20 TESTACELLIDvE. 



8. B. xl, pt. 2, 1871, p. 169 ; Pfr. Mon. Hel vii, 1876, p. 505 ; 



H. 8f T. (Pupa) C. I. 1876, pi. 100, tig. 6; Nev. (Ennea-Hut- 



tonella) Hand-l. 1878, p. 6. 



Pupa mellita, Gould, Proc. Bost. Soc. N. H. ii, 1846, p. 98. 

 Pupa (Ennea) ceylanica, Pfr. P. Z. S. 1855, p. 9 ; id. Mon. Hel iv. 



1859, p. 342 ; H. $ T. C. I. 1876, pi. 100, tig. 4. 



Shell subcylindrically turreted, smooth, polished, translucent, 

 yellowish white ; spire slightly attenuate above, apex very obtuse, 

 suture impressed, crenulate ; whorls 7 (6-8-^), slightly convex, the 

 last deeply indented externally and basally behind the peristome ; 

 aperture nearly vertical, truncated, semioval, containing four teeth, 

 one parietal fold, close to the angle, continuous with the peri- 

 stome and running into the colutnellar side ; the second the largest, 



Fig. 12. Ennea bicolor , and aperture f. 



triangular, on dextral margin of the peristome, opposite the first * ; 

 peristome subtubular, the third small and basal, the fourth colu- 

 mellar, a curved fold commencing inside and running obliquely 

 inwards ; peristome white, expanded, curved back into a sinus at 

 the angle. 



Length 7, breadth 2, height of aperture 1^ mm. Other speci- 

 mens are smaller ; I have adults only 4 uim. long. 



Hob. Almost throughout India, Ceylon, Burma, and Nicobar 

 Islands, chiefly in open or cultivated plains, not, as a rule, in 

 forest. This shell occurs throughout the greater part of the 

 Indian region, also in the Seychelles and Masearene Islands, and 

 in several islands of the West Indies, where it has probably been 

 introduced by man. 



The spire varies considerably, some shells being much more 

 attenuate above than others. 



[The animal, taken from Stoliczka's description, has a long body, 

 laterally strongly compressed, posteriorly shortened, though on 

 the whole a little more produced than in Streptcurit, more or less 

 distinctly yellowish, on the bead reddish ; pedicles long, slightly 

 thickened at the end, their external skin is yellow, but the internal 

 eye-bearing peduncles are vermilion ; eyes very small ; tentacles 

 small, pale reddish ; mantle deep red. The internal anatomy 



* [Stoliczka says, and he examined the animal, " Two of the teeth are placed 

 at each side of the posterior (or upper) angle of the mouth, producing a sort of 

 canal, in which terminates the pulmonary orifice and the anus."] 



