LEPTACHATINA, GROUP F. 31 



is much, narrower in proportion to its length with more convex 

 outlines and slightly more distinctly striate. As far as I 

 know, this species has only been collected once and that in the 

 locality mentioned above when 5 closely agreeing specimens 

 were taken. 



38. L. EMERITA Sykes. PI. 6, figs. 1, 2, 3. 



1 1 The shell is elongate, subcylindrical, imperf orate, dextral, 

 corneous, or hyaline or yellow, somewhat thin, under a lens 

 longitudinally striate, apex somewhat obtuse; whorls 6%, 

 flatly convex, the last almost equal to % the length of the 

 shell; suture impressed, marginate; aperture ovate, with, the 

 dextral margin slightly thickened, columellar margin subre- 

 flexed, furnished with a small inconspicuous ascending lamella. 

 Length 8.0, diam. 3.5 mm." (Sykes.) 



Molokai: Kalamaula, and at 4000 ft. (Perkins); Kauna- 

 kakai, under stones (McGregor) ; Kamoku Hill, Ulapue, 

 Halawa (Thaanum) ; near Waikolu (Cooke). 



Leptachatina, emerita SYKES, Fauna Hawaiiensis, ii, 1900, 

 p. 361, pi. xi, fig. 10. 



"Variable in color, shading from brown to a hyaline tint; 

 adult specimens lose their gloss and become of a straw-yellow. 

 The columellar plait is small and inconspicuous." (Sykes.) 



The penultimate whorl is often tumid. Large specimens 

 of this species, with 7 whorls, have the following measure- 

 ments : length 8.5, diam. 3.6, length of ap. 3.6 mm. There is 

 a smaller variety of this species, having the same color varia- 

 tions. A specimen with 6^2 whorls measured length 6.9, diam, 

 3.1, length of ap. 3.0 mm. Fig. 3 is a copy of Mr. Sykes' ori- 

 ginal figure. 



39. L. CONCOLOR n. sp. PI. 6, figs. 9, 10. 



The shell is imperforate, elongately ovate, yellowish corn- 

 eous or straw-color, dull, rather thin, hardly diaphanous, 

 under a lens the first two whorls are smooth, the third and 

 fourth very closely striate, the last three a little more coarsely 

 striate, especially at the sutures. Spire acutely conieally 

 ovate, apex obtuse. Suture simple, hardly impressed, crenu- 



