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Show 1899.] FROM BRITISH CENTRAL AFRICA. 587 longit. tolius j- cequans; peristoma tenue, simplex, margine columellari refiexo, umbilicum mediocrem partim obtegente. Longit. 21 millim., diam. 15 ; apertura 12 longa, 7 lata. Hab. Nyika Plateau, 7000 feet, Mount Chiradzulu and Zomba Plateau, 5000 feet. Remarkable on account of the spirally lirate protoconch, the difference of sculpture of the normal whorls being sharply defined. 29. BULIMINUS (CONULINUS) METULOIDES, sp. nov. (Plate XXXIII. fig. 43.) Testa conica, anguste umbilicata, tenuis, pallide fusco-cornea, nitida, oblique tenuiter striata, ad apicem obtusa; anfractus 6-7, rotundati, regulariter accrescentes, sutura leviter obliqua sejuncti apertura fere perpendicularis ; peristoma tenue, simplex, margine columellari expanso et refiexo, umbilicum semiobtegente. Longit. 10 millim., diam. 6. Hab. Zomba Plateau, 5000 feet. Closely allied to B. metula Martensl, but, although larger, consisting of fewer whorls. Professor v. Martens writes concerning specimens sent for his examination :- " Very near to m y metula, but a little broader and lower than all m y specimens. Also the umbilicus is a little broader in m y examples." 30. BULIMINUS BOIVINI (Morelet). Glandina boivini, Morelet, Series Conch, p. 72, pl. v. fig. 5. Bulimus (Cerastes) mamboiensis, Smith, Ann. Mag. Nat. Hist. 1890, vol. vi. p. 153, pl. v. fig. 7. Hab. Nyika Range, 7000 ft., Mount Chiradzulu, 6000-7000 ft., Masuku Plateau, 6000-7000 ft., Malosa, 6000 ft., Zomba Plateau, 5000 ft. This species is very variable in size and form judging from the series of specimens from the above localities. It also has a wide range, the type being found to the north at Mombasa. Dr. E. von Martens2 has erroneously placed the Buliminus ptychaxis as a synonym of this species, which does not possess the distinct columellar fold which is characteristic of that form from TTjiji. The following measurements will show the great variation in size which occurs in the present species :- Length. Width. Length of aperture. mm. mm. mm. (1) 25 10 9 (2) 20 10 8 (3) 14 7| 6 Number 1 consists of 8| whorls, no. 2 of 7| whorls, and no* 3 of 6|, all appearing equally adult. 1 Weichth. Deutsch-Ost-Afrikas, p. 66, pl. iii. fig. 27. a Beschalte Weichth. Deutsch-Ost- Afrikas, p. 61. |
