COCHLITOMA. 89 



Jonjj as half the entire length of the shell, of an irregular, 

 elongate, oval form, acute superiorly, very white within, be- 

 ing covered with a thick, shelly deposit of that hue. The 

 columella is only slightly arched, also clothed with a white 

 callosity extending upwards over the whorl as far as the ex- 

 tremity of the outer lip. The truncation is rather abrupt and 

 narrow." (Smith). 



Length 84, diam. 37, aperture 43 x 22 mm. 



Habitat unknown. 



A. albopicta SMITH, Quart. Journ of Conch, i, p. 346. 

 ANCEY, Journ. de Conchyl. 1902, p. 278, fig. 7. 



"The nearest ally of this species appears to be A. kraussi 

 Rve. It differs from it, however, in having a more elongate 

 and acuminate spire, the more varied and irregular charac- 

 ter of the blotching and the strongly marked granular sculp- 

 ture" (Smith). 



Ancey, who examined the type in B. M., states that the in- 

 dividual described is denuded of cuticle, so that the name 

 given by Mr. Smith is not applicable to fresh specimens, in 

 which the ground-color is not white but quite a dull yellow. 

 The species is readily recognizable by the convexity of its 

 whorls especially near the suture. Fig. 43, after Ancey, rep- 

 resents the typical form, in addition to which he possesses 

 a second one, constituting a "var. subunicolor, in which the 

 shell is almost wholly yellow, with some few figures or macu- 

 lations especially on the upper whorls." 



13. C. USTULATA (Lamarck). PL 28, fig. 38; pi. 29, fig. 45. 



Shell oblong, narrow, thin; yellow, nearly covered with 

 broad, zigzag or interrupted black-chestnut markings, nar- 

 rower below the suture, where short stripes are interposed; 

 the upper whorls dull flesh colored. Surface of the spire 

 very finely decussate-granulate, the last whorl glossy and 

 smooth except for puckering below the suture. Spire long, 

 regularly tapering to an obtuse summit; suture margined. 

 Whorls about 7%, slightly convex. Aperture small, ovate, 

 white and lead-bluish within; lip thin, the columella quite 

 concave above, truncate, with a thin and narrow, reflexed 

 brownish callous. Parietal callous thin, transparent. 



