150 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



The usual form and color pattern ([)!. 3, fig". 13) has the enil)ryonic 

 whorls ochraceous tawny ; iirst fourth postembryonic whorl cinnamon 

 drab axially streaked with tilleul buft', next whorl and a fourth gull 

 gray axially streaked and finely lined with vinaceous slate, last half 

 of penultimate and first fourth of last whorl gull gray heavily axially 

 streaked and finely lined with dusky drab, the second fourth of last 

 whorl dark livid brown, last half whorl cinnamon drab axially streaked 

 with deep brownish drab and faintly spirally banded or tinged with 

 a faint tint of dark heliotrope gray; impressed sutural band pale 

 ochraceous bufi' on the first two whorls spotted with cinnamon buff, 

 on the last whorl the color is cinnamon ; lip and columella callus light 

 vinaceous fawn. Length 20.0 mm., greater diameter 13. i mm., spire 

 height 11.2 mm., number of whorls 6-1. 



The darkest color pattern (pi. 10, fig. 25) and the obese form of 

 the shell has the first three- fourths postembryonic whorl axially 

 streaked with gull gray and dusky brown, the next or last whorl and 

 a half is almost solid dusky brown with faint axial streaks and spiral 

 lines of light quaker drab which are almost obsolete ; impressed 

 sutural band burnt umber. Length 18.8 mm., greater diameter 13.8 

 mm., spire height 9.3 mm. An extreme narrow shell and light grayish- 

 brown pattern (pi. 10, fig. 25a) has the first postembryonic whorl 

 and a half pale smoke gray axially streaked and faintly spirally lined 

 with light grayish olive, the last whorl pale smoke gray spirally lined 

 and axially streaked with hair brown, last one-fourth whorl tilleul 

 bufif axially streaked with verona brown. Length 17.8 mm., greater 

 diameter 11. 2 mm., spire height 10.2 mm. 



Meinecke first collected locality 290''' in 1914 and obtained 109 

 shells, 93 percent of which are dextral. In 191 7 he again went to 

 the same region and collected 83 shells, 86 percent of which are 

 sinistral. Since all Meinecke's plotting before 1933 is done from 

 memory it is probable that these two lots represent slightly ditiferent 

 localities. The sinistral lot appears to have more bluish forms than 

 the lot of dextral shells. The usual dextral color patterns resemble 

 typical A. a. apicata. It is ix)ssible that the dextral locality may be 

 one closer to the area of A. a. apicata than the sinistral lot and so 

 transitional specimens between the two forms are found. 



The usual form of a dextral (pi. 10, fig. 25^) has the embryonic 

 whorls ochraceous tawny ; first postembryonic whorl and a half axially 

 streaked with natal brown and pallid mouse gray, last whorl and a 

 half hay's brown, axially streaked with tilleul bufi^, and sorghum 

 brown and faintly spirally lined with benzo brown ; impressed sutural 

 band cinnamon ; lip and columella callus a very dilute tint of pale 



