INDEX 



489 



Solenogastres, 321. 

 Solenomya, 405, 423. 



S. borealis, 405, 423. 



S. velum. 405, 423. 

 Solenomyidae, 405, 423. 

 Somite, 243. 

 Sow-bugs, 291. 

 Spatangoidae, 217, 226. 

 Spatangoidea, 217, 226. 

 Species, 20. 

 Specific name, 28. 

 Sphacelaria, 62, 65. 



S. cirrhosa, 62, 65. 



S. radicans, 62, 65. 

 Sphacelariaceae, 62, 65. 

 Sphaeoplea annulina, 37. 

 Sphseridia, 219. 

 Sphaerococceae, 77, 84. 

 Sphaeroma, 242, 293. 



S. destructor, 293. 



S. quadridentatuir, 24?, 



293. 



Spicules, 102. 

 Spider-crabs, 241, 284. 

 Spines, 201, 205, 221. 

 Spionidae, 161, 181. 

 Spire, 304. 

 Spirorbis, 8, 12, 162, 185. 



S. borealis, 162, 185. 

 Spirula, 464, 467, 468. 

 Spirulina, 48, 49. 

 Sponges, 100, 101. 

 Spongia, 104. 



S. graminea, 109. 

 Spongidae, 100. 

 Spongillidas, 104. 

 Spongin, 102. 

 Spring-tides, 13, 15. 

 Spyridia, 78, 92. 



S. filamentosa, 78, 92. 

 Squamarieae, 78, 95. 

 Squame, 243. 

 Squids, 464. 

 Squilla, 241, 288. 



S. empusa, 241, 288. 

 Starfishes, 43, 114, 200, 203, 204, 



205, 434. 

 Station and habits of the Mol- 



lusca, 313. 



Stauromedusae, 133, 136. 

 Stelosponginae, 100. 

 Sternograrnme, 76, 82. 



S. interrupta, 76, 82. 

 Sternorhynchus, 241, 286. 



S. Sagittarius, 241, 286. 

 Stomatopoda, 241, 288. 

 Stone-canal, 201, 203. 

 Stone-crab, 280. 

 Stony corals, 112, 115, 146. 

 Strise, 344. 

 Strobila, 135, 138. 

 Strombidae, 326, 375. 

 Strombus, 10, 311, 326, 376. 



S. alatus, 376. 



S. gigas, 326, 376, 431. 



S. pugilis, 326, 376. 

 Strongylocentrotus, 217, 223. 



S. drobachiensis, 41, 43, 

 217, 223. 



S. franciscanus, 217, 223. 



S. purpuratus, 217, 221, 



223. 

 Structure of mollusks, 315. 



Stylochopsis, 160, 166. 



S. littoralis, 160, 166. 

 Suberites, 100, 106. 



S. compacta, 100, 106. 

 Suberitidae, 100. 

 Suborders, 29. 

 Subumbrella, 120. 

 Suckers, 201, 203. 

 Sun-jellies, 134, 138. 

 Suture, 304, 344. 

 Swimming-bell, 120. 

 Swimming crabs, 241. 

 Syconidae, 100. 

 Syllidas, 161, 173. 

 Symmetry, 328. 

 Synapta, 228, 229, 233. 



S. roseola, 228, 233. 



S. rotifera, 228, 233. 



S. tenuis, 228, 233. 



S. viviparia, 231. 



Table : Classification of algae 

 Blue-green, 48. 

 Brown, 62. 

 Grass-green, 51. 

 Red, 76. 



Classification of 

 Actinozoa, 141. 

 Arthropoda, 238. 

 Asteroidea. 304. 

 Cephalopoda, 464. 

 Chcrdata, 472. 

 Ctenophora, 154. 

 Echinoidea, 317. 

 Holothuroidea, 238. 

 Hydrozoa, 116. 

 Mullusca, 300. 

 Molluscoida, 188. 

 Ophiuroidea, 213. 

 Pelecypoda, 409. 

 Porifera, 100. 

 Scyphozoa, 133. 

 Tagelus, 310, 407, 459. 

 T. gibbus, 407, 459. 

 Talitrus longicornis, 289. 

 Talorchestia, 242, 289. 

 T. longicornis, 242, 289. 

 T. megalophthalma, ago. 

 Taonia, 63, 71. 



T. atomaria, 63, 71. 

 Tapes, 406, 451. 

 T. laciniata, 406, 451. 

 T. staminea, 406, 451. 

 Tealia crassiformis, 145. 

 Tectarius, 311, 326, 373. 

 T. muricatus, 326. 

 T. nodulosus, 326, 373. 

 Tectibranchiata, 300, 324, 350. 

 Tedania, 100, 107. 

 Teeth, 304, 417, 418. 

 Cardinal, 418. 

 Lateral, 418. 

 Tellina, 311, 406, 443. 

 T. alternate, 406, 444. 

 T. bodegensis, 406, 444. 

 T. radiata, 406, 443, 444. 

 T. tenera. 406, 444. 

 Tellinidae, 406, 443. 

 Telson, 243, 347. 

 Tentaculocysts, 135. 



Terebellidae, 161, 182. 

 Teredinidae, 407, 462. 

 Teredo, 407, 463. 



T. navalis, 13, 407, 462. 

 Terga, 254. 



Terms used in describing Crus- 

 tacea, 343. 



Echinoderms, 301. 



Hydroids, 118. 



Mollusks, 302. 



Polyzoa, 190. 

 Testaceous, 304. 

 Tetrabranchiata, 301, 464, 



467- 

 Tetrastemma, 160, 169. 



T. arenicola, 160, 169. 

 Thalassiophyllum, 36,68. 70. 

 Thaliacea, 472. 

 Thallophytes, 25. 

 Thallus, 26. 

 Thelepsus, 161, 182. 



T. cincinnatus, 161, 183. 

 Thorax, 243, 346. 

 Thracia, 309. 

 Thyone, 228, 231. 



T. briareus, 228, 231. 

 Tima, 128. 



T. formosa, 116, 128. 

 Tivela, 406, 410, 450. 



T. crassatelloides, 406, 450. 

 Toad-crab, 285. 

 Toxopneustes, 217, 224. 



T. variegatus, 217, 234. 

 Trachylinse, 117, 120, 138. 

 Trachymedusee, 117, 128. 

 Trachynema, 128. 



T. digitale, 117, 128. 

 Transatlantic province, 309. 

 Trematoda, 160. 

 Trichodesmium, 33. 

 Trichotropis, 309. 

 Tricladida, 160, 166. 

 Triclads, 166. 

 Tridacna gigas, 313, 419. 

 Triforis, 374. 

 Tritonidea, 327, 394. 



T. tincta, 327, 394. 

 Trivia, 326, 378. 



T. califormca, 326, 379. 



T. pediculus, 326, 378. 



T. quadripunctata,326,379. 



T. solandri, 326, 379. 



T. spadacea, 379. 

 Trochidae, 325, 359. 

 Trochiscus, 325, 362. 



T. norrisi, 325, 362. 

 Trophon, 309, 326, 383. 



T. clathratus, 326. 383. 

 Tube-feet, 203. 

 Tubicola, 161, 172. 

 Tuhicolous worms, 180. 

 Tubipora, 141, 147, 151. 

 Tubularia, 116. 



T. Couthouyi, 116, 123. 



T. indivisa. 116. 

 Tubularians, 116, 121, 122. 

 Tubulipora, 188, 194. 



T. flabellaris, 188, 194. 

 Tunicata, 472. 474. 

 Tunicateg, 474. 

 Turbellaria, ICO, 165. 

 Turhinato, 304. 

 Turbincllidae, 327, 394. 



