ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. COS 



No. 



31. Loda minufa, Liun. One sp. liviug*. 



32. Yoldia lanceolata, J. Sby. Two sp. living*. 

 88. Yuldia (Diii/ffdala. Due sp. living*. 



84. Ifaminca hj/datis. Two sp. liA-ing. 



85, 36. Two species of Tectiln-ancliiates, not yet worlied-out by Dr. Alcock. 

 87. Tornatina exmiia, Baird. Abundant, living. 



38. Ci/licfi>ia {'•fvar.) attoHsa. One living sp. Probably a variety of cy/m(Zr«cea, 



39. iJentaUxm rectiim, n. s. Very rare, dead. 



40. Acanthopk'ura scahra. One young living sp. 



41. Mopalia Graj/ii, n. s. One linng sp. 



42. 31opaUa Iliiuhii. One living sp. 



43. MnnaJia siniiata, n. s. Two sp. iiving'. | i n i j • ,i 

 .,,,',.. ' rrr ^v- > A well-marlied OTOup lu the gcnus, 



44. AluDniia imporcafa,n. s. 1 wo sp. living. ( e r o 



4-5. Ischnocltiton ( Trachydermon) tri/idus, n. s. One living sp. 



46. Ischiwchifon ( Trachi/dcrmon) Jlectens, n. s. One living sp. 



47. Ischnochiton {Trachi/dermoii) retiporosus, n. s. One living sp. 



48. Ischnochiton (Lcpidopleurus) 31ertcnsn. Rare, living. 



49. Lejyfa caecoides, n. s. Three sp. living. 



50. Calliostoina variei/alum, n.s. One living sp. 



61. Margarita ? Vahlii. Three sp. living, = 31. prisiJla, Jeffi"., teste A. Ad. 



516. Mar (jar it a (? v.) tennisculpta. Perhaps avar. of Vahlii, hut sculptured. Several 

 living specimens. 



62. Margarita lirulata, n. s. Several living specimens, forming a Darwinian group, 



of which var. «. suhelevata, var. /3. obsohta, and ?var. y. cunica might pass 

 for species from single specimens. 



63. Margarita injiata, n. s. Two sp. living. 



64. Me alia lacteola, ?n. s. Two sp. li^dug, but eroded. May prove a var. of 



hcfea, but with different sculpture. 

 546. Mesalia (?IacteoIa, var.) cubplanata. Two sp. living, but eroded. 



55. Lactam vincta. One fresh specimen. 



56. Risftoa comnacta, n. s. Not uncommon, living. 

 67. DriUia incisa, n. s. Two fresh specimens. 



o8. DriUia cancellata, n. s. One adolescent specimen. 



59. Mangelia levidcnsis, n. s. One fresh specimen. 



60. Mangelia angniataf. One fresh specimen. 



61. £tla exciirvata, n. s. (Like Trerelgana.) One fresh specimen, 



62. Clteinnifzia ( ? v.) aurantiaj. One fresh specimen. 



63. Chcmnitzia torquataf. Two fresh specimens. 



64. Chcmnitzia tridentata\. Two fresh specimens. 



65. Eulima micans, n. s. One fresh specimen. 



66. Vein f ma lo'tigaia. Several fine living specimens. 



67. Ocinehra inter foxsa. Hare, dead. 



68. Kitidella GouIdii\. Two living specimens, proving the genus. 



69. Trophon mulficostaius. Two fresh specimens. 



70. Chrysodonms ?tabuJatHs, jim. One young sp. 



71. Chrgsodomus rectirostris, n. s. One living sp. 



72. 73. Two species of Cephalopods, not yet affiliated. 



Besides adding more than 70 marine species to the Vancouver branch of the 

 Californian fauna, from specimens in good condition, without a single bal- 

 last or exotic admixture, the confirmation of many species, which before 

 rested only on the uncertain testimony of the U. S. E. E. labels, and the 

 affiliation of others which, on the same testimony, had been wrongly assigned 

 to distant and erroneous localities, was no slight benefit to science. The 

 land and freshwater species of the Expedition will be found tabulated, with 

 others, in the separate lists ; par. 115. 



103. While the American naturalists were thus actively engaged in ex- 



t Those species were first found by Col. Jewett at Sta. Barbara. Vide p. 537. 



89 



