PLATE III. 
Cuspidaria obesa Loven, var.? 18.0. Page 295. 
Cuspidaria Jeffreysi Dall ; 15.0. Page 295. 
Cuspidaria arcuata Dall; 12.5; inside. Page 296, 
Same, outside. 
Myonera limatula Dall; 11.15. Page 304. 
Cardiomya pectinata Cpr., var. beringensis Leche [N. W. coast of Amer- 
ica], 6.0. Page 296. 
Myonera lamellifera Dall; 12.5. Page 304. 
Leiomya (Plectodon) granulata Dall; 11.0. Page 300. 
Cardiomya costellata var. corpulenta Dall; 14.0. Page 298. 
Cardiomya striata Jeffreys; 19.0. Page 298. 
