. Bulletin of the British Museum (Natural History). PEBASIAN MOLLUSCAN FAUNAS 243 Dimensions. In mm. br hap h/br sa Fossil: PIMUZ312, Iquitos PIMUZ 315, Iquitos PIMUZ 317, Iquitos PIMUZ319, Iquitos PIMUZ 321, Iquitos 40° 37° 41° 33° 37° Remarks. Both Brot (1878) and von Ihcring (1902) largely repeated Reeve, thus contributing relatively little new infor- mation. For instance, B rot's figure of H. obesus Reeve is a copy of the original illustration. The bulk of Reeve's material was said to be fr
. Bulletin of the British Museum (Natural History). PEBASIAN MOLLUSCAN FAUNAS 243 Dimensions. In mm. br hap h/br sa Fossil: PIMUZ312, Iquitos PIMUZ 315, Iquitos PIMUZ 317, Iquitos PIMUZ319, Iquitos PIMUZ 321, Iquitos 40° 37° 41° 33° 37° Remarks. Both Brot (1878) and von Ihcring (1902) largely repeated Reeve, thus contributing relatively little new infor- mation. For instance, B rot's figure of H. obesus Reeve is a copy of the original illustration. The bulk of Reeve's material was said to be from Pernambuco (Recife) and shows strong links between the various nominal species that he described. Bernardi's type material of H. kochi has not been studied but the specimens figured in Reeve (1860) and Brot (1878) agree well with his original illustration (1856). Reeve's shells of H. kochi are also very close to the type series of his H. punctatus. Individual specimens in this series, in which the apical angle varies between 28° and 36°, may be linked with individual fossils from Iquitos (PIMUZ) originally identified by de Grcve (1938) as Semisinus sulcatus Conrad, and subsequently quoted in the synonymy of this species given by Parodiz (1969). These Iquitos fossils clearly belong here rather than 239a. 239b 242b Figs 238-242 Hemisinus kochi (Bcrnardi). Pcbasian; Iquitos, Peru; specimens previously identified by de Greve 11938) as Semisinus sulcatus (Conrad). 238, PIMUZ 317; shell figured by de Greve (1938: pi. 4, figs 21. 24) a. b, c, front, side. rear, all X 239. PIMTJZ 321; shell figured by de Greve (1938: pi. 4, fig. 18). a, b, front, rear, x 4. 240, PIMUZ 312; shell figured bj de Greve (1938: pi. 4, lips ::. 23) a. b, e. front, rear, and front to show colour patterning, all x 4. 241. PIMUZ 315; shell limited by de (ireve ( U»3S: pi 4. lis; I1'), a. b. front, rear. X 2. 242, PIMUZ 319; shell figured by de Grcve (1938: pi. 4, fig. 17). a. b, front, rear, x 4.
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