Pecten (Chlamys) multirugosus Gale, 1928
GALE, H. R. 1928. West Coast species of Hinnites. Transactions of San Diego Society of Natural History, 5 (9): 91-94. [p. 92]
«Pecten (Chlamys) multirugosus, new species
Lima gigantea Gray, Annals of Philosophy, new series, Vol. 9, p. 139, 1825; Wood, Catalogue Supplement, pl. 2, fig. 7, inedited, 1825 or 1826 (fide Gray), not Plagiostoma ( = Lima) gigantea Sowerby, Mineral Conchology of
Great Britain, Vol. 1, p. 176, pl. 77, 1812. Hinnita gigantea Gray, Annals of Philosophy, new series, Vol. 12, p. 103, 1826. Hinnites giganteus Gray, Sowerby, Zoological Journal, Vol. 3, p. 70, 1827; etc. Hinnita poulsoni Conrad, Journal of the Academy of Natural Sciences, Philadelphia, Vol. 7, p. 182, pi. 14, October, 1834, not Pecten poulsoni Morton, Synopsis of the Organic Remains of the Cretaceous Group of the United States, p. 59, pl. 19, fig. 2, Philadelphia, published early in 1834 (the preface dated January 1). ?Pecten comatus Valenciennes, Voyage of the Venus, pl. 18, fig. 2, Paris, 1846, not Pecten comatus Minister in Goldfuss, Petrifactae Germaniae, Ed. 1, Vol. 2, pt. 4, p. 50, pl. —, fig. —, 1834; Ed. 2, p. 47, pl. 91, fig. 5, 1862. Pecten (Hinnites) giganteus Gray, Arnold, Professional Paper 47, U.S. Geological Survey, p. 93 in part, pl. 29, figs. 2, 2a, not fig. 1, 1906; etc. Both Lima gigantea (Sowerby) and Pecten poulsoni Morton are well-known species. It is unfortunate that Gray originally referred his species to the genus Lima which contains an earlier described species of the same name. This fact has heretofore been overlooked. "The principle of the Rule of Homonyms is that any properly published identical name of later date is 'stillborn and cannot be brought to life'." "It is stillborn and cannot be brought to life even when the species is placed in another genus." [2] Pecten multirugosus is virtually a new name for the common Pliocene to Recent West Coast species formerly known as Pecten (Hinnites) giganteus (Gray); but in order to avoid any questions about the location or identity of the original types, the species is described as new and a new type is cited. The type is a Recent specimen from San Diego and is now No. 5 in the type collection of the San Diego Society of Natural History. There are also two paratypes (Nos. 2978 and 2979) at the California Academy of Sciences, and another in the Oldroyd Collection at Stanford University. The young of this species is a typical Chlamys up to the size of 20 or 30 mm. The left valve resembles closely the left valve of Pecten hastatus Sowerby, or the young of some specimens of Pecten squamatus Gmelin from Japan, being sculptured with small radiating ribs, every fourth or fifth raised above the others and covered with spines. It is about the shape of P. squamatus but is slightly more circular than P. hastatus. The right valve does not have the high paired ribs of P. hastatus, but has low ribs, flattened on top, nearly all the same size with only occasionally a slight accentuation of every third. As soon as the young Chlamys assumes a sessile position, the growth becomes very irregular, influenced considerably by the shape of the object to which it is attached, the ribs become coarser and spinose, and the shell thickens rapidly, oyster-like, especially the right (the lower) valve which may in the process develop a greatly elongated resilial pit.» [2] See Opinion 83 of the International Commission on Zoological Nomenclature, Smithsonian Miscellaneous Collections, Vol. 73, p. 10, 1925 ; or the summary of Opinion 83, Proceedings of the Biological Society of Washington, Vol. 39, p. 102, July 30, 1926. HOYT RODNEY GALE, 1928
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Ostrea gigantea; W. Wood, 1828, Supplement to the Index testaceologicus or catalogue of shells, plate 2, figure 7 (Ostrea).
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