Pecten asper G. B. Sowerby II, 1842
SOWERBY II, G. B. 1842. Monograph of the genus Pecten. In: G. B. Sowerby II (Ed.), 1842-1847, Thesaurus conchyliorum; or, monographs of genera of shells, 1 (2): 45-78, pls. 12-20. London. [p. 50, pl. 19, figs. 196, 197]
«14. P. ASPER. (pl. xix. f. 196, 197.) nobis.
T. sub-rotundatâ, sub-compressâ; auriculis latis, obsoletè striatis, valvae dextrae ad marginem serratis; valvâ sinistrâ sub-complanatâ, versus umbones paululùm elevatâ; costis octodecim, angulatis, prope marginem bi-angulatis, angulis serratis, interstitiis angustis, planis, concentricè striatis: valvâ dextrâ ventricosâ, costis octodecim, rotundatis, ad umbonem angulatis, concentricè striatis; interstitiis angustis, planis: colore valvae superioris pallidè rubro, lineis concentricis minutis strigato, interstitiis rubris, valvae inferioris albo, lineis paucis, rubris, concentricis; costis rubro interlineatis, umbone rubrotincto. Long. 1.40.; lat. 0.30.; alt. 1.20.; poll. More flattened than any of the preceding species; the auricles are nearly equal, flat and broad, those of the lowervalve serrated at the margin; the upper valve is nearly flat,and very slightly elevated near the umbones; the ribs, eighteen in number, are angulated near the umbones, and the tops flattened so as to form a double angle near the margin; the angles are finely serrated; the lower valve rather ventricose, with the ribs more rounded near the margin than in the other; the interstices in both valves are narrow and flat; a general tint of dull red is made in the upper valve by minute concentric touches on the ribs, and bands in the interstices these being less numerous and more distant in the lower valve, leave it nearly white. New Guinea. (Mr. Hinds.)»
GEORGE BRETTINGHAM SOWERBY II, 1842
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G. B. Sowerby II, 1842, plate 19.
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