LEPTACHATIN'A, GROUP B. H 



pie, acute. Length 7/30, diam. 3/35 inch." (5.8x2.1 mm ) 

 (Migh.) 



Oahu (Migh.) : Waianae Mts. at Palehua and back of 

 Leilehua (Cooke). 



Bulimus scutilus MIGH., Proc. Bost. Soc. N. H., ii, 1845, 

 p. 20. PFR., Mon. Hel. Viv. ii, p. I65.Leptachatina scutilus 

 PEASE, P. Z. S., 1869, p. 650. 



It is with some hesitation that I refer shells to this species. 

 Mighel's description is incomplete, and the types were prob- 

 ably lost in the fire which destroyed part of his collection as 

 no trace can be found of this species. The shells which I have 

 referred to this species are imperforate, elongately turrited, 

 corneous or slightly brownish corneous, thin, diaphanous, 

 smooth, glossy. Spire turrited, subcylindrical, apex obtuse. 

 Suture simple, slightly impressed. Whorls 7, nearly flat, the 

 last subcylindrical, slightly tapering at the base; aperture 

 elongately oval, slightly oblique, nearly perpendicular; colu- 

 mella nearly straight, slightly twisted, with a very minute 

 oblique fold; outer lip erect, thin, nearly straight above, be- 

 low arcuate ; columellar margin thin, reflexed, adnate. 



This species recalls L. convexiuscula Sykes. The shell is 

 slightly smaller, with less convex outlines, the whorls are 

 more evenly coiled and the last two increase more slowly, the 

 aperture is smaller and more perpendicular. My specimens 

 are slightly larger than Mighel's measurements and have an 

 additional whorl. The measurements of an average speci- 

 men are : Length 7.0, diam. 2.3, alt. of ap. 2.3 mm. 



10. L. L^VIGATA n. sp. PI. 6, figs. 4, 5. 



The shell is imperforate, elongately conic, slightly attenu- 

 ate, reddish brown above the periphery and yellowish cor- 

 neous below, subdiaphanous, glossy, smooth, under a lens in- 

 distinctly striate with lines of growth. Spire acutely conic, 

 apex obtuse. Suture lightly impressed, narrowly margined, 

 marked with a narrow dark brown band. Whorls 6^, 

 slightly convex, the last subcylindrical, tapering towards the 

 base. Aperture subovate, slightly oblique, perpendicular. 

 Columella nearly straight, with a very minute, deeply situ- 



