Tue NeavTILus. 
VOL. x. MAY, 1896. No. 1 
NEW SPECIES OF LEDA FROM THE PACIFIC COAST. 
BY WM. H. DALL. 
The species of Leda from the littoral zone north from Panama 
are not numerous, though individuals are plenty in suitable locali- 
ties. Leda hamata Cpr. is only known from the Sta. Barbara 
Islands. Leda celata Hinds ranges from Bodega Bay to Lower 
California in 6 to 60 fms. Leda fossa Baird is known from Bering 
Sea to Puget Sound. Leda cuneata Sby., from Panama to Mon- 
terey and also in the Atlantic. Leda minuta Fabr., a circumpolar 
species, reaches south as far as Puget Sound on the Pacific. Omit- 
ting some Arctic and abyssal species, the above-mentioned five spe- 
cies include all hitherto recognized from the western coast of the 
United States. I am now able to add three well defined species to 
the list. 
Leda cellulita n. s. 
Shell solid, with a dull olive-gray epidermis, moderately convex, 
with subcentral, not prominent beaks, base profoundly arcuate, an- 
terior dorsal slope rounded, posterior straight or slightly concave ; 
posterior extreme bluntly pointed; escutcheon large, transversely 
striate ; lunule not differentiated but similarly striate; sculpture of 
fine sharp, concentric grooves with wider interspaces, less arcuate 
than the incremental lines; chondrophore small, triangular, not 
projecting, with 22 anterior and 16 posterior hinge teeth on the 
cardinal border. Height 10-5; diameter 7:2; length 15°5 mm. 
Puget Sound near Port Orchard, dredged by tue Young Natural- 
ists’ Society of Seattle, Wash. 
