Original Descriptiovs of Achativelta. 41 



Rather thin with lip acute and scarcel}- thickened within ; 

 pass into A. Incddii Newc, found in the same locality-. Average 

 weight 5.30 grains. 



Var. Y. Dark brown or cinnamon throughout. 



Var. Z. Grey, with fine black lines. 



Var. AA. Yellowish white or grey, with two broad black or 

 chestnut bands, one entering the aperture. 



Var. BB. Brown or slate, with two white bands, one sutural, 

 the other on the periphery of the whorl. 



Var. CC. Greyish pink, with one or two broad white bands 

 at the base. 



Var. DD. Grey above, yellow at the base. 



Var. EE. White, with broad pale bands of grayish pink. 



Var. FF. Fawn, with a narrow black band entering the aper- 

 ture, and sometimes with a dark sutural line. 



\'ar. GG. White or pale greyish pink, with one or two narrow 

 slate or chestnut bands. 



Var. HH. White above, brown at the base. 



Var. II. Bright chestnut, with white sutures, light pink 

 columella. 



With spire more convex and colors less streaked ; pass into 

 A . phoeozoiia , vars . I-O . 



\'ar. JJ. Light brownish grey, with several black spiral lines. 



Var. KK. Brown or slate colored, with two white bands, 

 I sutural, the other on the periphery of the last whorl. 



Var. LL. With a broad black zone at the base. 



Var. MM. Olive brown, with 2 dark bands, a broad one 

 entering the aperture, the other narrower, revolving above the 

 suture. 



Var. NN. Light fawn, with i or 2 white bands at the base. 



Var. 00. White, with oblique yellowish streaks. 



Var. PP. Fawn-colored, plain or wfth dark brown bands ; 

 sutures white ; approaches A. ccrvina Nob. 



Remarks. A neat species, differing from A. phceozona in its 

 smaller size, more conic spire, and in the streaked arrangement of 

 its colors. The typical specimens are much thicker and heavier 

 than A. biiddii Newc, and it never has the black tip of that spe- 

 cies. We have seen but one dextral specimen, which has been 

 mentioned under var. S'. 



