368 APPENDIX. 
CARDITD. 
Cardium corbis. (Mart.) Esquimalt Harbour, dug from sand between 
tide marks; grows to a great size, and is an important article 
of Indian diet. 
Leda fossa, (Baird: Nov. Sp.) 
Testa elongata, ovali, antice multo breviore, rotun- 
data, postice elongata, in rostrum subacutum producta, 
transversim undulato-costata, in latere antico fossa trans- 
versa notata; umbonibus prominulis, margine ventrali 
rotundato; intus levi; epidermide tenui, lutescente, 
nitida induta. 
This little shell is of an elongate form, much reduced 
posteriorly ; and near the anterior extremity it is 
marked by a longitudinal depression or pit, upon which 
the ribs are nearly obsolete. Long. rather more than 
dinch; lat. rather less than }inch.—Hab. Esquimalt 
Harbour, Vancouver Island; dredged in from 10 to 15 
fathoms water, by Dr. Lyall, of H.M.S. ‘Plumper.’ 
(Brit Mus.) 
PHOLADIDZ. 
Teredo fimbriata. (Jeff.) Nai-ni-mo Harbour; very destructive to 
wood piles. Some pieces of wood in British Museum are 
honeycombed, and only under water 4 months. 
SAXICAVIDE. 
Saxicava rugosa. (Lamak.) Esquimalt Harbour, between tide marks. 
Crassatella Esquimalti. (Baird: Nov. Sp.) 
Testa parva, cordato-trigona, crassiuscula, olivacea, 
transversim undato-plicata, antice producto-rotundata, 
