434 



INDEX. 



Bulimus Nebrascensis, 400. 



neglectus, 399. 



nitelinus, 394. 



obscurus, 212. 



octona, 399. 



octonoitles, 194. 



pallidior, 20. 



perversus, 400. 



radiatus, 399. 



reses, 409. 



spirifer, 20. 



striatus, «4. 



subeylindricus, 188. 



subula, 194. 



teres, 400. 



undatus, 408. 



urceus, 410. 



vegetus = pallidior, 20. 



venosus, 395. 



vermetus, 399. 



vermieulus, 400. 



vesicalis = sufBatns. 



vexillum, 404. 



virgulatus, 395. 



Xanthostoraus, 391. 



zebra, 408. 



Ziebmanni, 394. 

 Bulla truncata, 84. 



Carocolla. See Helix. 

 Chimotrema plauiuseula, 432. 

 Cionella acicula, 190. 



subcylindrica, 188. 

 Clausilia contraria, 400. 



Taylori (Balea),= Berendtia, 20, 

 432. 

 Cochlicopa rosea, 84. 

 Coecilianella acicula, 190. 

 Ccelocentxum irregulare, 432. 

 Columna Californica, 400. 

 teres, 400. 

 vermieulus, 400. 

 Conulus, 124. 

 Cylindrella, 381. 

 Cylindrella campanulata, 384. 

 concisa, 385. 

 Goldfussi, 177. 

 Hydeana, 385. 

 irregularis, 20. 

 jejuna, 383. 

 lactaria, 383 

 Newcombiana, = Berendtia, 



383. 

 Poeyana, 382. 



Sontifica = Macroceramus. 

 lemondi, 21. 

 Roemeri, 177. 

 Taylori, 20. 



Dendropupa, 213. 

 Deroceras, 153. 

 Dorcasia, 346. See Helix. 



Elasmognatha, 414. 

 Eucalodium Newcombianum = 



Taylori. 

 Eumelus, 153. 

 Euparypha, 375. See Helix. 



Ferussacia subcylindrica, 187. 

 Fruticicola, 345. See Helix. 



Gastrodonta. .See Helix. 

 Geophila, 21. 

 Glandina, 21. 

 Glandina Albersi, 21. 



bullata, 86. 



corneola, 86. 



decussata, 86. 



Marminii, 87. 



parallela, 85. 



Texasiana, 84, 87. 



truncata, 84. 



turris, 21. 



Vanuxemensis, 83. 

 Glyptostoma, 373. 

 Goniognatha, 401. 

 Gonostoma, 261. 



Helicodiscus, 184. See Helix. 



Helix, 252. 



Helix abjecta, 320. 



acerrus, 104. 



acutedentata, 21. 



aeruginosa, 355. 



albella, 257. 



albocincta, 348. 



albolabris, 317. 



albolineata, 348. 



albozonata, 348. 



alliarius, 135. 



alternata, 161. 



amplexus, 257. 



Araurensis, 342. 



anachoreta, 358. 



angulata, 255, 257. 



anilis, 21. 



annulata, 122. 



apex, 118. 



appressa, 305. 



arborea, 114. 



arboretorum, 358. 



arbustorum, 257. 



areola ta, 20. 



Ariadna;, 280. 



arrosa, 354. 



aspersa, 380. 



asteriscus, 167. 



attenuata, 255. 



auriculata, 263. 



aurifonnis, 265. 



avara, 268. 



Ayersiana, 359. 



barbigera, 294. 



Baskervillei, 337. 



bicarinatus, 256. 



Berendtia 



