148 HELIX-ISOMERIA. 



golden flecks above as to appear marbled ; the peristome is narrower 

 than Miller's figures show, and the whorl about as deeply deflexed 

 anteriorly as in H. cymatodes. Alt. 24, cliam. 49 mill. 



H. KOLBERGI Miller. PL 43, figs. 46, 47. 



Partly covered-umbilicate, subdepressed, solid, costulate, very 

 minutely granulate at the carina malleate, shining, blackish-chest- 

 nut, partly tawny beneath ; spire semiglobose, apex rather acute ; 

 whorls 5J, convex, acutely carinated, the first two glossy or very 

 delicately granulate, the third striate, the remaining ones irregularly 

 costulate, impressed above the carina, separated by a crenulated 

 suture ; last whorl turgid anteriorly, angularly deflexed toward the 

 aperture, one-third of it deeply descending, constricted at the aper- 

 ture ; aperture very oblique, broad, subquadrangular ; peristome 

 white, shining, expanded, reflexed, margins connected by a cord of 

 callous, columellar margin dilated, half-covering the umbilicus, 

 forming a right angle with the callous ; lip-tooth single, below the 

 termination of the carina. (Miller.} 



Alt. 26. diam. maj. 53, min. 45 mill. 



Valley of Pilaton, Ecuador. 



Isomeria kolbergi MILLER, Malak. Bl. 1878, p. 167, t. 8, f. 2. 

 See remarks under the next species. 



H. GRANULATISSIMA Miller. PI. 43, figs 41, 42. 



Umbilicate, lenticular, solid, carinate, striate, delicately, closely 

 granulate or ferruginous-punctate, malleate at the carina, chestnut- 

 colored ; spire convex ; little elevated, obtuse ; whorls 5 J, little con- 

 vex, separated by lightly impressed sutures ; first whorls very mi- 

 nutely granulate, following striate, the last rounded anteriorly, 

 suddenly deflexed at the aperture, constricted ; aperture very 

 oblique, wide, subquadrangular ; peristome pallid, expanded, re- 

 flexed, the right margin bidentate, one obsolete tooth above, and 

 another acute one below the carina; basal margin thickened, a 

 little plicate ; columellar margin a little dilated, partly covering the 

 pervious umbilicus ; terminations of peristome connected by a cord- 

 like callous. (Miller.') 



Alt. 23, diam. maj. 52, min. 44 mill. 



Nanegal, Ecuador. 



Isomeria granulatissima MILLER, Malak. Bl. 1878, p. 168, t. 8, 

 f. 3. 



