COCHLITOMA. 87 



the lower part of the penult, and the entire last whorl are 

 always smooth and glossy. Length 4, diam. 2% inch." 

 [about 100x56 mm.J. (Krauss). 



Melvill and Ponsonby place fulgurata, kraussi and obesa as 

 varieties under A. zebra (Proc. Malac. Soc. Lond. iii, p. 179). 



Var. obcsa Pfr.' PI. 27, fig. 35. 



This name may be applied to the short,^Gompact form of 

 the species, such as the specimen figured, which however has 

 the shortest spire of any adult shell in the series before me. 

 The aperture is between .6 and .7 of the length. The sculp- 

 ture does not differ from that of typical zebra. 



S. Africa. Pfeiffer's locality "West Africa" is doubtless 

 erroneous. 



A. obcsa PFR., Malak. Bl. i, 1854, p. 224; Monogr. iv, 600; 

 vi, 212; viii, 273. Helix zebra var. ? an juv. ? FEB., His- 

 toire, pi. 133, middle figure. 



11. C. KRAUSSI (Reeve). PL 16, figs. 10, 11; PL 27, fig. 36. 



Shell ovate, slightly ventricose, rufous-chestnut, covered 

 with a hard glossy cuticle ; whorls, except the last, longitudin- 

 ally streaked, the streaks white, sometimes straight, sometimes 

 sinuous, distant, and extending to a variable length below the 

 suture. Spire rather short, the apex obtuse. Aperture 

 ovate, white. Length 2.75, diam. 1.5 inch. (Eve.}. 



S. Africa : right bank of the Koega river close to its mouth 

 at Algoa Bay, under large-leaved bushes of Mesembryanthe- 

 mum (Krauss). 



Achatina kransii REEVE, P. Z. S. 1842. p. 55; Conch. Syst. 

 ii, p. 88, pi. 179, f. 19. A. kraussi PFR., Symbols ii, p. 133; 

 Monogr. ii, p. 250; iii, 483; iv, 601; vi, 212; Conchyl. Cab. p. 

 329, pi. 23, f. 2. KRAUSS, Die Siidaf. Moll. p. 81. REEVE, 

 Conch. Icon, v, pi. 6, f. 21 (1849). SMITH, Ann. and Mag. 

 N. II. (6), vi, p. 393. MARTENS, Sitzungsber. Gfes. nat. 

 Freunde zu Berlin, 1890, p. 86. 



The shell is smaller than C. zebra, far smoother, the de- 

 cussation or granulation being confined to the upper whorls 

 and rather weak there. The slightly crenulate suture is white 



