Chlamys smegmatus Dall, 1926
DALL, W. H. 1926. A new Pecten from the Loochoo Islands. The Nautilus, 40: 67.
«PECTEN (CHLAMYS) SMEGMATUS n. sp.
Shell compressed, glistening, whitish above with reddish flecks, darker and more crowded distally; a few opaque white zigzag markings near the umbo; lower valve white with purplish flush near the umbo and reddish margin on the wings; sculpture of the upper valve with nine low subangular whitish rays with one smaller ray in the interspaces with one or two small threads on each side of it; wings nearly smooth, oblique, the left wing much the largest; sculpture of the lower valve of numerous low undulated riblets with one or two small threads in the interspaces; the sculpture grows feeble toward the umbo; byssal notch wide and deep, ctenolium with eleven denticulations; height of shell, 33; width of shell, 30; of hinge-line, 17; diameter, 7 mm.
Loochoo Islands; Coll. Thaanum, No. 9455. This is nearest some of the forms of Pecten sqiiamosus Gmelin, but has a different sculpture with no indication of raised scales. The surface has a greasy sheen. A single specimen was obtained by Messrs. Thaanum and Langford, during their collecting trip of 1925. WILLIAM HEALEY DALL, 1926
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