INDEX. 



439 



Stenogyra, 191. 

 Stenogyra decollata, 192. 

 gracillima, 195. 

 octona, 196. 

 octonoides, 194. 

 subula, 195. 

 Stenostoma convexa, 432. 

 Stenotrema, 290. See Helix. 

 Stenotrcma coiivexa, 432. 

 Striatum, 119. 

 Strobila, 258. 

 Strophia, 219. 

 Strophia ineana, 220. 

 Succinca, 414. 

 Succinea amphibia, 430. 



aperta, 430. 



aurea, 422. 



avara, 420. 



campestris, 426. 



cingulata, 21. 



citrina, 419. 



Concordialis, 418. 



Decampii, 417. 



effusa, 429. 



Eorsheyi, 431. 



Gabbii, 429. 



Greerii, 424. 



Grcenlandica, 423. 



Grosvenorii, 431. 



Haleana, 430. 



Halei, 430. 



Hawkinsii, 427. 



Haydeni, 415. 



Higginsi, 418. 



inflata, 427. 



lineata, 420, 424. 



luteola, 419. 



Mooresiana, 430. 



munita, 419. 



Nuttalliana, 428. 



obliqua, 423. 



oblonga, 430. 



Oregonensis, 428. 



ovalis, 417. 



pellacida, 430. 



putris, 430. 



retusa, 416. 



rusticana, 427. 



Salleana, 429. 



Sillimani, 416. 



Stretcbiana, 422. 



Texasiana, 419. 



Totteniana, 425. 



unicolor, 427. 



vermeta, 421, 430. 



Verrilli, 422. 



Wardiana, 421. 



Succinea Wilsoni, 431. 



Tachea, 377. 

 Tebennophorus, 179. 

 Tebennophorus bilincatus, 184. 



Caroliniensis, 181. 

 dorsalis, 184. 



Testacella , 87. 



haliotoidea, 87. 

 Testaeina, 153. 

 Toxostoma globularis, 432. 

 Toxotrema com{)lanata, 432. 



globularis, 432. 

 Triodopsis, 301. See Helix. 

 Triodopsis lunula, 308, 432. 

 Trophodon, 432. 

 Turricula, 349. 



Urcinella, 153. 



Vaginulus flexuolaris, 244. 

 floridanus, 241. 

 fuscus, 244. 

 oxyurus, 244. 

 quadrilus, 244. 

 Vallonia, 343. See Helix. 

 Veronicella, 240. 

 Veronicella Floridana, 241. 



olivacea, 243. 

 Vertigo, 213. 

 Vertigo Bollesiana, 215. 



Gouldii, 214. 



milium, 214. 



ovata, 216. 



pentodon, 200. 



rupicola, 208. 



simplex, 219. 



tridentata, 217. 



ventricosa, 218. 

 Vitrina, 135. 

 Vitrina Americana, 137. 



Angelicas, 137. 



exilis, 138. 



latissima, 136. 



limpida, 1.36. 



obliqua, 139. 



pellucida, 136. 



pfeifferi, 138. 



Xolotrema elausa, 307. 

 lunula, 432. 

 triodopsis, 432. 



Zilotea, 153. 

 Zolotrcma, 432. 

 Zonites, 94. *SVe Helix. 



