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Show 282 MR. E. A. SMITH ON SHELLS FROM [Feb. 15, This may result merely from difference of age. The largest specimen collected by Mr. Thomson is 19| millims. long and 9| broad. 12. BULIMUS NOTABILIS. (Plate XXXII. fig. 8.) Bulimus notabilis, E. A. Smith, Ann. & Mag. Nat. Hist. ser. 5, vol. vi. p. 427 (1880). Shell elongate-ovate, deeply and widely umbilicated, of a uniform light brown colour. Whorls 8 in number, slowly enlarging, moderately convex, sculptured with very fine, close-set, slightly oblique and feebly flexuous lirae or raised lines of growth. Suture simple, almost horizontal. Last volution convex, exhibiting a very faint indication of a median angulation or almost obsolete carina. Aperture irregularly ovate, subauriform, rather acuminate both above and at the base, where it is channelled, pinkish or pinkish brown within. Umbilicus broad, pervious to the apex, surrounded by an obtuse ridge. Peristome whitish, not thickened; outer margin (viewed laterally) oblique, scarcely arcuate, a trifle prominent in the middle, not reflexed or expanded ; columellar margin broadly expanded, arcuate, its upper extremity united to the superior termination of the outer lip by a thin callosity. Length A3 millims., diameter of last whorl 20 ; aperture 17\ long, 11 wide. Hab. Between Lake Nyassa and the east coast {Thomson). The peculiarity of the basal canaliculation of the aperture affords an interesting intermediate grade between this genus and Achatina. 13. BULIMUS (BULIMINUS) KIRKI, Dohrn. (Plate XXXII. fig. 9.) Buliminus kirkii, Dohrn, Proc. Zool. Soc. 1865, p. 232; Martens, Decken's Reisen in Ost-Afrika, vol. iii. p. 150. Hab. Between Lake Nyassa and east coast (Thomson). This species was originally collected by Dr. Kirk at Cabaceira in Mozambique, and subsequently by Mr. A. E. Craven at Magila. 14. ACHATINA HAMILLEI, Petit. (Plate XXXII. fig. 10.) A. hamillei, Petit, Journ. de Conch. 1858, vol. vii. p. 384, pi. 13. f. 3. Shell large, ovate, acuminate above ; spire whitish, striped obliquely with brown ; last whorl purplish, striped at intervals and covered with an olive epidermis. Sculpture granose, consisting of coarse oblique lines of growth, which are very coarse beneath the suture, crossed by spiral impressed lines. Whorls 8, moderately convex. Aperture inversely subauriform, a trifle longer than the spire, bluish white within. Peristome thin, margined within with purplish brown. Columella thickened, white, not very arcuate or contorted, somewhat abruptly truncated, united to the lip above by a thickish white callosity. Length 130 millims., diam. 6 2 ; aperture 69 long, 40 wide. Hab. Usambara (Dr. J. Kirk) ; West Africa {Petit). The spire of this shell is very like that of A. petersi, Martens. I he latter, however, is a smaller species, if the dimensions given by |