78 PARTULINA, MOLOKAI. 



hana (Cooke and Pilsbry) ; Kalae, Puunea, Iloli, Waileia, 

 Maunahui and Kaamola (Borcherding, coll. Meyer). 



Achatinella mighelsiana PFR., P. Z. S., 1847, p. 231; Mon- 

 ogr. ii, 238, 1848. REEVE, Conch. Icon., vi, pi. 5, f. 40, April, 

 1850. NEWCOMB, Ann. Lye. N. H., vi, 319 (animal). < 

 SYKES, Fauna Hawaiiensis, p. 314. BALDWIN, Catalogue, p. 

 6. GWATKIN, Proc. A. N. S. Phila., 1895, p. 238 (radula). - 

 THWING, Orig. Descript, p. 97. Achatinellastrum mighelsi- 

 ana Pfr., BORCHERDING, Zoologica, xix, p. 79, pi. 7, f. 1-13, 

 15, 17, 19 ; with var. martensi, p. 80, pi. 7, f . 14, 16, 18, 20. 



The shell is dextral, perforate, very smooth and glossy, por- 

 celain-like, showing weak spiral strias under a lens. The 

 typical form is white with narrow gray streaks and a black- 

 brown belt just below the periphery, and a narrow blackish 

 submargin in the lip. The embryonic whorls are white (fig. 

 13). This pattern varies to forms having the ground white 

 without streaks, or buff, with or without yellow streaks. The 

 subperipheral belt may be split, or rarely another band de- 

 fines an umbilical area. Probably Kalae is the type locality. 



(6) White, without bands or streaks (fig. 15) Kalae. 



(c) White, with or without gray streaks, and variously 

 (banded and lineate (figs. 10-12). This is var. martensi of 

 Borcherding. 



(d) Pale yellow, with several bands, embryonic shell brown 

 with a white band above. 



(e) White, with yellowish-brown streaks interrupted by 

 spiral white bands (fig. 16). 



(/) Similar to the type, but the base is yellow (fig. 17) 

 Kalae. 



Well-grown specimens measure length 19, diam. 10 mm. 



Borcherding describes a var. martensi as differing from the 

 type by: white color, well-impressed suture, the whorls more 

 convex, encircled by lines either wide or narrow, the last 

 whorl having the typical broad brown peripheral band, colu- 

 mella light reddish, the lip never bordered within with brown, 

 interior fleshy-white. PL 18, figs. 10-12 represent this color- 

 form. It is from Kawela, The rounded whorls and deep 

 suture are equally well marked in some specimens of other 



