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. 



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

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

 longitudinally striate, apex somewhat obtuse; whorls Q l / 2 , 

 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 1 /o 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 conically 

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



