ON MOLLUSCA OF THE WEST COAST OP NORTH AMERICA. 209 



animals of about 500. The description of the collections was entrusted to 

 Dr. A. A. Gould of Boston, the well-known author of the ' Report of the 

 Invertebrata of Massachusetts.' In 1846 the descriptions of part of the 

 species were issued in a pamphlet form, to which additions have been made 

 from time to time, as they have appeared in the ' Proc. Bost. Soc. Nat. Hist/ 

 In this work are the following descriptions of species from the Californian 

 and Oregon districts. 



Page 



3. Chiton lignosus, Gld., Puget Sound. 

 (= C. Ugnarius, G. MS.) 



6. Chiton dentiens, G., Puget Sound. 

 „ Chiton muscosus, G., Puget Sound. 



7. Patella fimbriata, G., Straits of De 



Fuca. 

 9. Patella instabilis, G., Puget Sound. 

 „ Patella conica, G., Puget Sound. 



= Scurria mitra, Esch. 

 „ Lottia pintadina, G., Straits of De 

 Fuca, Puget Sound, and Columbia 

 River (San Francisco). 

 Max. pars = A. patina, var. : 

 pars = A. mesoleuca, var. : 

 teste sp. typ. 

 10. Patella (? Lottia) textilis, G., Straits 



of De Fuca and Killimook. 

 „ Patella (? Lottia) scabra, G., San 

 Francisco. " Perhaps a variety of 

 P. textilis." =P. spectrum, Nutt., 

 Rve., not P. scabra, Nutt., Rve. 



13. Fissurella cratitia, G., Puget Sound. 



? = F. aspera, Esch. 



14. Rimula cucullata, G., Puget Sound. 



(? Puncturella.) 

 „ Rimula galeata, G. (Classet), Puget 



Sound. (? Puncturella.) 

 „ Crepidula rostriformis, G., Straits of 



De Fuca. = C. adunca, Sow. 



15. Crepidula lingidata, G., Puget Sound. 



" Like C. Capensis, Quoy," 1 sp. 

 „ Crepidula nummaria, G., Classet. 



[Probably a var. of C. lingulata.~\ 

 „ Calyptrcea fastigiata, G., Puget 



Sound. \_Galerus.~] 



16. Helix labiosa, G., Astoria, Oregon. 



17. Helix loricata, G., California (Sa- 



cramento River). 

 „ Helix devia, G., ? Oregon. 



18. Helix strigosa, G., interior of Oregon. 

 „ Helix sportella, G., Puget Sound. 



31. Succinea rusticana, G., Oregon. 



41. Limnea lepida, G., Lake Vancouver, 



Oregon. 



42. Planorbis opercularis, G., Rio Sa- 



cramento, U. Cal. 

 „ Planorbis vermicularis, G., interior 

 of Oregon. 



43. Physa virginea, G., Rio Sacramento. 

 46. Melania silicula, G., Nisqually, Ore- 

 gon. (= M. siliqua, G. MS.) 



1856. 



Page 



46. Melania bulbosa, G., Columbia River. 



49. Natica Lewisii, G., Puget Sound 



and Columbia River. 



50. Natica caurina, G., Straits of De 



Fuca. " Nearly the same as N. 

 impervia, Phil., from Cape Horn." 



52. Lacuna carinata, G., Puget Sound. 

 „ Littorina patula, G., San Francisco. 



= L. planaxis, Phil. 

 „ Littorina lepida, G., Puget Sound. 



53. Littorina scutulata, G., PugetSound. 

 „ Littorina plena, G., San Francisco. 



55. Trochus ligatus, G., Puget Sound. 

 = T.jilosus, Wood. 



60. Cerithium (Potamis) sacratum, G., 



Sacramento River. = Pirena Cali- 

 fornia, Nutt. MS. 



61. Cerithium irroratum, Gould. Hab.? 



[It is difficult to say how this got 

 among the Expedition shells, as it 

 belongs to the Mazatlan, not the 

 Californian fauna. It may have 

 been procured at Callao, or by the 

 accidents of ballast.] = C. stercus- 

 muscarum, Val. 



62. Cerithium filos um, G., Puget Sound. 



64. Fusus jidicula, G., Puget Sound. 



Closely resembles F. turricula. 



65. Fusus orpheus, G., Puget Sound. 



Resembles F. Bamffius. 

 67. Buccinumfossatum,G.,Vviget Sound 



and mouth of Columbia River. 



(San Diego.) (= Nassa fossata, 



G., postea.) Of the same group as 



N. trivittata, Say. 

 70. Nassa mendica, G., Puget Sound, 



Nisqually, &c. Pacific analogue 



of N. trivittata, Say. 



74. Solen sicarius, G., Straits of De 



Fuca, Oregon. 



75. Panopcea generosa, G., Puget Sound, 



Oregon. Like P. Aldrovandi. 

 „ Mya prcecisa, G., Puget Sound. 

 Like M. truncata. 



76. Mactra falcata, G., Puget Sound. 



„ Lutraria capax, G., Puget Sound. 



(Afterwards changed to L. maxima, 



Midd.) 

 77 - Osteodesma bracteata, G., Puget Sd. 



" Closely resembles O. hyalina." 

 83. Cardita ventricosa, G., Puget Sound. 

 P 



