INDEX TO VOLUME IV. 



Achatiua bullata, 138. 

 Califovnica, 26. 

 fasciata, 138. 

 flammigera, 138. 

 gracillima, 135, 138. 

 lubrica, 138. 

 lubricoides, 138. 

 pellucida, 138, 175. 

 picta, 138. 

 rosea, 139. 

 solida, 138. 

 striata, 139. 

 subula, 139. 

 Texasiana, 139. 

 truncata, 139. 

 Vanuxemensis, 139. 

 virginea, 138. 

 Agatina variegata, 138. 

 Alexia myosotis, 172. 

 Anchistoma thyroides, 54. 

 Aplodon nodosum, 152. 

 Arion^mpiricorum, 31. 

 foliolatus, 31. 

 hortensis, 31. 

 Auricula bideutata, 157. 

 biplicata, 157. 

 cingulata, 161. 

 coniformis, 163. 

 cornea, 157. 

 denticulata, 172. 

 Floridiana, 165. 

 Jaumei, 157. 

 monile, 166. 

 nitens, 169. 

 obliqua, 168. 

 oliva, 161. 

 ovula, 163. 

 pusilla, 169. 

 Sayii, 172. 

 stenostoma, 161. 

 Blauneria heteroclita, 177. 



pellucida, 175. 

 Bulimus acicula, 137. 

 alternatus, 126. 



Bulimus Binneyanus, 12S 

 Californicus, 24. 

 chordatus, 25. 

 coniformis, 163. 

 confinis, 130. 

 dealbatus, 126, 130. 

 decollatus, 134. 

 Dormani, 132. 

 elatus, 24. 

 excelsus, 24. 

 exiguus, 137, 178. 

 fallax, 136. 

 fasciatus, 137. 

 Floridianus, 134. 

 Gossei, 135, 137. 

 gracillimus, 134. 

 barpa, 135. 

 hordeanus, 145. 

 hortensis, 134. 

 Humboldti, 25. 

 Kieneri, 137. 

 lactarius, 126. 

 Laurentii, 25. 

 Liebmanni, 128. 

 liquabilis, 130. 

 lubricus, 137. 

 marginatus, 136. 

 Marias, 128. 

 Mexicanus, 25. 

 monile, 166. 

 multilineatus, 132. 

 mutilatus, 134. 

 nitelinus, 126. 

 obscurus, 137, 145. 

 octona, 137. 

 ovulus, 169. 

 patriarcha, 129. 

 physoides, 131. 

 Schiedeanus, 129. 

 serperastrus, 126. 

 striatus, 137. 

 subula, 134. 

 sufflatus, 25. 

 vegetus, 25. 



