LEPTACHATINA, GROUP M. 61 



77. L. SACCULA Hartman. PI. 4, fig. 79. 



"Shell dextral, ovate conic, thin and semi-pellucid, spire 

 more than half the length. "Whorls 6, slightly convex, the 

 last inflated, suture well impressed, surface coarsely striate. 

 Aperture roundly ovate, subumbilicate, columella white, with 

 an oblong plica within ; interior of labium white and 

 slightly thickened ; color pale green. Length 10, diam. 6 mm., 

 length of aperture 4, diam. 2.5 mm." (Hartm.) 



Hawaiian Islands (Hartman). 



Leptachatina saccula HARTMAN, Proc. Acad. N. S. Phila., 

 1888, p. 55, pi. 1, fig. 15. 



I have been unable to refer any shell to this species and 

 have seen no authentic specimen. From the description the 

 shell may possibly belong to the group of L. succincta Newc. 

 Hartman 's figure is copied. 



M. Group of L. fossilis. 



78. L. FOSSILIS n. sp. PI. 8, figs. 58, 59. 



The shell is umbilicate, conically ovate, white (in a fossil 

 state), somewhat solid, glossy, nearly smooth, under a lens 

 minutely striate with lines of growth. Spire ovately conic, 

 apex subacute. Suture slightly impressed, simple. Whorls 

 7, almost flat, the last rotundate, slightly tapering towards 

 the base. Aperture small, acutely angled at both ends, per- 

 pendicular, oblique, having, on the parietal wall, a A^ery thick, 

 acute callus, which is joined to the columella but separated 

 from the outer lip by a narrow sinus. Columella straight, 

 simple, with a rather small, almost transverse, deeply situated 

 lamella. Outer lip regularly curved, thickened within. 

 Umbilicus very large for the genus, circular. Length 7.7, 

 diam. 4.0, length of aperture 3.1 mm. 



Kauai (Newcomb). 



This species is represented by a single specimen in the 

 collection of Academy of Natural Sciences (no. 57820). It 

 was mixed with some specimens labeled L. extincta Pfr., sent 

 by Dr. Newcomb. L. fossilis differs from all the other species 

 of this genus in its relatively small aperture, its heavy parietal 



