APPENDIX. 359 



ovate. In consequence of its having been in the crop 

 of a duck, the surface of the shell is somewhat eroded, 

 and the apex is broken off. Long. J- inch. Hab. 

 Esquimalt Harbour. (Brit. Mus.) 'Taken from the 

 crop of a pin-tail duck.' /. K. Lord. 



LITTOBINHLE. 



Littorina scutulata. (Gould.) Esquimalt Harbour, between tide marks; 



abundant. 

 sitkana. (Phil.) Esquimalt Harbour, between tide marks ; abundant. 



Amnicola Hindsii. (Baird: Nov. Sp.) 



Testa retusa, solidula, viridi-olivacea, minute lon- 

 gitudinaliter undulato-striata, transversim obscure li- 

 rata, apice erosa ; anfractibus quatuor, ultimo prope 

 medium retuse-carinato, ad suturas canaliculate, suturis 

 impressis ; columella albida ; apertura caerulescente. 



This species resembles somewhat the Paludina 

 seininalis of Hinds, but it differs in contour, being 

 bluntly carinate round the middle of the last whirl, and 

 in being channeled round the suture. The surface of 

 the shell is distinctly marked with numerous flexuous 

 striae, the lines of growth, and near the sutures is rather 

 indistinctly marked with circular strias. I have named 

 it after a good conchologist, who has described several 

 shells from the West Coast of America, and who ob- 

 tained the specimens of his shell from the Eio Sacra- 

 mento, California. Long., largest specimens, nearly 

 i- inch ; lat. rather more than ^ inch. Hab. Kiver 

 Kootanie, and stream at the foot of the Rocky Moun- 

 tains, British Columbia. (Brit. Mas.} 



