. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 439 Described from Nyasaland and collected by myself in Palm Kloof, north bank of the Zambesi at Victoria Falls, but not on the southern side. Neuville and Anthony have recorded this species from Abyssinia, but it appears hardly possible that their identification can be correct. The clear, strong spiral sculpture of the pro- toconch, changing abruptly into weaker trans- verse striation on the later whorls, is only com- parable among the large
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 439 Described from Nyasaland and collected by myself in Palm Kloof, north bank of the Zambesi at Victoria Falls, but not on the southern side. Neuville and Anthony have recorded this species from Abyssinia, but it appears hardly possible that their identification can be correct. The clear, strong spiral sculpture of the pro- toconch, changing abruptly into weaker trans- verse striation on the later whorls, is only com- parable among the larger African species with that of Krapfiella Preston, but Krapfiella has a a broad apex and an elongate shell, while ss.—Limi- Limicena has a narrow apex and a bulimoid cena nyasana (Smith), shell. Newly hatched specimens of this species Palm K^ Victoria crawl about the superficial rocks in Palm A Rec0nstructed Kloof in large numbers, in contrast to the shell, actual size; the burrowing habits of their parents, and may ^2^ easily be mistaken at first glance for a small b. Apical sculpture, form of Ligatella. highly magnified. Tribe ELASMOGNATHA. Jaw with broad median projection extending backwards from its upper part. Family SUCCINEIDAE H. G. Bellars, 1858 (Ill/Cat. Brit. Land and Freshwater Shells, p. 20). Although I have not repeated in the present work the references to family authorship given in my Eeference List, that cited above ante- dates by so many years previous claim to the establishment of this family on a distinct footing that it appears to deserve special mention. Apart from a few forms which have more degenerate shells and do not occur in South Africa, all the members of this family are commonly placed in the genus Succinea, which is sufficiently treated below. Genus Succinea Drap., 1801 (Tabl. Moll. Ft., p. 32). Type S. amphibia Drap. (putris Lin.). Shell ovate, horn-coloured or amber, not umbilicate, spire usually short, body whorl large, whorls 4 or le
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