374 ZOOLOGY. 



Family MELANIAD^G- 

 MELANIA PLICIFERA. 



Melania plicifera, LEA, on fresh water and land shells in Trans. Phil. Soc. of Phil., pi. xxiii, f. 90. CARPENTER'S 



Keport, p. 325. 

 Hob. Very common in rivers of Washington Territory. J. G. C. 



MELANIA SILICULA. 



Melania silicula, GOULD, Proceed. Bost. Soc. II, p. 224, 1847 ; Exped. Shells, 46. Carp. Hep., p. 325. IDEM, Expl. 



Exped. Shells, p. 141, fig. 164. 

 Hab. Rivers of Washington Territory, Dr. Cooper ; Nisqually and Oregon, Dr. Gould. 



MELANIA SHORTAENSIS. 



Melania Shortaensis, LEA, in literis. 

 Hob. Willopah river, Dr. Cooper. 



AMNICOLA NUTTALLIANA. 



Paludina Nuttalliana, LEA, in Philos. Trans, pi. xxvi, f. 89. 

 Hob. Columbia river, Dr. Cooper. 



AMNICOLA SEMINALIS. 



Paludina seminalis, HINDS, Zool. Sulph. p 59, pi. 16, f. 22. 

 JJit/iinia seminalis, CARP. Rep. p. 326. 

 Sab. Upper California, Dr. Trask. 



Family TURBITELLID J3- 

 TURRITELLA ESCHRICHTII. 



Turritella eschrichtii, MIDDEND. Beitrage, II, p. 68, pi. xi. f. 1 ; Carp. Rep. 325. 

 flab. Puget Sound, Dr. Suckley, G. Gibbs, esq. ; Arctic Sea, Middendorff. 



A few specimens sent from Puget Sound agree in all respects with the figure and description 

 given of this species by Middendorff, as cited above. 



Family LIT TOKINID ,E . 



LITTORINA RUDIS. 



Littorina rudis, GOULD, Stimpson, Shells of New England. 

 Litlorina Barclayan ? HINDS. 

 Hab. Shoal water bay to Straits of Fuca, Dr. Cooper, Dr. Suckley, G. Gibbs, esq. 



Very abundant on the northwest coast, where it presents the same varied appearances as our 

 eastern shell. 



LITTORINA SCUTULATA. 



Littorina scutulata, GOULD, Proceed. Bost. Soc. Ill, p. 83, March, 1849, Exped. Shells, p. 83. IDEM, U. S. Expl. 



Exped. Moll. & Shells, p. 200, fig. 241. CARP. Rep. p. 326. 

 Hab. Puget Sound, Dr. Cooper ; Puget Sound, Oregon, Dr. Pickering. 



On rocks from the head of Puget Sound to the Straits of Fuca, having habits similar to those 

 of L. rudis. J. G. C. 



LITTORINA PLANAXIS. 



Littorina planaxis^vn. Sup. PIIILIPP. Abbaldingen T. II, p. 201; Litt. Pt.IV, p. 16. Carp. Report, p. 326. 

 Hab. San Luis Obispo, Dr. Antisell. 



