90 COCHLITOMA. 



"Length 2 inches 10 lines" (Lam.). 



Length 83.5, diam. 33, aperture 37 mm. 



S. Africa: George district, Cape Colony (Krauss) ; Pon do- 

 land (Beyrich). 



Achatina ustulata LAM., An. s. Vert, vi, pt. 2, p. 130 (1822). 

 REEVE, Conch. Syst. ii, pi. 177, f. 5; Conch. Icon, v, pi. 12, 

 f. 40. DESK, in Fer., Hist. p. 164, pi. 125, f. 1, 2. PER., 

 Monogr. ii, 257. KRAUSS, Die Siidafric. Moll. p. 81. MAR- 

 TENS, Sitzungsber. Ges. nat. Freunde 1890, p. 88. 



A much elongated member of the C. kraussi group. It is 

 rare according to Krauss, in the old forests. Reeve has 

 figured a shell very much narrower than the typical form, 

 see pi. 29, fig. 45. A more strongly granulose form than 

 usual has been reported by von Martens from Pondoland. 



14. C. ZEBRULA (v. Martens). 



Shell ovate, rather thick, very lightly striatulate; whitish 

 with rather wide brown streaks, somewhat wavy and con- 

 fluent with one another. Spire rather short, the apex ob- 

 tuse, rather wide, white. Whorls 6%, a little convex, the 

 suture crenulate, with scarcely any impressed line. Colu- 

 mella rather oblique, lightly arcuate, rather thick, distinctly 

 truncate. Aperture oval, whitish inside, showing the streaks 

 through ; the outer margin slightly arcuate ; basal lip arcuate. 

 Length 57-72, diam. 35-41.5, aperture 33.5-41x21-26 mm. 

 Apical angle 41 degrees. (Martens). 



S. Africa: Transvaal, on the road from Delagoa Bay to 

 Lydenburg. (Dr. Wilms, 1886). 



A. zebrula v. MTS., Sitzungsberichte Gesell. naturforsch. 

 Freunde zu Berlin, March 20, 1900, p. 118. 



Very near A. zebra Chemnitz, and especially the var. 

 tigrina Fer. (Histoire, p. 133), in markings agreeing better 

 with var. ~borniana, in shape more with typical zebra Ch., but 

 the whorls widening more rapidly than in either, and as it 

 seems, remaining always smaller, for of 9 examples given by 

 Dr. Wilms to the Berlin Museum, none exceeded 72 mm. long, 

 and the smaller ones, 57 mm., give the impression of being 

 full-grown shells, by the strong, not thin outer lip. A. craw- 



