INDEX OF SPECIES. 



19 



Area 



illota, var. 278. 

 imbricata, O 249, P 139. 

 incongrua, 249, P 134, P 135. 

 labiata, 183, 249, 310, 



O 3^S, P 134- 

 labiosa, 249, P 134. 

 Tlurida, 226. 

 microdonta, 75. 

 inulticostata, 27, 85, 102, 107, 



130, 260, 183, 234, 249, 



O 310, P 134, P 136. 

 mutabilis, 200, P 139. 

 mix, 229, O 310. 

 Obispoaiia, 81. 

 ?ovata, O 236, P 538. 

 Pacifica, 229, 282. 

 pectiniformis, 10, 178, O 289. 

 peruoides, 2S3, 351. 

 pholadiformis, 38, 200, 278. 

 pusilla, P 142. 

 quadrilatera, 183. 

 Reeviana, 62, 200, 278, 310. 

 reversa, 200, 234, 278, 



O 249, O 310, P 136, 

 senilis, 31, 366, P 132. 

 setigera, P 140. 

 similis, 38, 200, 229, 249, 



27S, P 135. 

 solida, O 226, 278. 

 squamosa, P 142. 

 ?squamosa, 62, 249. 

 Tabogensis, 200, 249, 278, 



P 141. 

 trilineata, 80. 



trapezia, 14, O 202, 249, P 550. 

 tuberculosa, 14, 23, 38, 200, 



183, 202, 229, 234, 



249, 278, 310, P 135. 

 umbonata, P 142. 

 vespertilio, 226. 

 Arcopagia 



biplicata, 80, 81. 

 lamellata, 97, 125. 

 medialis, 80. 

 unda, 81. 



Arcturus 



nidis, 9. 

 Argina 



bievifrons, 31, 154. 

 A rgobuccinum 



caiicellatum, ;i;i, 338. 



Chemnitzii, 338. 



nodosum, 182, 261, 270, 

 367, 338, P 454, V 209. 



Oregoueuse, 338. 



scabrum, O 338. 

 Argonauta 



argo, 99, 112, 150. 



hians, 153. 



var. papyracea, 112. 

 Arianta 



arrosa, 157. 



Ayresiana, 158. 



Bridgesii, 158. 



Californiensis, 158. 



Carpenteri, 158. 



Dupetitbouarsi, 158. 



exarata, 15S. 



intercisa, 158. 



levis, 158. 



Mormonum, 158. 



Nickliniaiia, 157. 



ramentosa, 158. 



redimita, 157. 



reticulata, 158. 



Townsendiaiia, 157. 



Traskei, 158. 



tudiculata, 157. 

 Aricia 



Arabica, 11, P 374. 



arabicula, 27, 109, 176, O 258, 



328, p 373, P 374. 



caput-serpentis, P 374. 



obvelata, P 374. 



punetulata, 24, 109, 155, 176, 

 O328. 

 Arion 



foliatus, 159, 313. 



foliolatus, 210. 

 Artemis 



Dunkeri, 201, 224, 278, P 61. 



