PARTULINA, MOLOKAI. 81 



of the upper whorls marked with umber, suture with a broad 

 black band, and a narrow line of the same color -continued 

 around the body-whorl. Whorls 5, convex; suture well de- 

 fined, margined. Aperture oblong-ovate, dark purple ; colu- 

 mella with a large tubercle tipped with purple ; lip simple. 

 Length .55, breadth .45 inch (Neiuc.). 



Animal of a uniform yellowish- white, including tentacles; 

 tentacular sheath slightly tinged with brown; mantle black 

 (Neiucomb) . 



Molokai (Newcomb), Kaluaaha to Halawa (Baldwin; 

 Bishop Museum), Kawela, Kaamola and Ualapue (Borcher- 

 ding). 



Achatinella polita NEWC., Annals of the Lyceum of Nat. 

 Hist, of N. Y., vi, p. 24, May, 1853; t. c. p. 328 (description 

 of animal) ; P. Z. S., 1853, p. 142, pi. 23, f. 37. PFR., Mon- 

 ogr., iv, 536. BALDWIN, Catalogue, p. 81. THWING, Reprints 

 Orig. Descript. Achat., pi. 2, f. 9. Achatinellastrum polita 

 Nc., BORCHERDING, Zoologica, xix, p. 81, pi. 8, f. 8, 9. 



The typical polita has the upper 3 whorls bicolored, dark 

 yellow, chestnut or olive with a white band below the suture ; 

 following whorls paler, Naples yellow to wax yellow or olive 

 ocher, with a chocolate band below the suture. This is the 

 form figured by Newcomb as typical. One of his specimens is 

 drawn in pi. 24, fig. 2. In his description he mentions a line 

 of the same color (black) upon the body- whorl. Figs. 3, 4 

 represent specimens from Newcomb so marked. The aper- 

 ture is purplish within, varying in shade. Length 13.7, diam. 

 9 mm., 5 l / 2 whorls, to length 15, diam. 9.2 mm. 



Ne\vcomb 's type locality was doubtless Kaluaaha or the ad- 

 joining valley east, Mapulehu, where specimens exactly like 

 the types are found. It is likely that Newcomb stayed with 

 Mr. Hitchcock, a missionary who lived at Kaluaaha, and had 

 a place at Kalae. Mapulehu shells are further illustrated in 

 pi. 24, figs. 5, 6, collected by Mr. Thaanum. 



Another form is larger, up to length 18, diam. 10 mm., with 

 the embryonic 3 whorls white with a minute dusky tip, fol- 

 lowing whorls yellow (often paler on the last whorl), suture 

 edged below with a dark line or none. The aperture is of a 

 purplish tint, darker or dark-streaked near the lip. 



