investigations, 1. 



White markings, in arboreal 

 species. 297; in birds of the 

 open. 295; in warblers, 305; 

 bibliography, 311; distrib- 

 ution of among birds, 301; 

 as visual clues, 289. 



White patterns, as affected by 

 sexual selection, 308; dis- 

 ruptive effect of, 303. 



Whiteaves, J. F., cited, 258, 268. 



Whitney, A. W., 147. 



Willey, A., cited, 79. 



Wilmington Bay, ascidian species 

 in, 66. 



Wind velocity. 200. 



Xanthoealanus pulcher, 314, 325. 

 tectus, 314. 324. 



Yolk-ducts, in Gyrocotyle, 396; 

 yolk-nucleolus, 403. 



Zooecia, fertile. 227. 



Zooids, of Salpa chain, arrange- 

 ment of, 149; growth of, 

 146, 155; nournishment of. 

 156, 161; quantitative rela- 

 tion, 149. 



Zygodactyla coerulesct n$, 28. 



Zygophiurae, 34. 



ERRATA. 

 Page IS, For Gen. Tiaropsidium n. gen. read Gen. Tiaropsis. subgen. Tia- 



ropsidium n. subgen. 

 Page 19, line 2. For genera read subgenera. 

 Page 22. line 9. For brownei read diegensis. 



Page 43. For Amphiura verrili sp. nov., read Amphiura diastata sp, nov. 

 Page 56, For Amphiura verrilli sp. nov.. read Amphiura diastata sp. nov. 



Explanation of pi. 2, fig. S. For Ophuira read Ophiura. 

 Page 64, Explanation of pi. 6, fig. 32. For Ophuira read Ophuria. 

 Page 142, Explanation of pi. 16. For Fig. 31, read Fig. 32. 

 Page 169, line 14. For Ceratphyllum read Ceratophyllum. 

 Page 177. line 17. For The read This. 

 Page 178, line 9. For seeds read needs. 



Page 182, line 3 from bottom. For Gonyaulaux read Gonyaulax. 

 Page 183, line 15. For posterodorsal read postero-dorsal. 

 Page 195. line 7. For 1.02591 read 1.02481. 



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