120 WHITEAVES ON MARINE INVERTEBRATA, ETC. 
NucuLa (AcILA) LYALII, Baird. Strait of Georgia at station No 9, Johnstone Strait at 
stations Nos. 9 and 10, and Queen Charlotte and Quatsino Sounds at stations Nos. 
12, 14, 17 and 20. Taken more or less plentifully and living at each of these 
localities, in from ten to thirty fathoms. 
NUCULA TENUIS (Montagu), var. LUCIDA, Gould. Johnstone Strait at station No. 9, several 
living specimens. Quatsino Sound at station No. 20, abundant, living but small. 
PECTUNCULUS SUBOBSOLETUS. (—Axinæa subobsoleta, Carpenter.) Discovery Passage at 
station No. 7, two living specimens. Queen Charlotte Sound at station No. 14, three 
living shells, and at station No. 15, ten living specimens. North or north-west coast 
of Vancouver Island, between Nahwitti Bar and Quatsino Sound, at low water, 
one living shell. 
CRENELLA DECUSSATA, Montagu. Strait of Georgia at station No. 5, two living examples of 
an unusually large form of the species. Queen Charlotte Sound at station No. 12, 
three living specimens, of the same size; and station No. 14, four specimens of the 
usual size and one (living) which measures, length, twelve mm., height, eleven 
mm., and maximum thickness, seven mm and a half. 
MODIOLARIA LAVIGATA, Gray. Port Neville, on the mainland of British Columbia, near 
Johnstone Strait, at low water, one living specimen associated with Saxicava rugosa. 
MoDIOLARIA NIGRA, Gray. Strait of Georgia at station No. 5, Discovery Passage at sta- 
tion No. 7, and Queen Charlotte Sound, at stations Nos. 14 and 16,—a few immature 
living specimens at each of these localities. 
MopioLA MoDIOLUS, LZ. Johnstone Strait at station No. 10, six half-grown, living shells, 
with a simply bearded epidermis. Queen Charlotte Sound at stations Nos. 11, 12, 
14, 16 and 18,—a few living, but for the most part, very young specimens at each. 
The species usually lives in the crevices of rocks, or between or on stones. 

MyriLus EDULIS, L. A few specimens of the fry of this very common and ubiquitous 
species occur in dredgings in the Ntrait of Georgia, at station No. 5. 
Mytinus CALIFORNIANUS, Conrad. Low water at Galiano Island, in the Strait of Georgia, 
and dredged at station No. 11, in Queen Charlotte Sound. 
KELLIA LAPEROUSEI, Deshayes. Low tide, entrance to Malaspina Inlet; one fine and adult 
living specimen, which measures twenty-five mm. (or just one inch) in length by 
twenty mm. in height, and a few smaller ones. 
KELLIA LAPEROUSEI, var. CHTRONI, Carpenter. Strait of Georgia, at low water, one living 
shell; and Johnstone Strait, also at low water, seven living specimens. 
DIPLODONTA ORBELLA, Gould. Entrance to Malaspina Inlet at low water, three adult 
living specimens; also north or north-west coast of Vancouver Island, between 
Nahwitti Bar and Quatsino Sound, at low water, one adult and living shell. 
CRYPTODON FLEXUOSUS, L. Strait of Georgia at station No. 2, four large and perfect 
specimens ; and Quatsino Sound at station No. 20, two equally perfect specimens. 
