COCHLITOM.A. 99 



upper whorls and are only traceable for a short distance be- 

 low the suture on the body whorl. The extreme upper edge 

 of the whorl bordering the suture is pale and crenulated; 

 aperture irregularly ovate, acuminated above and produced 

 only moderately below the truncature of the columella, equal- 

 ling about half the entire length of the shell, somewhat 

 iridescent, within bluish or vinous white ; peristome thin, sim- 

 ple, everywhere arcuate; columella well arched in the middle 

 and tortuous beneath, oblique but narrowly truncate at the 

 base, covered with a whitish enamel faintly tinged with pink, 

 which extends in the form of a very thin layer over the whorl 

 to the termination of the outer lip." (Smith). 



Length 50, diam. 26, aperture 25 x 16 mm. 



Length 39, diam. 22, aperture 21 x 12 mm. 



South Africa: Port Natal (Dr. P. Sutherland). Trans- 

 vaal, between Delagoa Bay and Lydenburg (Dr. Wilms). 



A. simplex SMITH, Quart. Journ. of Conch, i, p. 350 (May, 

 1878). v. MARTENS, Sitzungsber. naturforsch. Freunde, 1900, 

 p. 119. 



"This species is very distinct from any other with which 

 I am acquainted. It is remarkable for the simplicity of its 

 coloring, the rotundity of its whorls and its glossy surface" 

 (Smith). 



27. C. TRANSVAALENSIS (E. A. Smith). 



"Shell oblong, thin, pale greenish-straw color; spire bluntly 

 conical, terminated by an obtuse apex; whorls 7 1 /^ very con- 

 vex, separated by a deep and almost horizontal suture, crenu- 

 lated just beneath it and bordered by a very thin, yellow- 

 ish line; the surface is everywhere (with the exception of 

 the lower half of the body whorl which is smooth) covered 

 with oblong granules, which are not very observable to the 

 naked eye; the lines of growth are distinct and a little obli- 

 quely inclined; the aperture is small, being less in length 

 than half that of the entire shell and of a diaphanous whitish 

 color within; columella very much arched in the middle, 

 tortuous beneath, abruptly truncated at the base, and the 

 edge coated with a thin, white enamel." (Smith). 



