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Show 1899.] FROM BRITISH CENTRAL AFRICA. 589 it is distinct from all he has described, but comes near his S. pin-guis, being distinguished by its broader whorls and the different form of the upper part of the spire. 34. SUCCINEA sp. inc. Hab. Mount Chiradzulu. One dead specimen. 35. ACHATINA IMMACULATA Lamarck, var. Achatina immaculata, Lamarck ; Ferussac, Hist. Nat. Moll. pl. cxxvii. Hab. Nyasaland. None of the specimens hitherto examined are quite like Fe'rus-sac's figure, in which the aperture is unusually long. Tbe spire also is less conical than in specimens from Cape Delagoa in the British Museum or in the specimens from Nyasaland. The latter have the columella bluish white instead of pinkish, and are of a darker colour, but otherwise are fairly normal. A. layardi Pfeiffer is a variety of this species, rather more profusely spotted than the type. 36. ACHATINA PANTHERA (Ferussac). (Plate XXXIV. fig. 1.) Achatina panthera, Ferussac ; Reeve, Conch. Icon. fig. 12. Hab. Zomba. The specimens from this locality are small and rather slender in comparison with the typical form figured by Ferussac (Hist. Nat. Moll. pl. 126). The largest specimen is only 125 millim. in length, although consisting of 8k whorls, the number possessed by a large typical example from Mozambique 157 millim. long. A very small specimen, which probably would not have grown larger, has a length of only 93 millim. 37. ACHATINA GLUTINOSA Pfeiffer. Achatina glutinosa, Pfeiffer, Conch.-Cab. ed. 2, p. 360, pl. xliv fig. 1. Achatina petersi, Martens, Novitat. Conch, vol. iii. p. 452, pl. xcix. figs. 13-15. Hab. Zomba. I am unable to find any distinguishing characters between this species, said to have been originally obtained in West Africa, and A. petersi from Mozambique; and I am of opinion that the locality " W . Africa" is one of the many errors of this kind occurring in Mr. Cuming's collection. The species is remarkably constant in coloration, but varies somewhat in ventricosity. The type is 97 millim. in length and 49 in diameter, whereas a more ventricose specimen is the same length, but 6 millim. broader. A smaller but adult example from Zomba (88 millim. long and 45 wide) is rather more solid than the typical form. |