COCHLITOMA. 85 



is not described in the author's diagnosis. Besides in the 

 characters already referred to, this species also differs from 

 A. rhabdota in the form of the aperture. A. crawfordi More- 

 let from Port Elizabeth, is also very similar in general outline, 

 but is somewhat thinner, finely granulated, and with lighter- 

 colored markings (Smith). 



9. C. PULGURATA (Pfeiffer). PL 27, fig. 34. 



Shell conic-ovate, thin; granulated by longitudinal striae, 

 close above, obsolete on the last whorl, and spiral lines. 

 Corneous-buff, ornamented with wide, blackish, zigzag streaks. 

 Spire conic, obtuse; whorls 6%, the upper ones a little con- 

 vex, the last swollen, granulated by a few spiral lines below 

 the suture, nearly smooth below the middle. Columella blue, 

 scarcely arcuate, abruptly truncated above the base of the 

 elliptical-semioval aperture. Peristome simple, unexpanded. 

 Length 67, diam. 36, apert. 42 mm. long, 21 wide in the 

 middle (P/r.). 



West Africa. 



Achatina fulgurata PFR., Proc. Zool. Soc. Lond. 1851, p. 

 258 ; Monographia iii, p. 486 ; Conchyl. Cab. p. 319, pi. 26, f . 1. 



This species may belong near A. studleyi. Description 

 and figure from Pfeiffer. 



10. C. ZEBRA (Bruguiere). PL 28, fig. 39. 



Shell ovate-conic, rather thin but strong; under a thin 

 yellow cuticle it is white, closely striped with dark brown, the 

 stripes narrow, usually about equal to their white intervals, 

 vertical, and slightly dislocated in places. Surface of the 

 last whorl smooth except just below the suture, where it is 

 granose. Whorls of the spire densely granose-decussate. 

 Whorls 8, slightly convex, the suture whitish and puckered. 

 Aperture white within, contained about one and two-thirds 

 times in the length of shell. Columella arcuate, white; the 

 parietal wall white calloused around the axis, transparent 

 above. 



Length 5 inches, diam. 2 inches, 9 or 10 lines (Brug.). 



South Africa : Districts George and Uitenhage, common un- 



