360 
SUPPLEMENT. 
1. Evcutus#A PANDORIDA. 
The shells equivalve, equilateral, gibbose; their umbones 
recurved; the hinge with rather unequal teeth in the left 
valve, and with a miaute thick lamella placed before the um- 
bones in each valve. 
2, EUCLUSZA FRAGILIS. 
The shells smooth, pale testaceous or glossy, shining, sculp- 
tured with concentric striole. Length seven lines; height 
six lines. 
This species inhabits the deep sea on the western coasts of 
Devon in deep water, on a sandy bottom. 
