44 LEPTACHATINA, GROUP G. 



mellar margin reflexed, adnate. Length 9.9, diam. 5.2, length 

 of ap. 4.0 mm. 



West Maui: Lahaina (Baldwin). 



This species is related to L. nitida Newc. It differs, how- 

 ever, in its longer, more slender and less ovate spire ; the upper 

 whorls are more attenuate ; the apex more acute ; and the 

 aperture is more diagonal, shorter and broader in proportion 

 to its length. 



56. L. COMPACTA (Pease). PI. 2, fig. 25. 



"Shell dextral, somewhat solid, imperf orate, subconic or 

 acutely ovate, scarcely striate, brownish corneous ; spire short, 

 subobtuse ; whorls 5, slightly convex, the last equal to one-half 

 of the length ; aperture elliptical, angulate, at both ends ; 

 columellar fold small, callous, oblique, white; lip thickened, 

 with margins united with a callus, columella adnate. Length 

 8.0, diam. 4.0 mm." (Pse.) 



Maui (Pease) : East Maui, Makawao (Baldwin) ; Halea- 

 kala, at 5000 feet (Perkins). 



Labiella compacta PEASE, Journ. de Conchyl., xvii, 1869, p. 

 172. Labiella compacta PFR., Mon. Hel. Viv., viii, p. 219. 

 Leptackatina compacta PSE., Proc. Zool. Soc. London, 1869, 

 651. SYKES, Fauna Haw., ii, 1900, p. 359. 



A shell before me, -which I have referred to this species 

 (pi. 2, fig. 25) has the following measurements; length 8.2, 

 diam. 4.3, length of ap. 4.0 mm. It is slightly larger than 

 the measurements given by Pease and has iy 2 more whorls. 

 The species, if my determination is correct, is about midway 

 between L. nitida Newc., and L. lento,. 



Unfortunately the type of the species is unfigured and I 

 have been unable to find a single authentic specimen. 



57. L. ISTHMICA Ancey. PI. 2, fig. below fig. 30; pi. 12, figs. 

 9, 10. 



"Shell subfossil (if not altogether extinct), quite thick for 

 the genus, subopaque, shining, white, the last whorl generally 

 pale red below the suture, lip white : oblong conoidal, smooth, 

 under a strong lens furnished with minute lines of growth 



