FROM THE COAST OP BRITISH COLUMBIA. 133 



BUCCINUM POLARE (Gray), var. COMPACTUM, Da//. At the same station as the species last 

 mentioned ; one adul^but dead shell, in good condition. This species was collected 

 by Mr. James Ui< hardsou, at low water, near Victoria, Vancouver Island, in 18*75. 



/NASSA (TiMTiA) MKNDICA, Gould. Strait of Georgia at station No. 5, alive and plentiful; 

 Johnstone Strait at station No. 10, one living specimen ; Queen Charlotte Sound 

 at station No. 12, several living shells ; and Quatsiuo Sound at station No. 20, ten 

 living specimens. 



/ ASTYRIS CABINATA (Hinds), var. HINDSII. (=Columbella Hindsii, Reeve.) Low tide in the 

 Goletas Channel, one living specimen. In this species the nucleus of the oper- 

 culum is said to be subcentral, or " somewhat more within the margin " than it is 

 in that of Nitidella Govldii. 



x NITIDELLA GOULDII, Carpenter. Strait of Georgia at station No. 2, two living specimens, 

 and at station No. 5, abundant and living ; Quatsino Sound at station No. 19, three 

 living specimens. 



This shell has been separated from the preceding species, both generically 

 and specifically, mainly upon minute differences in the opercula, the nucleus of the 

 operculum of N. Gouldii being stated to be nearly marginal. Morch, Ball and 

 Fischer, however, assert that in the Columbellidse the operculum is so variable 

 that it does not afford a good character for the discrimination of genera or species, 

 and Tryou, in his "Manual of Couchology," places N. Gouldii among the synonyms 

 of Columbella carinata. 



/AMPHISSA COKKUGATA, Reeve. Common, living, at low tide, at the entrance to Malaspina 

 Inlet ; in llace Passage and other localities in Johnstone Strait ; in the Goletas 

 Channel, and in Queen Charlotte and Quatsiuo Sounds. Dredged also, alive and in 

 some numbers, in the Strait of Georgia at station No. 5, and in Queen Charlotte 

 Sound at stations Nos. 15, 16, 17 and 18. 



, PUEPTJBA CEISPATA, Chemnitz. (=P. lactuca, Eschscholtz.) Extremely abundant and very 

 variable in size, shape, sculpture and colour, living at or near low water mark, on 

 the north shore of the Strait of Georgia, in Discovery Passage, in Johnstone and 

 Broughton Straits, in the Goletas Channel, on the east side of Queen Charlotte 

 Sound, and at the entrance to Quatsiuo Sound. Dredged also abundantly, alive, 

 in Discovery Passage at station No. 7, and in very small numbers in Johnstone 

 Strait at station No. 10, and in Queen Charlotte Sound at station No. 16. 



PURPURA LIMA, Maityn. (=P. canalicutata, Duclos.) At low water throughout the district, 

 associated with the preceding, of which Von Martens and others regard it as only 

 a local variety. It did not, however, occur at any of the stations where the dredge 

 was used. 



/PURPURA SAXICOLA, Valenciennes. Queen Charlotte Sound, at low tide, five adult, living 

 shells of a variety in which the interior of the aperture and part of the columella 

 is stained dark brown, while the former is margined exteriorly by a baud of pale 

 straw colour. Von Martens and other writers regard this shell as a mere variety 

 of P. lima, Martyu. 



