D LEPTACHATINA, GROUP A. 



very oblique, slightly convex whorls, the last of which is 

 nearly two-thirds the length of the shell. Suture distinct, 

 and faintly margined and crenulated. Aperture very nar- 

 row, one-third the length of the shell, rounded at base, and 

 acute behind. Lip simple, whitish, thickened within, and 

 arching forward. Columella without a conspicuous fold 

 bordering the truncation. Length 1/9, diarn. !/ inch (12.5 

 x3.1 mm.)." (Gld.) 



Kauai (U. S. Expl. Exped.). 



Acliatinella acuminata GOULD, P. Bost. Soc., ii, 1848, p. 

 200 ; U. S. Expl. Exped., Moll., 1852, p. 87, pi. vii, figs. 100, 

 lOOa. Acliatinella (Leptachatina} acuminata PFEIFPER, Mon. 

 Hel. Viv., iv, 6, 566. Leptacliatina acuminata PEASE, P. Z. S. r 

 1869, p. 650. SYKES, Fauna Haw., ii, Moll., p. 357, pi. xii, 

 figs. 13, 13a (radula). 



This species, the type of the genus, unfortunately is repre- 

 sented by a single broken shell in the collection of the Smith- 

 sonian Institution. A careful search through Gould's col- 

 lection, in Albany, did not produce another specimen. 



The species seems to be entirely distinct from any other 

 species, and does not seem to have been rediscovered since 

 the original material was collected. Specimens belonging to 

 L. attenuata have been distributed by later collectors as this 

 species, but the two are separable. L. acuminata (according 

 to Gould's figure) is smoother, narrower in proportion to its 

 length, the spire is more shortly conic, the sutures more 

 oblique and the aperture is narrower and longer. L. cuneata 

 may be a possible relative. 



L. acuminata is probably a very local species and may 

 ultimately be found somewhere in the northeastern district of 

 Kauai, where very little collecting, if any, has been done. 

 Gould's figure is copied in fig. 41. 



2. L. CUNEATA n. sp. PI. 10, figs. 1, 2. 



The shell is imperforate, conic, corneous, thin, subdiaphan- 

 ous, glossy, indistinctly striate. Spire conic, apex somewhat 

 obtuse. Suture hardly impressed, very minutely crenulate. 

 Whorls 6%, the upper flat, gradually becoming slightly con- 



