NO. I ACHATINELLA APEXFULVA DIXON — WELCH 145 



ACHATINELLA APEXFULVA STEELI van i 

 Plate 2, Figure 24; Plate 10, Figures 1-2 



Area 79: North-South Kaukonahua Ridge, locality 270, eleva- 

 tion 1,450 feet, 3 dextral, dead specimens. Steel and Welch, BBM 

 129012, 1934; "Mauka [toward the mountains] of the Burnt District, 

 Kaukonahua," Thurston, BBM 130674. The burnt district is in the 

 region of area 78?, on the North-South Kaukonahua Ridge. Also 

 collected by Wilder, BBM 10446, Lemke, BBM 1 15036, Gulick, BBM 

 10445 (figs. 5, 5a, p. 105). 



This variety may be a distinct subspecies separable from A. a. steeli 

 by having a distinctly lighter color pattern. The Welch lot of three 

 shells indicates this possibility, but in all other lots the variety is 

 found mixed with A. a. steeli. Therefore, until more careful collecting 

 is done in area 79 and this race is definitely proved to be a distinct 

 race and not a light color pattern of the shells of area 80, this form 

 is considered a variety of A. a. steeli. 



The usual form and color pattern of the shell (pi. 2, fig. 24) has 

 the embryonic whorls pale pinkish buff; the upper half of the first 

 two postembryonic whorls including the impressed sutural band cameo 

 brown, lower half white, banded just above the edge of the periphery 

 with a band of vinaceous buff lined with army brown, this band 

 fading to white on the last half of the penultimate, the last whorl 

 white, sutural and subsutural bands chocolate, subsutural band lined 

 with pale pinkish cinnamon, below the subsutural band a band of 

 tawny lined with russet, above the peripheral line of tawny the 

 white supraperipheral band shaded with cinnamon buff, below the 

 periphery the ground white banded with army brown, base finely 

 lined with pale brownish drab; lip outer margin vinaceous fawn, 

 inner margin and columella callus white. Length 18.8 mm., greater 

 diameter 12.8 mm., spire height 9.8 mm., number of whorls 6^. 



A narrow form with a narrow sutural band (pi. 10, fig. i) has the 

 embryonic whorls white; postembryonic whorls white, banded below 

 the burnt umber sutural band with a band of white, burnt umber, and 

 sayal brown, on the last whorl the sayal brown band lightening to 

 cinnamon buff and fading out on the last half whorl, the white ground 

 shaded by faint bands of pinkish buff, base lined with fawn color. 

 Length 18.3 mm., greater diameter 12.0 mm., spire height 10.4 mm. 



A sinistral specimen (pi. 10, fig. la) resembles the pattern of plate 2, 

 figure 24, on the first two postembryonic whorls; last whorl pale 

 pinkish cinnamon, below the subsutural bands of chocolate and 

 pinkish cinnamon, spirally banded at and above the periphery with 



