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  • 1
    Publication Date: 2024-01-12
    Description: A drawing of two Indian elephants, signed "P. Camper f. 10 Sept. 1786", in red chalk or crayon, was found in the archives of the Rijksmuseum van Natuurlijke Historie in a manuscript by T.G. van Lidth de Jeude (1788-1863). Van Lidth de Jeude, professor at Utrecht university, obviously intended to use it as an illustration in his projected manual of the mammals in Dutch. The drawing is almost completely identical to an unsigned drawing in the Artis library, one of a series of three.\nThe Leiden drawing is traced back to H. Schlegel, director of the Leiden museum 1858-1884, who most probably obtained the Van Lidth de Jeude papers upon his death. Van Lidth de Jeude is likely to have acquired the Camper drawing from G.J. van Klinkenberg (1768/69-1841), who in turn must have got it from the custodian of the Stadholder\'s collection, when he (Prince William V) was already in exile in England. The Camper drawings in the Artis library are also traced back to Van Lidth de Jeude and Van Klinkenberg (via the second Vrolik sale in 1868, and the auction of "Dr. P...." in 1887; "Dr . P...." very probably is Dr. F.P.L. Pollen, 1842-1886, who in the years 1862-1866 materially contributed to the zoological exploration of Madagascar). It is argued that because of the presence of the signature, the Leiden drawing is the original and the Amsterdam drawing a copy, either done by Camper himself or somebody else. Some drawings in the Rijksprentenkabinet (Amsterdam), presented in 1940 by the surgeon Dr. J.C.J. Bierens de Haan (1867-1951) may be preliminary sketches for the red crayon pictures here discussed.
    Keywords: Proboscidea ; Indian Elephant ; Petrus Camper ; history of zoology ; history of zoological gardens ; Rijksmuseum van Natuurlijke Historie
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
    Publication Date: 2024-01-12
    Description: Gulella adami spec. nov. is described from a classical West African locality, Assini in the Ivory Coast (C\xc3\xb4te d\'Ivoire). It is most unusual in showing two superficial parietal processes, which may also be interpreted as a double angular lamella, in the aperture of the shell. The shell closely resembles that of various Enidae in SE Europe and adjoining areas around the Mediterranean, thereby providing a striking example of convergent evolution.
    Keywords: Gastropoda ; Pulmonata ; Streptaxidae ; Gulella ; new species ; Enidae ; convergent evolution ; Ivory Coast ; West Africa
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
    Publication Date: 2024-01-12
    Description: The genus Negulus is reviewed; only four Recent species, restricted to continental Africa, are recognized.\nThe genus is extinct in Europe, being only recorded from Tertiary deposits. A key to the shells of the Recent species (all figured) is supplied. The anatomy is as yet unknown. A sinistral shell of N. abyssinicus is described from among a series of paralectotypes in the Leiden Museum, the first such abnormality in the genus (figured). A fair amount of shell material has become available (among which some historical specimens) so that metric data may be compared with greater confidence. Recent occurrence is established/confirmed for Eritrea, Ethiopia, Sudan, Kenya, Tanzania, Zaire, Zambia, Mala\xc5\xb5i, and Bioko (Fernando Poo). The small size of the shell necessitates sampling forest leaf litter, a technique that has not been widely applied in Africa; undoubtedly the genus occurs much more widely in the Afrotropical Region. Pupa obliquicostulata from St. Helena Is. is removed from the genus because of the presence of apertural dentition.
    Keywords: Gastropoda ; Pulmonata ; Vertiginidae ; Negulus ; Africa ; St. Helena Is. ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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