534 



THE CHICAGO ACADEMY OF SCIENCES. 



INDEX. 

 New species and genera and new names are printed in small capitals; the 

 page number indicating reference to a diagnosis is printed in italics. 



abyssicola, 28, 36. 

 accelerata, 88, 89. 

 Acella, 93, 108, 110, 122, 125, 126, 



191, 198, 199, 347. 

 acuminata, 55, 166, 167. 

 acuta, 274, 275, 282. 

 adamsi, 393, 405. 



adelinse, 210, 211, 214, 220, 273, 408. 

 alamosensis, 104. 

 alaskensis, 455. 

 alpenensis, 315, 316, 321, 322. 

 alternata, 466. 

 Amnicola, 21. 



ampla, 182, 222, 223, 389, 409, 416, 

 417, 420, 421, 428, 440, 441, 450, 

 452, 458-460. 

 Amphipeplea, 121, 123, 125, 225. 

 Amphipepleinse, 125. 

 Amphipeplidse, 124. 

 ampliata, 149. 

 Ancylidse, 124. 

 Ancylus, 121. 

 Ancylus fuscus, 197. 



parallelus, 198. 



angulata, 402, 413, 416, 419, 421, 423- 

 425, 427. 



Anodonta grandis footiana, 25. 



Anodonta marginata, 25. 



anticostiana, 95, 106, 107. 



apicina, 19, 22, 52, 53, 104, 106, 387, 

 390, 397-399, 402, 406, 440, 44*456. 



Aplexa, 121. 



\plexa hypnorum, 19, 54, 233, 240, 

 312. 



appressa, 17, 19-21, 52, 53, 137, 141, 

 144-159, 170, 180. 



arctica, 366, 373-376. 



Arion ater, 41. 



hortensis, 41. 



aspirans, 204, 208, 209. 



ativuncula, 87. 



atkaensis, 457. 



atkinensis, 457. 



attenuata, 313, 327, 343, 353-355. 



Aucella piochii, 104. 



Auricula, 84, 123, 134. 



auricularia, 1, 2, 8, 9, 13, 15, 28, 39- 

 41, 45-46, 51, 54, 55, 88, 178, 179, 

 182, 411, 421. 



bakeri, 107, 108. 



barbadensis, 428, 431. 



bicolor, 149. 



binneyi, 52, 53, 387, 406, 407, 421, 432, 



439, 440-447, 450-455. 

 Bithinia tentaculata, 41. 



BLATCHLEYI, 321, 322. 



bombycina, 462. 

 bonnevillensis, 105, 106. 

 bottnica, 150. 



brownii, 382, 383, 390, 391, 444. 

 bryanti, 210, 211, 213. 

 Buccinum glutinosum, 125. 

 palustre, 200, 298. 

 truncatulum, 199, 200. 

 Bulimnea, 122, 123, 125, 126, 183, 



184, 199. 

 bulimoides, 2, 27, 53, 209, 211-214, 



217, 220-224, 231, 233, 267, 396. 

 Bulimus, 84. 



californica, 359, 360, 361. 

 Campeloma, 84, 247. 



decisa, 84, 466. 

 multistriata, 111. 

 caperata, 2, 5, 6, 9, 19, 20, 52, 63, 95, 



105, 214, ^5-235, 240, 241, 246, 313, 



380, 390. 

 Cardium edule, 28. 



rusticum, 28. 

 Carinifex, 121, 128. 

 cassi, 221, 222, 264, 267. 

 casta, 172, 174-Y/6. 

 catascopium, 4, 9, 21, 32, 33, 52, 55, 



88, 99, 105, 106, 109, 110, 127, 296, 



305, 313, 378, 379, 380, 381-408, 414, 



415, 427, 428, 431-433, 438, 440, 444, 



446-449, 458, 460. 

 canadensis, 1, 415, 416, 425, 427, 430- 



434, 436, 437, 440. 

 Cercaria furcata, 148. 

 chalybea, i7i-l76. 

 championi, 171, 175-177. 



