The two Chinese loaches of the genus Cobitis
John Treadwell Nichols, Clifford Hillhouse Pope
Abstract
John Treadwell Nichols, Clifford Hillhouse Pope
Abstract
and Dabry de Thiersant, 1874, as subspecifically distinct from C. t¶enia which he credits to northern Asia as well as to Europe. Fowler, 1924, synonymizes it with tknia; but Nichols and Pope (in press), recognize this and another race of C. tenia from China. Kreyenberg and Pappenheim, 1908, identify all their Yangtze material with Cobitis [Lepidocephalichthys] macrostigma Dabry de Thiersant, 1872, from lakes of central China. However, Mr. Clifford H. Pope's collections from Tungting Lake, Hunan, adjacent to the Yangtze, contain two distinct loaches. One of these is apparently a race of C. tzenia and is here identified as sinensis; the other is clearly referable to macrostigma. A drawing by Miss Olive Otis of a specimen of each from Tungting of approximately the same size (sinensis 110 mm., macrostigma 115 mm., to base of caudal) is here reproduced to show the differences. C. macrostigma has a longer peduncle; smaller scales, about 135 versus 100 to 110 before the dorsal; dorsal origin midway between end of snout and middle of peduncle, versus base of caudal. There seems to be a difference in the lips, the free lip between maxillary and mental barbels pointed versus broad, squarish. Cobitis tinia sinensis Sauvage and Dabry de Thiersant
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and Dabry de Thiersant, 1874, as subspecifically distinct from C. t¶enia which he credits to northern Asia as well as to Europe. Fowler, 1924, synonymizes it with tknia; but Nichols and Pope (in press), recognize this and another race of C. tenia from China. Kreyenberg and Pappenheim, 1908, identify all their Yangtze material with Cobitis [Lepidocephalichthys] macrostigma Dabry de Thiersant, 1872, from lakes of central China. However, Mr. Clifford H. Pope's collections from Tungting Lake, Hunan, adjacent to the Yangtze, contain two distinct loaches. One of these is apparently a race of C. tzenia and is here identified as sinensis; the other is clearly referable to macrostigma. A drawing by Miss Olive Otis of a specimen of each from Tungting of approximately the same size (sinensis 110 mm., macrostigma 115 mm., to base of caudal) is here reproduced to show the differences. C. macrostigma has a longer peduncle; smaller scales, about 135 versus 100 to 110 before the dorsal; dorsal origin midway between end of snout and middle of peduncle, versus base of caudal. There seems to be a difference in the lips, the free lip between maxillary and mental barbels pointed versus broad, squarish. Cobitis tinia sinensis Sauvage and Dabry de Thiersant
Key concepts: Genus, Zoology, Biology, Geography, Genealogy, History