PARTULINA, LANAI. 83 



are normally colored. Fig. 16 from Kawela shows the lighter, 

 coloration, in which there are usually two yellowish bands, 

 one at the periphery, the other 'below the suture " (Borcher- 

 ding). 



Merely the culmination of the dark phase of polita. Simi- 

 lar shells have been taken by Doctor Cooke on Mapulehu 

 ridge. 



Color-form hepatica Borcherding. PL 23, figs. 17, 18. 



Shell dextral, long ovate, rather strong, glossy, with lon- 

 gitudinal and spiral lines, visible under the lens only, very 

 fine and not decussating. Surface yellow-greenish, liver- 

 brown, veined with darker streaks. Spire turrited; suture 

 distinctly margined, impressed. Whorls 5^, convex, the last 

 a little wider than spire, rounded. Columella weaklyf 

 twisted ; columellar fold white. Aperture oblique, half-ovate, 

 whitish within; perlstome simple, unexpanded. Length 17, 

 diam. 9 mm. (Borch.). 



Molokai: Kawela (fig. 17), Waileia (fig. 18). 



Achatinellastrum hepaticum BORCHERDING, Zoologica, xix, 

 p. 83, pi. 8, f. 15, 16. 



The largest in Dr. Cooke 's collection measures length 17, 

 diam. 11 mm. Others taken by Father Dutton are smaller. 

 The interior is white or pale purple. 



Series of P. variabilis. LANAI. 



44. P. VARIABILIS (Newcomb). PI. 21, fig. 14; pi. 22, figs. 1 

 to 12. 



" Shell sinistral or dextral, conically acuminate, polished, 

 shining; whorls 6, rounded, lightly margined above. Aper- 

 ture roundly ovate; columella short, armed with a strong 

 tubercle of a roseate color; lip expanded, acute. Color of 

 shell white, yellow, black and other shades, plain or with 

 from one to six bands of various colors on the last whorl. 

 Length 8, width 14-twentieths inch " (Newc.). 



Lanai (Newcomb, Thaanum and others) ; Windward side, 

 on ridges facing Maui, above Waiapaa, behind Koele, and 

 Lanaihale (Perkins). 



Achatinella veriabilis NEWC., P. Z. S., 1853, p. 154, pi. 24, 



