210 



REPORT 1856. 



95 



Page 



83. Cardium blandum, G., Puget Sound. 



85. Venus rigida, G., Puget Sound, 



Straits of De Fuca. 



86. Cyclas patella, G., Oregon. Re- 



sembles C. cornea. 



87. Anodon feminalis, G., Oregon. 

 „ Anodon cognata, G., Nisqually and 



Fort Vancouver. 

 „ Alasmodon falcata, G., Wallawalla, 

 Oregon ; Sacramento River. = A. 

 margaritifera, var. teste Lea and 

 others. 



88. Unio famelicus, G., Wallawalla, 



Oregon. 



The localities included in the ( ) are added from the standard work, for 

 which that above quoted was but a preparation, entitled " United States 

 Exploring Expedition during the years 1835-4*2, under the command of 

 Charles Wilks, U.S.N. Philadelphia 1852- ." The plates have not yet found 

 their way to this country. Besides the species already enumerated, are 

 found the following : — 



Page 



93. Mytilus (Modiola) jlabellatus, G., 



Puget Sound, Oregon (Townsend 

 Harbour, San Francisco, and spe- 

 cies from G. Calif.). Apparently 

 = Modiola Brasiliensis. 



94. Mytilus trossulus, G., Killimook, 



Puget Sound, Oregon. Appears 



a var. of M. edulis. 

 Pecten caurinus, G., Port Townsend, 



Admiralty Inlet, Oregon. 

 Pecten hericeus, G., Straits of De 



Fuca, Oregon. 



2. Avion foliolatus, G., Puget Sound. 



3. Limax Columbianus, G., Puget Sd. 



and Oregon. 

 36. Helix Vancouver ensis, Lea, Oregon. 

 66. Helix Nuttalliana, Lea, Puget Sd. 



and Oregon. 

 „ Helix Townsendiana, Lea, Oregon. 

 70. Helix germana, G., Oregon. 

 113. Planorbis corpulentus, G., Oregon. 

 122. Lymncea apicina, G., Oregon. 

 „ Lymncea umbrosa, Say (Astoria), 

 Oregon, and Sacramento River. 

 143. Melania plicifera, G., Oregon. 

 353. Lottia viridula. " Mr. Nuttall 

 brought home several specimens, 

 which he described under the 

 name of monticida" \monticola\. 

 436. Anodonta angulata, G., Sacramento 



River. 

 206. Scalaria ? australis, Puget Sound. 

 This species is from the opposite 



side of the equator from S. au- 

 stralis. Dr. Gould thinks it will 

 prove distinct, but cannot yet see 

 any differences. 



214. Natica algida, G., Oregon. 



219. Trichotropis cancellata,ILm&s,Ore- 

 gon. 



241. Triton Oregonense, Jay, Oregon. = 

 Fusus Oregonensis -f cancellatus, 

 Rve. 



244. Purpura ostrina, G., Oregon. 



24/. Columbella gausapata,G.*, Oregon. 



322. Chiton inter stinctus, G., Oregon. 



323. Chiton vespertinus, G., Oregon. 

 399. Saxidomus Nut t a Hi, Com-., Oregon. 

 467. Terebratula pulvinata, G., Oregon, 

 168. Terebratida caurina, G., Oregon. 



And the following Nudibranchs : — 

 Chiorcera leonina, G. ; 310. ? Den- 

 dronotus; 311. ? Goniodoris ; 29. 

 ? Doris; IJEolis. 



In the Preface to this work, Dr. Gould states his views as to the geogra- 

 phical distribution of species, and gives the following interesting lists of 

 parallel species from different seas : — 



Oregon District. 



My a prcecisa. 

 Osteodesma bracteatum. 

 Cardita ventricosa. 

 Cardium blandum. 

 Venus calcarea. 



Atlantic Coast. 

 M. truncata. 

 0. hyalinum. 

 C. borealis. 

 C. Icelandicum. 

 V. mercenaria. 



* Dr. Gould remarks (p. 270), that "there is a minute operculum to Mitra, while there is 

 none to Columbella:^ Of the shells called ColumbeUa:, the typical species, C.strombiformis, 

 major, and fuscata, have a broad oval operculum, with the apex at the anterior end of the 

 outside margin; NilideUa cribraria has a distinctly Purpuroid operculum; and Anachis 

 costellata, &c. have a Pisanoid ungulate operculum. Vide B.M. Maz. Cat. in loco. 



