40 LEPTACHATINA, GROUP G. 



Suture slightly impressed, faintly and narrowly margined. 

 Whorls 7, the third and fourth nearly flat, the rest slightly 

 convex, the last elongate, tapering to the base. Aperture 

 subovate, slightly oblique, nearly perpendicular. Columella 

 nearly straight, with a rather strong oblique fold. Outer lip 

 regularly arcuate, thickened within, columellar margin thick- 

 ened, reflexed adnate. Length 9.0, diam. 3.8, length of ap. 

 3.5 mm. 



Hawaii: Mana, fossil (Henshaw). 



A rather variable species in size ; one measures, length 10.4, 

 diam. 4.8, length of ap. 4.3 mm. The aperture is small and 

 very broad in proportion to its length. 



51. L. LEPIDA n. sp. PI. 1, figs. 12, 13. 



The shell is imperf orate (rarely perforate), ovately coni- 

 cal, brownish corneous, thin, subdiaphanous, glossy, under 

 a lens minutely striate with lines of growth. Spire conic, 

 apex blunt. Suture simple, scarcely impressed. Whorls 6, 

 nearly flat, the last slightly rotundate, tapering to the base. 

 Aperture subovate, rather broad, oblique, very slightly dia- 

 gonal. Columella subtrimcate, with a rather strong, oblique 

 fold. Outer lip moderately arcuate, thickened within, white; 

 columellar margin thickened, reflexed, adnate. Length 6.5, 

 diam. 3.3, length of ap. 2.9 mm. 



Hawaii: Mana (Thaanum). 



From L. simplex this species differs in being smaller, with 

 the same number of whorls, thicker, the whorls are flatter and 

 the spire is shorter and more conic in outline. 



G. Group of L. nitida. 



52. L. PUMIDA (Gulick). PI. 3, fig. 58. 



"Shell dextral, imperf orate, ovate conic, thin, shining, pel- 

 lucid, corneous, with a dark line accompanying the suture, 

 microscopically very finely striated ; apex somewhat obtuse, 

 pallid; spire convexly conical; suture simple, scarcely im- 

 pressed ; whorls 7, rather flat ; columellar fold central, white, 

 lamellif orrn ; aperture pyrif orm ; peristome simple ; with dex- 



