of British Columbia,. 
49 
X. ( Crypto don) sericata Cpr. 13, 21. 
Esquimalt, in mud, plentiful, (C.F.N.) Dep. Bay, (G.W.T., C.F.N.) 
Comox, and Clayoquot Sd., (C.F.N.) Quatsino Sd., and Q.C.I., (G.M.D.) 
X. ( Crypt odon) flexuosa Mont. 
Dep. Bay, (G.W.T.) St. of Georgia, Quatsino Sd., and Q.C.I., (G.M.D.) 
Family DIPLODONTIDJE 
Genus Diplodonta Brown 
l). orbeJla Gld. 62. 
Dead, Dep. Bay and Vesuvius Bay, (G.W.T., C.F.N.) Comox, (W. H., 
C.F.N.) Malaspina Inlet, North or North-west Coast of V.I., and Q.C.I., 
(G.M.D.) Low water to 20 fms. Mud. 
Family KELLIADiE 
Genus Kellta T nr ton 
K. Xifiperonsli Desh. 13. 
Vic., Dep. Bay, (G.W.T., C.F.N.) Comox, large and thick, (W.H., C.F.N.) 
Clayoquot Sd., (C.F.N.) Malaspina Inlet, (G.M.D.) Usually hidden in 
mud in dead shells. Low water to 20 fms. and upwards. 
K. I/aperonsii, var. Chironii, Cpr. 13, 19. 
St. of Georgia and Johnstone St. At low water, living, (G.M.D.) 
K. sitborbicularis Mont. 
Vic., (G.W.T.) Q.C.I., (G.M.D.) 
Genus Lasea Leach 
X. rubra Mont. 
Vic., (G.W.T.) On kelp. 
Genuo Tellimya Brown 
T. tmnida Cpr. 13, 21. 
Vic., G.W.T., C.F.N.) Oak Bay, (Prof. Macoun). Gordon Plead, V.I. 
Clayoquot and Comox, (C.F.N.) Q.C.I., (G.M.D.) Low water to 20 fms. 
Sand or mud. 
Genus Pythina 
X*. rugifera Cpr. 13, 21. 
Puget Sound, (Kennerley.) 
