. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 140 ANNALS OF THE SOUTH AFRICAN MUSEUM nerves into the nostril, as it still does in the lizards Cordylns polyzonus (Van Pletzen, 1946) and Monopeltis capensis (Kritzinger, 1946). In these two species the ramus medialis nasi V, accompanied by a small artery, passes through a foramen in the anterior tip of the septomaxillary. In Anniella pulchra, however, the blood-vessel and nerve are accommodated in a deep groove on the dorsal surface of the bone (Toerien, 1950). Williston (1925) claims that the prim
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 140 ANNALS OF THE SOUTH AFRICAN MUSEUM nerves into the nostril, as it still does in the lizards Cordylns polyzonus (Van Pletzen, 1946) and Monopeltis capensis (Kritzinger, 1946). In these two species the ramus medialis nasi V, accompanied by a small artery, passes through a foramen in the anterior tip of the septomaxillary. In Anniella pulchra, however, the blood-vessel and nerve are accommodated in a deep groove on the dorsal surface of the bone (Toerien, 1950). Williston (1925) claims that the primitive position of the septomaxillary is on the postero-lateral rim of the external naris, a position corresponding to that occupied by the bone in Pristerodon buffaloensis. In Sphenodon where the septo- maxillary occupies a corresponding position, it is solely concerned with the support of the floor of the Organ of Jacobson and with the formation of the side wall of the vestibule (Fuchs, 1911). According to Fuchs the same conditions obtain in Dasypus. Whether Pristerodon possessed a vomero-nasal organ, which, as in Sphenodon, opened into the choana, or whether like adult Chelonians, crocodilians and birds, it lacked one (Romer, 1949) is difficult to say, but there are no separate openings in the palate anterior to the choanae which could be associated with their ducts. PR. ,SPK. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
