22 PARTULISA, SECTION PERDICELLA. 



be readily separated from it by its greater size, by being much 

 broader in proportion to the length, and by the color-pattern 

 being finer in design and more zigzag" (Sykes). 



The embryonic shell is like that of P. zebrina, and the 

 sequence of patterns exactly similar. An almost fully formed 

 embryo is 4.2 mm. long, imperforate, with a straight, very 

 slightly calloused columella, 2J whorls. 



The columella resembles that of P. zebrina, and is much 

 more strongly twisted than in the East Mauian P. mauiensis. 

 The color-design is variable, but a majority of the shells before 

 us are similar to fig. 7, Mr. Sykes's original figure is copied, 

 fig. 4. 



Length 15, diam. 8, aperture 7.6 mm.; 5^ whorls. 



Length 13, diam. 7.8, aperture 6.7 mm.; (not quite mature). 



7. P. KUHNSI Pilsbry, n. sp. PL 14, figs. 8, 12-15. 



The shell is dextral, perforate, conic, thin; outlines of spire 

 straight; whorls moderately convex. Embryonic whorls white 

 or brownish, uniform or more frequently having festooned axial 

 stripes or two bands of lunate spots on the la?t half-whorl. 

 Subsequent whorls maculate with brown; the last whorl streaked 

 and maculate with brown, and encircled with white bands, of 

 which one on the upper surface, another below the periphery 

 and an umbilical area are the most constant. Other specimens 

 have the last embryonic whorl broadly striped with brown, last 

 whorl copiously zigzag-striped with chestnut on a white ground; 

 this pattern is sometimes interrupted by one or two white spiral 

 bands. Surface glossy, densely and minutely striate spirally, 

 the striation weak on the last whorl, Growth-striae weak. 

 Aperture white within; peristome thin, unexpanded; columella 

 white, or having a brown or purplish stain in the lower part, 

 nearly straight, but in oblique view a low fold is visible within; 

 sometimes the fold is obvious in a front view; outer edge tri- 

 angularly reflected. 



Length 13.2, diam. 8 mm.; whorls 5. 



Length 12, diam. 7.2 mm. 



West Maui: Honokohua, type loc. ; Honokowai; Mt. Lihau; 

 Mt. Helu; Mauna Hoomaha; ridges above Lahaina; Hailaau; 



