INDEX. 



439 



Stenogyra, 191. 

 Stenogyra docollata, 192. 

 };rncillinin, 195. 

 octona, 196. 

 octonoidcs, 194. 

 subula, 195. 

 Stenostoma convexa, 4.'{2. 

 Stcnotrcma, '290. See Helix. 

 Stenotrciua convexa, 432. 

 Striatura, 119. 

 Strobila, 258. 

 Strophia, 219. 

 Strophia incana, 220. 

 Succinea, 414. 

 Succinea amphibia, 430. 



aperta, 430. 



aurea, 422. 



avara, 420. 



campestris, 426. 



cinp:ulata, 21. 



citrina, 419. 



Concordialis, 418. 



Decampii, 417. 



effusa, 429. 



Forsheyi, 431. 



Gabbii, 429. 



Greerii, 424. 



Groenlandica, 423. 



Grosvenorii, 431. 



Haleana, 430. 



Halei, 430. 



Hawkinsii, 427. 



Hay den i, 415. 



Higginsi, 418. 



inflata, 427. 



lineata, 420, 424. 



luteola, 419. 



Mooresiana, 430. 



miinita, 419. 



Nuttalliana, 428. 



obliqua, 423. 



oblonga, 430. 



Oregonensis, 428. 



ovalis, 417. 



pellucida, 430. 



putris, 430. 



retusa, 416. 



rusticana, 427. 



Salleana, 429. 



Sillimani, 416. 



Stretchiana, 422. 



Texasiana, 419. 



Totteniana, 425. 



unicolor, 427. 



vermeta, 421, 430. 



Verrilli, 422. 



Wardiana, 421. 



Succinea Wilsoni, 431. 



Tachea, 377. 



Tebcnnopliorua, 179. 



Tebennophorus bilincatus, 184. 



Carolinicnsis, 181, 

 dorsalis, 184. 



Testacella , 87. 



haliotoidea, 87. 



Testacina, 153. 



Toxostoma globularis, 432. 



Toxotrema complanata, 432, 

 globularis, 432. 



Triodopsis, 301. JSee 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. * 



Angelica;, 137. 



exilis, 138. 



latissima, 136. 



limpida, 136. 



obliqua, 139. 



pellucida, 136. 



pfeifFeri, 138. 



Xolotrema clausa, 307. 

 lunula, 432. 

 triodopsis, 432. 



Zilotea, 153. 

 Zolotrema, 432. 

 Zonites, 94. See Helix. 



