3861 .] 
355 
Contributions to Indian Malacology. 
No. 10. — Helix tricarinata, n. s. PI. I. fig. 10. 
Testa aperte perforata, depresso turbinata, tenuis, pallide cornea, 
oblique striatula, subtus obsolete decussata. Spira conoidea, apice 
planulata, perobtusa, sutura impressa. Anfr. 4 convexi, superne 
carinis duobus filiformibus eincti ; ultimus ti’ibus medianis, non des- 
cendens, subtus rotundatus. Apertura subverticalis, rotundato-lunaris ; 
peristoma rectum, acutum, marginibus distantibus, sinistro non re- 
flexo. 
Diam. If Alt. 1 turn, 
vel „ 0.06 „ 0.04 unc. 
Hab. prope Pykara ad summos montes Nilgiris. 
Distinguished from its cog-eners by the possession of three spiral 
ridges at the periphery of the last whorl, besides other characters. 
No. 11. — Helix tertiana, n. s. PL I. fig. 31. 
Testa perforata, depresse turbinata, tenuis, pallide cornea, striatula ; 
spira eonoidea, apice obtusa, sutura impressa. Anfr. 6 angusti, con- 
vexi, ultimus baud descendens, subtus rotundatus. Apertura subver- 
ticalis, rotundato lunaris ; peristoma simplex, marginibus distantibus, 
columellari reflexiusculo. 
Diam. maj. 2£, min. 2f, Alt. If mm. 
vel „ 0.1 „ 0.09 „ 0.07 unc. 
Hab. raro ad Pykara : necnon ad Neddiwuttom in montibus Nilgiris. 
The above 3 species have some similarity in general characters, 
although well distinguished from each other. H. tertiana being dis- 
tinguished by its higher spire, narrow perforation, and more numerous 
and closely wound whorls. II. bullula, Hutt. and H. humilis, Hutt. 
of the Western Himalayas, together with some small Cingalese 
Helices appear to belong to the same group. All three of the above 
species occurred at the edges of sholas, in company with Jerdonia 
trochlea, B. sp. Diplommatina Nilgirica, Blanf. and Cyathopoma Mala- 
baricum, Blanf. 
No. 12. — Helix aspirans, n. s. PL I. fig. 12. 
Testa vix perforata, elevata, pyramidalis, vix striatula, tenuis, 
cornea. Spira turrita, apice obtusa, sutura parum profunda. Anfr. 7 
convexiusculi, lente crescentes, ultimus non descendens, basi con- 
vexus, carina obtusa, prope aperturam evanescente, circumdatus. 
Apertura subverticalis, tranverse lunato, semicircularis ; peristoma 
