OCR Text |
Show 1880.] SHELLS FROM THE TRANSVAAL. 617 ACHATINA SMITHII, sp. nov. (Plate LVII. fig. I.) Shell ovately conical, thin, semitransparent, striated by the lines of growth, which, upon the upper whorls and upper part of the last whorl are crossed by coarse spiral stria?, producing a granulose striated appearance; whorls 8, somewhat convex, the last occupying about half the entire shell; upper whorls of a dull orange-yellow, last whorl of a greenish yellow, the whole marked with numerous irregularly waved stripes of a burnt-sienna colour ; spire somewhat elongated, apex obtuse ; suture deep ; aperture elliptically ovate, interior having a faint purple lustre and showing the stripes through the shell; columella arcuate, terminating in a small truncation ; peristome simple. Length 55 millims., greatest breadth 27, height of aperture 29-f, breadth of aperture 15. Locality. Leydenburg, Transvaal. I propose to name this shell after Mr. E. A. Smith, of the British Museum. CYCLOSTOMA KRAUSSIANUM, Pfr. P. Z.S. 1852, p. 64; Chemn. 2nd ed. p. 331, pl. 43. figs. 17, 18. Very plentiful at Pilgrim's Rest, Transvaal. SUCCINEA DELALANDI, Pfr. Zeitschr. f. Malak. 1851, p. 28; Chemn. 2nd ed. p. 37, pl. 3. figs. 38-40. In great numbers on the banks of the Oliphant's River, Transvaal. LIMN^EA NATALENSIS, Krauss, Siidafr. Moll. p. 85, pl. v. fig. 15; Reeve, Conch. Icon. pl. vii. sp. 46. Not very plentiful at Pilgrim's Rest, Transvaal. PHYSA LIRATA, sp. nov. (Plate LVII. fig. 10.) Shell globosely conical, perforate, very thin, shining, vitreous and semitransparent, regularly lirate, very pale horn-colour; spire somewhat produced, apex not very acute ; whorls 4, the last very convex and globular; aperture inversely auriform ; columella but little curved, exhibiting no fold, considerably reflexed over the umbilicus, which is small but deep. Length 9*9 millims., greatest breadth 7*2, height of aperture 7, breadth of aperture 4. Locality. Mooi River, Transvaal. Plentiful. This species is remarkable for the regularity of the lira?. ANCYLUS TRANSVAALENSIS, sp. nov. (Plate LVII. fig. 11.) Shell broadly ovate, horny brown, varying from light to dark, very finely and regularly concentrically striated and also faintly radiately striated ; apex somewhat rounded, rather nearer the posterior extremity, a little dextrally recurved; extremities well rounded. In young specimens the radiating striae are very conspicuous. Length 7*5 millims., breadth 5*3, height 3*2. Locality. Mooi River, Transvaal. Plentiful. This species differs from A. coffer, Krauss, in its larger size, the PROC. ZOOL. Soc-1880, No. XLI. 41 |