NO. I ACHATINELLA APEXFULVA DIXON WELCH 175 



A narrow shell (pi. 12, fig. 25) measures: Length 19.5 mm., 

 greater diameter 11.6 mm., spire height 11.5 mm.; embryonic whorls 

 white; first two postembryonic whorls a dilute tint of tilleul bufif, 

 last whorl a very dilute tint of seashell pink spirally banded and 

 lined above and below the wide peripheral band with seashell pink. 



ACHATINELLA APEXFULVA KAHUKUENSIS Pilsbry and Cooke 



Plate 3, Figure 34; Plate ii, Figures 32-33(1 

 AcJtatincIIa valida kahiiknensis Pilsbry and Cooke, Man. Conch., vol. 22, p. 338, 

 pi. 52, figs. i7-i7a, 1914- 



To quote from Pilsbry and Cooke : 



The shell is dextral, white above, yellow below the periphery, usually 

 encircled with a black-brown line at the junction of the two ground-tints, and 

 often there are several additional lines widely spaced on the base or sometimes 

 above. A faint sutural line may usually be discerned. Embryonic whorls when 

 unworn are cartridge buflf, slightly darker near the sutures, but not at the tip. 

 The outlines of the spire are perceptibly concave, the last whorl swollen. Lip 

 moderately thickened, white ; columella very faintly rose-purple. 



Length 20, diam. 13 mm. ; 6i whorls. 



Length 18.7, diam. 12.2 mm. ; 6^ whorls. 



Oahu: Kahuku, at an elevation of 1,500 to 1,750 ft. (L. A. Thurston). Co- 

 types in collection A. N. S. and Bishop Mus., from Mr. Thurston's Collection. 



Distribution, area 115?: Malaekahana-Laie Ridge, Thurston 

 BBM 130973. From Thurston's description of the locality, the ridge 

 is undoubtedly the Malaekahana-Kaluakauila Ridge. The exact 

 location is not known but tentatively may be placed in area 115?. 

 (fig. 6a, p. 185). Also collected by Wilder, BBM 50608, J. S. Emer- 

 son, BBM 102339. 



The shell of Pilsbry 's plate 52, figure 17, is here reproduced on 

 plate II, figure 32, and is considered the lectotype because it has the 

 usual color pattern of the shell. The color pattern of the lectotype 

 is similar to that of plate 3, figure 34, which is an obese form of the 

 shell, and has the first two and a half embryonic whorls worn and 

 cream color, last embryonic whorl white ; postembryonic whorls above 

 the periphery white, last whorl, below the peripheral band of burnt 

 umber, honey yellow with two central lines of cinnamon; outer 

 margin of the lip avellaneous, inner margin white, columella callus 

 light vinaceous fawn. Length 19.4 mm., greater diameter 13.5 mm., 

 spire height 10.5 mm. 



A lighter color pattern (pi. 11, fig. 33) has the embryonic whorls 

 light buff; postembryonic whorls white, shaded or faintly banded 

 with pale mouse gray, on the penultimate whorl a band of cinnamon 

 on the upper third of the whorl fading out on the last whorl, last 



