PARTULINA. 359 



A. virgulata halawaensis 'Baldwin' Borch. PL 26, figs. 2, 

 2a, Kepookoholua, coll. by Thaanum, seems to be rather a 

 ''good" subspecies by its slender form, pale color, with nar- 

 row bands or none. It is found only in the Halawa district. 

 In general, P. virgulata is darkest westward, lighter towards 

 the east, though there are individual exceptions. 



P. VIRGULATA KALUAAHACOLA n. V. PL 26, figS. 3, 



The shell is small, sinistral ; embryonic whorls white with 

 a blackish-chestnut band above the suture ; subsequent whorls 

 closely marked along growth-lines with hazel lines on a warm 

 buff ground, or with indistinct brownish streaks and some 

 hazel lines on a tawny olive ground ; indistinctly banded. 

 Length 19.5 to 20 mm. 



Kaluaaha, at about 1,700 ft., on ieie. D. Thaanum. 



This is a local race, related to the plain form of virgulata 

 figured on pi. 26, figs. 1, la. It occurs at the lower limit of 

 tree shells in this valley, and is extremely rare perhaps now 

 extinct. 



P. SUBPOLITA Hyatt & Pilsbry, n. sp. PL 23, fig. 1. 



Shell imperforate, sinistral, ovate-conic, rather solid. Em- 

 bryonic whorls white with a broad chocolate band above the 

 suture, having excessively faint spiral stride or none. Follow- 

 ing whorls light chrome ("pinard yellow"), uniform or hav- 

 ing one or several faint whitish lines at or below the middle. 

 Surface glossy, with distinct wrinkles of growth but only faint 

 traces of spiral striae. Last whorl somewhat compressed 

 peripherally. Aperture white, the outer lip expanded below, 

 a little thickened within; columella white, fold moderate. 

 Length 17, diam. 11, aperture 9 to 9.2 mm. 



Molokai : Ualapue, Thaanum. Cotypes 110. 106992 A. N. S. 

 P. and 1932 Cooke coll. 



[Partulina] subpolita P. & H., Manual xxii, p. 24, 1912. 



The color pattern of the embryo and the slightly expanded 

 lip allies this to P. virgulata, and it stands nearest to P. v. 

 kaluaahacola from a neighboring locality. This relationship, 

 pointed out to me by Dr. Cooke and Mr. Thaanum, became 



