ANOMA. 21 



the greater portion of the spot lying below it. The outer lip 

 is sinuous and retracted above; the columellar lip strongly 

 notched at the insertion. Columella indistinctly truncate be- 

 low, slender and slightly sinuous within (pi. 11, fig. 78). 

 Length 19, diam. 6.5 mm. with iy 2 whorls to 20 x 6 mm. with 

 8 whorls. 



This form differs from unicincta in the higher position of 

 the principal band, the absence of a gray belt above the 

 suture and of gray variegation of the spire, and in wanting a 

 pink streak behind the lip. The shape and sculpture are 

 about the same in the two forms. Var. bicincta is identical 

 with levis except in the color, which is far paler, with the dark 

 markings much reduced. 



126. Var. CONCINNA (C. B. Adams). PI. 19, figs. 38, 39, 40. 



Small, but stout in figure; glossy, faintly striatulate, the 

 last half of the last whorl finely striate ; pale yellow or gray- 

 white, the last half of the last whorl opaque-white, with a 

 Hack-brown band above the middle, and stopping far short of 

 the lip ; base and a streak behind the lip waxen. Keel strong 

 and acute. Aperture oblique, the peristome white, thin and 

 in a plane, not retracted or notched at the ends. Columella 

 strongly truncate. Length 14 to 15, diam. 5 to 5.3 mm., 

 whorls 7. 



East part of Manchester, on the Whitney River estate (C. 

 B. Ad.) ; "Whitney (Jarvis). 



C. m. var. concinna C. B. A., Contrib., p. 164. 



Similar to the larger var. bicincta, but there is no basal 

 dark patch and the lip differs, being thin and not sinuous. 

 It is quite a distinct race, and should, perhaps, be treated as 

 a separate species. 



12c. Var. UNICINCTA (C. B. Adams). PI. 19, figs. 46, 47, 



48, 49. 



Shell somewhat fusiform, rather solid, opaque-white, with 

 some gray streaks and speckling on the spire, and a translu- 

 cent-gray belt above the suture of the last 2 or 3 whorls, be- 

 coming a purple-brown band on the last whorl, below the 



