INDEX OF SPECIES. 



19 



Area 



illota, var. 278. 

 imbricata, 249, P 139. 

 incongrua, 249, P 134, P 135. 

 labiata, 183, 249, 310, 



363, P 134. 

 labiosa, 249, P 134. 

 ?lurida, 226. 

 microdonta, 75. 

 multicostata, 27, 85, 102, 107, 



130, 260, 183, 234, 249, 



310, P 134, P 136. 

 mutabilis, 200, P 139. 

 nux, 229, 310. 

 Obispoana, 81. 

 ?ovata, 236, P 538. 

 Pacifica, 229, 282. 

 pectiniformis, 10, 178, 289. 

 pernoides, 283, 351. 

 pholadiformis, 38, 200, 278. 

 pusilla, P 142. 

 quadrilatera, 183. 

 Reeviana, 62, 200, 278, 310. 

 reversa, 200, 234, 278, 



O 249, 310, P 136. 

 senilis, 31, 366, P 132. 

 setigera, P 140. 

 similis, 38, 200, 229. 249, 



278, P 135. 

 solida, 226, 278. 

 squamosa, P 142. 

 ,?squamosa, 62. 249. 

 Tabogensis, 200, 249, 278, 



P 141. 



trilineata, 80. 



trapezia, 14, 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 



radis, 9. 

 Argina 



brevifrons, 31, 154. 

 A rgobuccinum 



cancellatum, 33, O 338. 



Chemnitzii, 338. 



nodosum, 182, 261, 270, 

 367, 338, P 454, V 209. 



Oregonense, 338. 



scabrum, 338. 

 Argonauta 



argo, 99, 112, 150. 



liians, 153. 



var. papyracea, 112. 

 Arianta 



arrosa, 157. 



Ayresiana, 158. 



Bridgesii, 158. 



Californiensis, 158. 



Carpenteri, 158. 



Dupetitliouarsi, 158. 



exarata, 158. 



intercisa, 158. 



levis, 158. 



Mormonum, 158. 



Nickliniana, 157. 



ramentosa, 158. 



redimita, 157. 



reticulata, 158. 



Townsendiana, 157. 



Traskei, 158. 



tudiculata, 157. 

 Aricia 



Arabica, n, P 374. 



arabicula, 27, 109, 176, 258, 

 328, P 373, P 374. 



caput-serpentis, P 374. 



obvelata, P 374. 



punctulata, 24, 109, 155, 176, 



0328. 

 Arion 



foliatus. 159, 313. 



foliolatus, 210. 

 Artemis 



Dunkeri, 201,0 224,0278^ 61. 



