72 PARTULINA, MAUI. 



rower contour. The system of banding (i. e., positions of the 

 bands) is the same as in porcellana. 



386. P. porcellana wailuaensis (Sykes). PI. 19, figs. 12, 

 13, 14. 



Shell dextral, subperforate, glossy-turrited, rather solid, 

 very lightly striate, white painted with chestnut lines, marked 

 at the periphery with a white zone and in the suture a black- 

 ish-chestnut line. Whorls 5 to 5J^, regularly increasing, con- 

 vex. Aperture auriform; columellar margin having a mod- 

 erate brown fold, the right margin acute, parietal callus very 

 thin. Length 15.5, diam. 8.4 mm. (Sykes). 



East Maui : Wailua (Perkins). Hana (Cooper). 



Achatinella (Achatinellastrum) ivailuaensis SYKES, Fauna 

 Hawaiiensis, ii, Mollusca, p. 328, pi. 11, f. 19 (and var., f. 

 20) , 1900. Partulina cooperi BALDWIN, Nautilus, xix, p. 135, 

 April, 1906. 



" A very pretty little shell of the group of A. bella Reeve, 

 of Molokai. A variety also occurred (pi. 19, fig. 14) in which 

 the banding is almost obsolete save in the suture of the earliest 

 whorls and in one strong dark band below the periphery ' 

 (Sykes). Fig. 13 is copied from Mr. Sykes 's type figure. 



The arrangement of bands is essentially the same as in 

 porcellana, but the shell is somewhat wider in contour, and 

 the bands are typically paler and more diffuse. I have not 

 Been specimens from Wailua. 



Mr. Baldwin's P. cooperi from Hana (pi. 19, fig. 12, co- 

 type) seems to belong to the same race. The shell is pale 

 buff with a white peripheral belt bordered on both sides by 

 ochraceous bands; base and upper surface have some diffuse 

 paler ochrey lines or bands, and there is a darker line along 

 the suture. Embryonic shell white or whitish with a purple 

 spiral band above the suture and a yellow line below the 

 suture. The columella and its fold are purplish-brown, and 

 the narrow callus within the outer lip either white or purplish 

 brown. A half-dozen specimens of the type lot, sent by Mr. 

 Baldwin, show but slight variation. 



Length 17, diam. 9.5 mm. (Baldwin). 



Length 17.3, diam. 10 mm. 



