8 LEPTACHATINA, GROUP B. 



scarcely rnarginate at the suture; aperture almost vertical, 

 elongately ovate; columella arcuate; columellar fold com- 

 pressed, twisted, almost transverse; lip scarcely thickened, 

 brown. Length 9.0, diam. 4.0 mm." (Pse.) 



Kauai (Pease) : Haleieie, at 1500 and 1700 ft. (Cooke). 



Leptachatina Icsvis PEASE, P. Z. S., 1869. p. 651 (noni. 

 sol.) ; Journ. de Conchyl. xviii, 1870, p. 91. CROSSE, Journ. 

 de Conchyl. xxiii, 1876, pi. iv, fig. 6. Acliatinella (Lep- 

 tachatina} Itrvis PFR., Mon. Hel. Viv., viii, p. 245. 



Typical examples, from the higher elevation, are very 

 slightly larger than Pease's type. A fine example measures: 

 length 9.6, diam. 4.2, length of aperture 4.3 mm. Those 

 from the lower elevation are smaller, thinner, lighter-colored 

 and more cylindrical in outline. They measure length 7.6, 

 diam. 3.5, length of aperture 3.5 mm. This species is very 

 distinct from any other Kauaian species. The dark color, 

 smooth and very glossy surface being most characteristic. 

 This species is not closely related to L. fusca Newc., as Pease 

 supposed. The original figure is copied in fig. 56. 



B. Group of L. sandwicensis. 

 5. L. KNUDSENI n. sp. PL 9, figs. 11, 12. 



The shell is imperforate, elongate, turrited, corneous, thin, 

 diaphanous, glossy, smooth, under a lens minutely and irre- 

 gularly striate with lines of growth. Spire turrited, apex 

 blunt. Suture lightly impressed, very finely margined. 

 Whorls 8, very slightly convex, compact, the last subrecti- 

 linear in outline, somewhat tapering at the base. Aperture 

 ovate-pyriform, nearly perpendicular, very slightly oblique. 

 Columella slightly arcuate above, not truncate, with a very 

 minute fold deep within. Outer margin of lip erect, slightly 

 thickened within, slightly arcuate; columellar margin white, 

 slightly thickened, appressed. Length 6.3, diam. 2.2, length 

 of aperture 2.0 mm. 



Kauai : Waipo, near Halemanu, at an altitude of 3500 ft., 

 Ekaula, alt. 1900 ft. (Cooke). 



This species' nearest relative is L. lucida Pse., from the 



