INDEX OP SPECIES. 



Anachis 



Guatemalensis, 35, 181. 



lentiginosa, 344. 



lyrata, 25, 53, 180, 344- 



maculosa, 263. 



maesta, 181, 270, 344, P 509. 



nigricans, 25, 181, 344, 361, 



P50 9 . 



nigrofusca, 263, 343, P 509. 

 nucleolus, 343. 

 pall Ida, 112, 343. 

 parva, 344. 

 fpeuiuillata, 23, 150, 288. 

 pygmaea, 25, 35,112, 181,0263, 



0343, 0363, P 510, P 511. 

 pygmsea, var. 284, P 510. 

 pulchrior, 112. 

 rufotincta, 34, 263, 343, 



P SIL 



rugosa, 25, 59, 181, 283,0 344. 

 rugulosa, 361, 344. 

 scalarina, 35, 180, 263, 343, 



P505- 



serrata, 112, 260, 343, 263, 

 P5o 9 . 



subturrita, 99, 150. 



terpsichore, 364. 



te?selata, 270, 344. 



tincta, 105, 221. 



tseniuta, 112, 260, 343. 



varia, 25, 181, 344, P 507. 

 Anatina 



alta, 39, 204, 280. 



argentaria, 231. 

 Anculosus 



Nuttalli, 162. 

 Ancylus 



caurinus, 85, 161. 



crassus, 161. 



fragilis, 161. 



Kootaniensis, 90, 161. 



Newberryi, 161. 



Nuttalli, 85. 



patelloides, 120, 161. 

 Anellum 



annulatain, X 442. 

 2 



Anellum 



clathratum, 256, 324, X 442. 

 elegaiitissimura, X 443. 

 ?elegantissimum, var. Searles- 



Woodii, X 443. 

 elongatum, 256, 324, X 442. 



var. semilseve, X 442. 



firmatum, 256, 324, X 442. 

 Floridanum, X 442. 

 gracile, X 443. 

 gurgulio, X 442. 

 ?parvum, 324. 

 pulchellum, X 442. 

 quadratum, 256, 324, X 442. 



? var. couipactuin, X 442. 



regulare, X 443. 

 subirnpressum, 256, 324, 



trachea, X 442. 



? var. obsoletum, X 442. 



turn id u in, X 442. 

 undatum, 256, 324, X 443. 

 Angulus 



ainplectans, 155, 272. 

 decumbens, 271. 

 Gouldii, 125, 151, 300. 

 modestus, 88, 125, 167. 

 obtusus, 125, 235. 

 tener, 88, 125, 167. 

 variegatus, 97, "3, 125,235. 

 Anodon (=Anodonta) 



angulata, 17, 18, 86, 92, 120, 



164, 206, 210, 212, 



297, 309. 

 anatina, 222. 

 anserina, P 117. 

 atrovirens, 295, 309. ; 

 Californiensis, 77. 

 cellensis, 222. 

 cicouia, 170, 232, O 227, 



309, 248, P 117, U 202. 

 cognata, 17, 91, 210, 212, 



310. 



cornea, 295, 309. 

 feminalis, 17, 86, 120, 210, 



212, 213, 309. 



