HELIX-CHLORITIS. 245 



flexed in front ; aperture diagonal, subtriangular, peristome ex- 

 panded all around, rosy, upper margin angled above near the suture. 

 Alt. 9, greater diam. 19, lesser 14 mill.; apert., length 9J, alt. 



9 mill. (Mart.) 



Ceram, Moluccas. 



H. martensi PFR. P. Z. S. 1861, p. 193 ; Mouogr. v, p. 389. 

 MARTENS, Ostas. Landschn., p. 279. 



Stands between unguiculastra and unguiculina, nearer the last, 

 but distinguished by the less sunken spire, wider umbilicus and less 

 high shell. 



H. CHERATOMORPHA Tapparone Canefri. PI. 51 , figs. 48, 49, 50, 51. 



Shell umbilicated, discoidal, somewhat solid, lightly striated, all 

 over closely impressed-puuctate, rufous, the umbilicus and peristome 

 whitish ; spire compressed, in the middle immersed. Whorls 5J, 

 separated by an impressed suture, the upper ones flattened, the last 

 cylindrical, large, deflexed in front ; umbilicus moderate, deep. 

 Aperture oblique, lunar, pale inside ; peristome a little thickened, 

 narrowly expanded above, reflexed beneath, margins approaching, 

 the right margin ascending a little from the insertion, then incurved, 

 basal margin nearly straight, columellar little-oblique, slightly 

 dilated. Alt. 16, greater diam. 38, lesser 31 mill. (Can.) 



Island of Sorong, New Guinea. 



H. cheratomorpha CANEFRI, Ann. Mus. Civ. Genova, xix, p. 167, 

 t. 4, f. 15-18, 1883. H. unguicula CANEFRI, Ann. Mus. Civ. Genov. 

 ix, p. 289, 1876-77 (not of Ferussac.). 



*** 

 H. BIFOVEATA Benson. PI. 50, fig. between 36 and 42. 



Shell umbilicated, subglobose, concave above and below, obliquely 

 striated and most minutely granulated, buffisli-brown, translucent ; 

 spire profoundly excavated, perspectively umbilicus-shaped ; whorls 

 4, narrow, convex, receding, the last one prominent, inflated, com- 

 pressed above, compressedly-angulate around the moderate, perspec- 

 tive umbilicus beneath. Aperture vertical, very long, projecting 

 beyond the body-whorl above and below, very narrowly crescentic, 

 subangular above and below ; peristome simple, acute, a little ex- 

 panded, the margins remote, converging, columellar margin short, 

 subvertical, lightly expanded. Alt. 6, greater diam. 10, lesser 9 

 mill. Aperture, alt. 7, width scarcely 2 mill. (Pfr.) 



Village of Tkerabuin, Tenasserim Valley, Burmali. 



