86 COCHLITOMA. 



der plants on the downs, especially large-leaved species of 

 Mesembryanthemum, less common in the forests (Krauss). 



Bulla achatina BORN, Test. Mus. Gees. Vind. pi. 10, f. 1 

 (good). Bulimus zebra BRUG., Encycl. Meth. i, p. 357, no. 

 100. PERRY, Conchology pi. 30, f. 3 (copied from Born!). 

 Helix zebra FEE., Hist. pi. 133. Achatina zebra LAM., An. 

 s. Vert, vi, p. 128. REEVE, Conch. Syst. ii, pi. 179, f. 17; 

 Conch. Icon, v, pi. 7, f. 23. PFR., Monogr. ii, 250; iii, 482; 

 iv, 600 ; vi. 212 ; Conchyl. Cab. p. 291, pi. 2, f . 3 ; pi. 23, f . 1 

 (small form). DESH., in Fer. Hist, ii, p. 156. KRAUSS Die 

 Siidaf. Moll. p. 80, with var. granulata (1848). SMITH, Ann. 

 and Mag. N. H. (6) vi, 1890, p. 392. STURANY, Catalog, 

 p. 58 [594]. A. chemnitziana PFR., Symbolae ii, p. 132, 1842, 

 no descript., based upon Lam. sup. cit. Achatinus zebra 

 MONTF. Conch. Syst. ii, p. 419 (?? pi. 418). Achatina 

 zebra Ch., de Roissy, BECK, Ind. Moll. p. 75, with var. 

 microstoma = Chemnitz, C. Cab. ix, f. 1014. SEMPER, 

 Reisen, Landmoll., p. 144, pi. 12, f. 22 (uterine young). 

 A. borniana BECK, I. c. (1837). A. capensis ALBERS, Die 

 Hel., 1861, p. 203, note 4. A. tigrina Cuming, BECK, Index, 

 p. 75, based on Fer. Hist. pi. 133. Ampulla zebra in part, 

 and A. quagga in part, BOLTEN, Mus. Bolt. p. 111. 



This handsome Cape species is frequently seen in a more 

 or less artificial condition of polish, the effect of " cleaning " 

 with acid. It is not known with certainty what form of the 

 species Bruguiere had, but from his selection of Bern's en- 

 graving as "good," the only one so distinguished we may 

 well take that to be typical zebra. That Bruguiere included 

 fulica also in his conception of the species is shown by his 

 citation of Seba's figures of that shell, and by the statement 

 that he had found it living in Madagascar. 



The typical zebra therefore will include shells with the 

 spire rather long and slender of which Reeve's figure (copied 

 on pi. 28, fig. 39) is an extreme example. A. borniana is 

 identical. "In fresh shells the first four whorls are uniform 

 yellowish-white, the fifth and sixth whitish and brown, the 

 two last are always banded brownish-yellow and chestnut- 

 brown. The first 6 whorls are more or less granulose, but 



