HELIX-CHLORITIS. 247 



H. LANSBERGIANA Dohm. PI. 50, figs. 26, 27, 28. 



Shell umbilicated, depressed, planorboid, rather solid, light ful- 

 vous, with many rufous zones, striate, densely beset all over with 

 granules (hair-scars arranged in quincunx). Spire plane, sunken in 

 the middle. Whorls 6, a little convex, the last very large, de- 

 pressed-rounded, deflexed in front. Aperture oblique, lunar, bluish- 

 white inside ; peristome milk-white, thickened, right margin broadly 

 expanded and a little reflexed. Columella more shortly reflexed, 

 flexuous, half concealing the narrow umbilicus. Alt. 18, greater 

 diarn. 46, lesser 37 mill. (DohrnJ) 



New Guinea? 



H. lansbergiana DOHRN, Nadir, d. Mai. Ges. 1879, p. 69 ; Con- 

 tinuation of Conchyl. Cab., p. 598, t. 175, f. 1-3. TAPPARONE 

 CANEFRI, Ann. Mus. Civ. Genov. 1887, p. 142. 



Closely allied to H. circumdata, but larger, with broader peristome. 



H. MAFORENSIS Tapparone Canefri. PI. 61, figs. 15, 16. 17. 



Shell broadly and profoundly umbilicated, depressed, plauorboid, 

 solid, waxy-white, encircled by many brown bands and lines. Spire 

 plane, sunken in the middle, whorls 5J, subconvex, longitudinally 

 striated, the last large, rotund, in front moderately descending, sub- 

 flattened beneath, excavated around the umbilicus. Aperture 

 oblique, narrowly lunate, subquadrate, inside whitish ; peristome 

 simple, all around narrowly reflexed, whitish, margins converging, 

 the right margin regularly curved, basal substraightened, columellar 

 ascending, narrowly reflexed. 



Ait. 13, greater diam. 32, lesser 27 mill. (Canefri). 



Island of Major, Bay of Geelvink, New Guinea. 



H. maforensis CANEFRI, Ann. Mus. Civ. Genov. 1877, p. 140, t. 

 1, f. 1-3. 



Differs from H. circumdata and molliseta in lacking hair-scars on 

 the body-whorl, in the coloration, solidity and wider umbilicus. 



Yar. MICROMPHALUS Pilsbry. PI. 52, figs. 77, 78, 79. 



Much smaller than typical maforensis ; whorls 5 ; umbilicus very 

 narrow, one-twelfth the diameter of the shell. 



Alt. 11, greater diam. 21, lesser 17J mill.; Apert., alt. 10, width 

 11* mill. 



Aru Is. 



