COCHLITOMA. 89 



long 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 ^4. 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). PI. 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. 

 AVhorls about 7 1 / 4, 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. 



