INDEX. 



523 



Planorbis — Continued. 



cainpanulatiis, 492. 



dettectus, 494. 



dilatatus, 498. 



c'k'vatus, 497. 



cxacutiis, 495. 



hirsutus, 493. 



Icntus, 490. 



parvus, 497. 



tiivolvis, 488. 

 Plcurotoina bicarinata, 349. 



decicssata, 354. 



plicata, 350. 

 Polycei'a Lejisonii, 226. 

 Poinatiopsis lapidaria, 295. 

 Pupa annifera, 437. 



biulia, 433. 



contracta, 438. 



coiticaiia, 439. 



curvideus, 434. 



decora, 435. 



exigua, 466. 



faliax, 436. 



Hoppii, 433. 



viiUiun, 441. 



modesta, 442. 



muscoruin, 433. 



pentodon, 434. 



rupicola, 439. 



simplex, 4-14. 

 Purpura lapillus, 360. 

 Psyche globulosa, 504. 

 Pi/ramis striatuia, 33.3. 

 Pyiala. See Busycon. 



E. 



Ranella caudata, 386. 

 llhyuchoiieila psittacea, 210. 

 Kissoa aculeus, 299. 



carinata, 301. 



eburnea, 297. 



exarata, 301. 



latior, 299. 



Mi-:helsi, 301. 



minuta, 298. 



multilineata, .300. 

 Rissoella eburnea, 297. 



sulcosa, 297. 

 Rostellaria occidentalis, 320. 



s. 



Salpa Caboti, 6. 

 Sanyuino/aria fusca, 93. 



sordida, 95. 

 Saxicava arctica, 86. 



distorta, 87. 



rufjosa, 87. 

 Scalaria Grcenlandica, 314. 



liiieata, 312. 



multistriata, 313. 



Novanglite, 311. 

 Scaphander puiictostriatus, 215. 



Scgmcntina armigera, 499. 

 Sigaretus haliotoideus, 337. 

 Skenea planorbis, 296. 



serpuloicles, 296. 

 Solecurtus Caribfeus, 43. 



dicLsus, 44. 

 frn(]iHs, 44. 



gil)bus, 43. 

 Solemya borcalis, 50. 



velum, 48. 

 Solen Americanus, 42. 



ensis, 40. 

 Sphajrium occidentale, 108. 



partumeium, 103. 



rhomboideuni, 104. 



securis, 107. 



simile, 101. 



tenue, 107. 



truncatum, 106. 



Vermontanum, 105. 

 Spinalis Flemingii, 505. 



Gonldii, .505. 

 Spirula frag His , 516. 



Peronii, 516. 

 Succinea avara, 446, 



obli((ua, 447. 



ovalis, 445. 



Totteuiana, 448. 



Tapes fluctuosa, 136. 

 Tebennophorus Carolinensis, 457. 



dorsalis, 460. 

 Tectura alveus, 269. 



testudinalis, 269. 

 Tellina tenera, 97. 



tenta, 96. 

 Terebratula caputserpentis, 208. 



psittacea, 210. 

 Terebratulina caputserpentis, 208. 

 Teredo chlorotica, 33. 



dilatata, 32. 



megotara, 30., 



navalis, 28. 



Norvagica, 29. 



Thomsonii, 31. 

 Thracia Conradi, 69. 



myopsis, 71. 



truncata, 72. 

 Thyasira Gouldii, 100. 

 Tornatella punctostriata, 224. 

 Trichotropis borealis, 390. 

 Triforis nigrocinctus, 323. 

 Tiochus occidentalis, 286. 

 Trophon chxthratus, 377. 



muricatus, 379. 



scalariformis, 378. 

 Turbonilla interrupta, 331. 



nivea, 331. 

 Turritella acicula, 319. 



costulata, 318. 



erosa, 317. 



iinpressa, 330. 



