FROM THE COAST OF BRITISH COLUMBIA. 133 
BUCCINUM POLARE (Gray), var. COMPACTUM, Dall. At the same station as the species last 
mentioned ; one adult but dead shell, in good condition. This species was collected 
by Mr. James Richardson, at low water, near Victoria, Vancouver Island, in 1875. 
Nassa (TRITIA) MENDICA, 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 Quatsino Sound at station No. 20, ten 
living specimens. 
ASTYRIS CARINATA (Hinds), var. Hinpstt. (—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 Mitidella Gouldii. 
NITIDELLA GOULDI, 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. Moérch, Dall and 
Fischer, however, assert that in the Columbellidæ the operculum is so variable 
that it does not afford a good character for the discrimination of genera or species, 
and Tryon, in his “ Manual of Conchology,” places N. Gouldii among the synonyms 
of Columbella carinata. 
AMPHISSA CORRUGATA, Reeve. Common, living, at low tide, at the entrance to Malaspina 
Inlet; in Race Passage and other localities in Johnstone Strait; in the Goletas 
Channel, and in Queen Charlotte and Quatsino 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. 
PURPURA CRISPATA, 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 Quatsino 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 band of pale 
straw colour. Von Martens and other writers regard this shell as a mere variety 
of P. lima, Martyn. 
