[TAYLOR] MARINE MOLLUSCA 49 



Vancouver Island by Dr. Foi'bes, and made the type of this species by 

 Dr. Carpenter. 



The latter remarks, in his note on the species, that it " may luive 

 been passed over as the young of Machcera (Siliqua) patula^ to which it 

 bears a strong external resemblance." 



No further specimens seem to have been found. 



TEESUS, Gray. 

 103. Tresus Nuttalli, Conrad. 



Lufraria NvttaUi, Conr., .lourn. Acad. Nat. Sci. Phila., vol. vii., pt. 2, p. 2:io, 

 pi. xviii., tift-. 1 (1837). 



This is the clam of the North Pacific coast. It is very common on 

 all our sandy beaches and is an important article of food among the 

 Indians, who, in summer, collect and dry the animals for winter con- 

 sumption. A little crab. Pinnotheres f aba, Dana, tinds its lodging- within 

 the valves of this shell. 



THEACIA, Leach. 



10-1. Thracia curta, Conrad. 



Journ. Acad. Nat. Sci. Phila., vol. vii., pt. 2, p. 248, pi. xix., H^ S (1837). 



This shell has not yet been found in any numbers, though it seems 

 to be widely distributed. 



Dr. Dawson took one specimen in Virago Sound, Queen Charlotte 

 Islands, and a large single valve in Quatsino Sound. Dr. Newcombe 

 has dredged it alive in Clayoquot Sound and at Comox, and I have 

 dredged it alive at Departure Bay and have taken a few dead specimens 

 near Victoria. A valve from the last named locality measured 57 x 

 46 mm., being a little larger than the one from Quatsino Sound of 

 which Mr. Whiteaves gives the measurements (Trans. E. S. Can. 1886, 

 sec. iv., p. 123). 



105. Thracia beringi, Dall, MS. 



This species has long been known to Dr. Dall, and though not yet 

 described, I believe, has been distributed under the manuscri))t name 

 T. Beringi. 



In 1888, I dredged a large single valve (58 x 43 mm.) and a small 

 number of young living specimens of this species in Departure Bay. 

 These were all submitted to Dr. Dall who kindly determined them for 

 me as above. 



Sec. IW, 1895. 4. 



