Pecten inaequivalvis 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. 193-195]
«15. P. INAEQUIVALVIS. (pl. xix. f. 193 to 195.) — ? Portland Catalogue.
T. sub-rotundatâ, sub-compressâ, obliquâ, posticè expansâ, concentricè striatâ; auriculis sub-æqualibus, parvis; anticis minoribus; valvâ sinistrâ sub-complanatâ, versus umbones paululum elevatâ, costis octodecim, sub-angulatis, elevatis; interstitiis angustis, planis; valvâ dextrâ ventricosâ, costis octodecim, elevatis, rotundatis, prope marginem sub-quadratis; interstitiis, angustis, planis; colore valvæ superioris griseo, brunneo-nigrescente aboque maculato; valvæ inferioris albo-rufescente; costis fusco-maculatis; lateribus griseo-maculatis. Variat valvâ inferiori rubro-maculatâ. Long. 1.30.; lat. 0.50.; alt. 1.20.; poll. This species, as well as the last, presents a medium between those with the deep lower valve, and those which have both valves deep, the upper valve of this being rather ventricose in the centre. It is a thicker shell than the last, with the auricles much smaller, and on the whole more ventricose. Some young specimens were brought from the Philippine Islands by Mr. Cuming.» GEORGE BRETTINGHAM SOWERBY II, 1842
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G. B. Sowerby II, 1842, plate 19.
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