NO. I ACHATINELLA APEXFULVA DIXON — WELCH 69 



The usual yellow pattern and obese form of the shell (pi. 6, fig. 4a) 

 has the first half postembryonic whorl ochraceous tawny banded on 

 the lower half of the whorl with pale ecru drab, remaining whorls 

 chamois splotched with snuff brown, hessian brown, and saccardo's 

 umber, supraperipheral band on the last whorl warm sepia, last 

 whorl below the periphery ornamented with zigzag streaks of snuff 

 brown; impressed sutural band warm sepia. Length 19.4 mm., greater 

 diameter 14.5 mm., spire height 9.7 mm. 



The lightest or yellowish white color pattern (pi, 6, fig. 4b) has the 

 postembryonic whorls white, on the first quarter whorl a patch of 

 mars brown, remaining whorls streaked with ochraceous tawny; im- 

 pressed sutural band on the first postembryonic whorl and a half 

 diamine brown, last whorl and a half the sutural band is the color 

 of the whorl below ; lip light vinaceous fawn. 



The typical form of a dextral shell and a variant of the yellow 

 color pattern is figured on plate 6, figure 4c'; first two postembryonic 

 whorls pale gull gray, axially streaked with zigzag lines of neutral 

 gray and deep neutral gray, and ochraceous tawny, last whorl 

 cartridge buff tinted with cream color streaked with white and with 

 axial splotches of ochraceous tawny, prout's brown, and mars brown. 

 Length 19.5 mm., greater diameter 13.7 mm., spire height 9.4 mm. 



A characteristic gray color pattern (pi. 6, fig. 4c?) is also found in 

 all turgida localities; the postembryonic whorls are pale gull gray 

 spirally banded lined and splotched with diamine brown. The yellow 

 color pattern (pi. 6, fig. 4e) may lack or have very little axial 

 splotching ; the first two postembryonic whorls are cartridge buff tinted 

 with deep olive buff, last whorl chamois spirally lined and banded 

 with chestnut and faintly axially streaked on the last half whorl with 

 chestnut. 



The size of the dextral shells varies from narrow specimens (pi. 6, 

 fig. 5) to obese forms (pi. 6, fig. 6). The shell of figure 5 is a 

 peculiar rare color pattern of the reddish-brown form, having a 

 subperipheral chamois band faintly streaked with tawny on the last 

 whorl, the remaining postembryonic whorls diamine brown; outer 

 margin of lip army brown shading to white on the inner margin; 

 columella callus white. Length 19. i mm., greater diameter 12.5 mm., 

 spire height 10.6 mm. The obese form of figure 6 measures : Length 

 19.2 mm., greater diameter 14.1 mm., spire height 9.6 mm.; the 

 postembryonic whorls diamine brown spirally lined with apricot 

 yellow on the penultimate, and banded and lined on the last whorl 

 with mars yellow, light buff, or antimony yellow, which bands are 

 axially streaked and lined with diamine brown or mouse gray. 



