l68 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



I sinistral 1933; 300-6, elevation 1,650-1,700 feet, 1917, 6 dextral 

 1932, 3 sinistral 1934; 300-7, elevation 1,500-1,700 feet, 4 dextral 

 1934; 300-8, elevation 1,550-1.700 feet, 4 dextral 1933, i dextral 

 1934; 301-1-2*, elevation 1,650 feet, 9 sinistral 1932; 300-6-301-2*, 

 elevation 1,650 feet, 1916, all collected by Meinecke; 300-10, elevation 

 i.55o-i)6oo feet, Russ, 4 dextral 1933; 301-1, elevation 1,650 feet, 

 H. B. Baker and Welch, 3 dextral and 6 sinistral 1935 ; 301-2, eleva- 

 tion 1,650 feet, n. B. Baker and Welch, i sinistral 1935. Also col- 

 lected by Wilder, BBM 50631, 50566 (figs. 5, 5a, p. 105). 



The usual form and color pattern (pi. 3, fig. 15) has the embryonic 

 whorls clay color, first fourth postembryonic M^horl pale pinkish buff 

 axially streaked or tinged with cinnamon buff, next half whorl pallid 

 quaker drab axially streaked and banded, below the white sutural and 

 subsutural bands, with a band of deep quaker drab, last whorl and a 

 half above the periphery and below the subsutural band vinaceous 

 slate deepening on the last half whorl to dark purple drab, just above 

 the edge of the periphery and all below, ground pale ecru drab finely 

 lined and faintly streaked with deep quaker drab, on the last half 

 of the whorl streaks and lines dark purple drab, in the umbilical 

 region a patch of pale pinkish buff; lip and columella callus light 

 vinaceous fawn. Length 18.8 mm., greater diameter 12.8 mm., spire 

 height 9.8 mm., number of whorls 6, 



A light color pattern (pi. 11, fig. 9), has the last two postembryonic 

 whorls, below the white sutural and subsutural bands, pale vinaceous 

 fawn shading to light vinaceous fawn on the last half whorl, spirally 

 banded and faintly axially streaked with ecru drab, on the last half 

 whorl Imnds and streaks brownish drab, in the umbilical region a 

 band of pale pinkish buff. 



The usual form of a sinistral shell (pi. 11, fig. 9a) has a color 

 pattern similar to that of plate 3, figure 15, except that the embryonic 

 whorls in this specimen are warm buff. Length 18.7 mm., greater 

 diameter 12.0 mm., spire height lo.o mm. 



In locality 300-4 the usual pattern has a more pinkish ground than 

 the typical pattern. Among these pinkish gray shells two extremely 

 light pink forms are found. One of these (pi. 11, fig. 10) shows an 

 obese shell ; postembryonic whorls with a band of pecan brown below 

 the white sutural and subsutural bands, below which the ground is 

 buff pink streaked and lined on the last whorl with pecan brown ; 

 lip and columella callus pale vinaceous pink. Length 19.3 mm., 

 greater diameter 13.6 mm., spire height 10.2 mm. 



From the data on hand cervixnivea runs from pinkish forms at a 

 low elevation to dominantly light gray shells. At the upper end of 



