NO. I ACHATINELLA Al'EXFULVA DIXON WELCH 55 



ACHATINELLA APEXFULVA LAURANI, new subspecies 



Plate i, Figures yj, 38; Platk 5, Figures 28-31; Plate 6, Figure i 



The embryonic whorls of the holotype (pi. i, fig. 38) are white; 

 first postembryonic and penultimate whorls, avellaneous, finely axially 

 streaked with faint lines of bone brown, last whorl avellaneous axially 

 streaked with olive brown and natal brown, spirally lined below the 

 periphery with olive brown and cream buff, and banded with buffy 

 brown, last eighth whorl bone brown ; impressed sutural band natal 

 brown ; outer margin of the lip natal brown, inner margin fawn 

 color. Length 18.2 mm., greater diameter 12.4 mm., spire height 

 9.7 mm., number of whorls 6g. 



Distribution, area 27: Hanaiki-Waimalu Ridge, type locality 

 191*, elevation 1,200-1,250 feet, 1932; also 192, elevation 1,200-1,250 

 feet, Meinecke, 7 sinistral 1933 (figs. 4, 4a, p. 53). Also collected by 

 Thurston, BBM 130604, 9 sinistral, Thwing, BBM 28751-28759, 26 

 sinistral. 



At a lower elevation on the same ridge, possibly in the region of 

 area 27A?, Thurston, 1910, BBM 130603, discovered a colony of 

 dextral forms living on maile (Alyxia), and lehua (Metrosidros). 

 Also collected by Cooke, BBM 72557-72558, 7 dextral, A. F. Judd, 

 BBM 110492-110494 and 1 10496, Thwing, BBM 28986, i dextral. 



The lightest color pattern (pi. 5, fig. 31), on 8 percent of the 

 shells in the combined Meinecke-Thurston lots from area 27, has 

 the postembryonic whorls white; impressed sutural and subsutural 

 bands wood brown shading to bone brown on the last two whorls; 

 last whorl banded and lined below and at the edge of the periphery 

 with bister and snuff brown, about the umbilicus a band of bone 

 brown; lip and columella callus natal brown. 



The obese form of the shell (pi. 6, fig. i) has a lined pattern 

 which occurs on 13 percent of the shells; the first postembryonic 

 whorl fawn color banded with white, penultimate army brown axially 

 streaked with olive brown, and lined with white, last whorl above 

 the periphery banded with a band of olive brown, and one of white, 

 below the periphery a band about 5 mm. wide of cinnamon buff 

 lined and banded with olive brown, base banded with pale pinkish 

 buff, and a band of bister in the umbilical region. Length 18.8 mm., 

 greater diameter 13.2 mm., spire height 9.5 mm. 



A dextral shell of the usual form and color pattern from area 

 27A? (pi. I, fig. 37) measures: Length 19.0 mm., greater diameter 

 12.4 mm., spire height 9.9 mm., number of whorls 6|. The first 

 postembryonic whorl and a half shades from fawn color to army 



