374 ZOOLOGY. 



Family MELANIAD.E. 

 MELANIA PLICIFERA. 



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



Eeport, p. 325. 

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



MELANIA SILICULA. 



Mdania silicida, GOULD, Proceed. Bost. Soc. II, p. 224, 1847 ; Exped. Shells, 46. Carp. Rep., p. 325. IDEM, Expl. 



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

 Hob. Elvers of Washington Territory, Dr. Cooper ; Nisqually and Oregon, Dr. Gould. 



MELANIA SHORTAENSIS. 



Mdania shortaensis, LEA, in literis. 

 Hab. Willopah river, Dr. Cooper. 



AMNICOLA NUTTALLIANA. 



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

 Hab, Columbia river, Dr. Cooper. 



AMNICOLA SEMINALIS. 



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

 BiiMnia seminalis, CARP. Rep. p. 326. 

 Hab. Upper California, Dr. Trask. 



Family TUREITELLID^. 



TURRITELLA ESCHRICHTIL 



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

 Hab. 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 LITT01UNID $ . 



LITTORINA RUDIS. 



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

 Littorina JBarclayan ? HINDS. 

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



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

 eastern shell. 



LITTORINA SCUTULATA. 



Littorina scutulata, GOTJLD, 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. 



LUtorina planaxis, NUTT. Sup. PUILIPP. Abbildungen T. II, p. 201 ; Litt. Pt. IV, p. 16. Carp. Report, p. 326. 

 Hab. San Luis Obispo, Dr. Antisell. 



