LEPTACHATINA, GROUP P. :57 



the length is but "little greater than its breadth." The type 

 specimen in the National Museum, Washington, and his fig- 

 ures, show that "i/g" is probably a misprint for 1/3. His 

 figure, natural size, is 8.0 mm. long and 4.3 broad. 



I cannot follow Newcomb in considering L. gummea Gul., 

 identical with this species. A specimen of guttula carefully 

 compared with the type (and agreeing closely) has more or 

 less the characters of a Kauaian shell. There is an acute 

 thick callus along the face of the columella. The lip is 

 strongly thickened and there is quite a thick callus on the 

 parietal wall. This specimen measures : Length 7.5, diam. 4.1, 

 length of ap. 3.7 mm. This is quite close to the corrected 

 Gould's measurements 8.3x4.7 mm. 



Gould's figure of the type of L. guttula is copied, pi. 2, 

 fig. 34. 



46. L. SUBOVATA n. sp. PI. 11, fig. 2. 



The shell is imperforate, elongately ovate, brownish, thin 

 diaphanous, glossy, under a lens minutely striate with lines of 

 growth. 'Spire narrowly conic, with slightly convex outlines, 

 apex somewhat obtuse. Suture scarcely impressed, margined 

 with a rather indistinct narrow line. Whorls 6, increasing 

 rather rapidly, very slightly convex, the last elongate, cylin- 

 drical, tapering gradually to the base. Aperture subovate, 

 very slightly oblique and slightly diagonal. Columella 

 slightly twisted, brownish corneous, with a very thin acute 

 callus along its face; columellar fold basal, rather strong, 

 oblique. Outer lip regularly curved, thickened within, white; 

 columellar margin appressed, adnate. Length 7.3, diam. 3.4, 

 length of ap. 3.3 mm. 



Lanai (Thaanum). 



A rather abundant species approaching L. ovata from West 

 Maui. The latter is, however, slightly lighter colored and 

 thinner, more pellucid, glossier and broader in proportion to 

 its length. In L. subovata the penultimate whorl is slightly 

 more convex. A few specimens have a narrow dark brown 

 band at the suture. 



