80 LEPTACHATINA, S.-G. PAUAHIA. 



other species belonging to this section, and, in the type speci- 

 men, the denticle on the outer lip is lacking. Unlike any- 

 thing from Maui, except possibly L. compacta, Pse., from 

 which it differs in its more elongate spire and narrower and 

 more perpendicular aperture. 



A single shell, in Mr. Baldwin's collection, undoubtedly 

 belongs to this species. It is larger than the type specimen, 

 measuring 11.7 x 5.3 mm., and is of a yellowish straw color. 

 The denticle on the outer lip is faintly indicated, though 

 not as pronounced as in specimens of L. labiata. 



Subgenus PAUAHIA n. subgenus. 



The shells are imperforate or minutely perforate, cylin- 

 drical, striate, rather thin ; the embryonic whorls are smooth, 

 rounded; the whorls are closely coiled and increase very 

 slowly and regularly; the columellar fold is rather weak at 

 the aperture but becomes stronger within the shell. In young 

 shells there is a rather strong palatal lamina beginning un- 

 derneath the junction of the lip and extending under the 

 periphery nearly to the margin of the aperture. Type L. 

 artata,. 



This subgenus is proposed for three species : artata, tantilla 

 and chrysallis, all from Oahu. In the first two the rather 

 strong palatal lamina is clearly seen in young specimens, and 

 in the case of artata is faintly indicated in adult specimens. 

 Unfortunately I have not seen any young specimens of 

 chrysallis, so for the present it is not known whether this 

 species has this character. There is no doubt that chrysallis 

 belongs to this subgenus as it agrees closely in its other sub- 

 generic characters. 



Pauahia is dedicated to Bernice Pauahi Bishop, in whose 

 memory the museum at Honolulu which bears her name was 

 founded. 



104. L. ARTATA n. sp. PL 13, figs. 1, 2, 3, 4. 



The shell is imperforate, subcylindrical to subovate, nearly 

 corneous, thin, subdiaphanous, glossy, under a lens minutely 

 and regularly striate with lines of growth. Spire subcylin- 



