HELIX-POMATIA. 239 



mention of this form in the literature, but it is an unusually well- 

 marked species. 



H. AMBIGUA Parr. var. ^ETOLICA Kobelt. PL 46, figs. 38, 39. 



Differs from the type in being larger, more dilated, the spiral 

 lines almost completely absent; bands 5, either all confluent on the 

 latter part of the whorl, or the upper and lower ones uniting to form 

 two wide bands. (Kob., in Rossm. Icon. n. f. v, p. 106, f. 936, 937.) 



Alt. 41, greater diam. 41, lesser 35 mill. 



Alt. 42, greater diam. 45, lesser 37 mill. 



Environs of Vrachori, Aetolia, Greece. 



The lettering on Kobelt's plate is " H. ambigua var. acarnanica" 



H. VALENTINI Kobelt. PL 46, figs. 58, 59. 



Shell imperforate, conic-globose, solid, thick, smooth, but showing 

 close fine spiral lines under the lens, and rather blunt regular lines 

 of growth ; here and there malleated ; whitish, stained here and 

 there with reddish-brown, having five reddish subequal bands, the 

 second and third becoming confluent toward the aperture ; spire 

 elevated, conical, apex large, white, flattened ; whorls 5, convex, 

 separated by irregularly and slightly impressed suture, regularly and 

 rather rapidly increasing, the last large, deeply descending in front ; 

 aperture oblique, lunate, rounded, bluish-white 'within, showing the 

 bands ; peristome straight, obtuse, thick ; margined with reddish- 

 brown within, and then having a thick whitish lip ; margins sub- 

 parallel, joined by a thin brown callus; columellar margin thick, 

 reddish-brown, straightly ascending. (Kob.) 



Alt. 46, diam. 44 mill. 



Kalymnos, Greece. 



H. (Pomalia) valentini KOB., in Rossm. Icon. n. f. v, p. 27, f. 772. 

 Allied to H. secernenda Rossm., of Dalmatia. 



H. ASEMNIS Bourg. (Vol. IV, p. 245). Var. HOMERICA Martens. 



PL 46, fig. 40. 



In general characters agreeing with the descriptions and figures 

 of the type, but thin shelled, somewhat shining, pale reddish-gray, 

 with two broad, dark red-gray bands (formula 123 and 45, as usual 

 in cincta) ; as high as wide, or higher; peristome scarcely thick- 

 ened, the columellar margin pure white, beautifully arched, propor- 

 tionately narrow, especially the reflection upon the umbilical tract 

 and parietal wall very thin, hardly noticeable, and without definite 



