258 ZONITID^. 



typical trochiform, small, thin, horny, as a rule obliquely sub- 

 costulate or striated, and not spirally above ; ^^^horls increasing 

 slowly, the last very little larger; peristome thin. 



The auimal of only one species, K. harrakpo7'ensis, is known and 

 this very imperfectly. It is much like that of Sitala, and has a 

 distinct caudal gland with a lobe above it. There is, however, no 

 dart-sac, and there is a pear-shaped kale-sac at the junction of 

 the vas deferens with the penis ; no caecum leads to the retractor 

 muscle, which is attached to a fold. The spermatheca has not 

 been described. The radula differs from that of Sitala in the 

 small number of teeth in each row (67 in K. harraTcporensis, 

 against 307 in S. infula or 405 in -S^. attegia) and in the larger 

 number of broad admedian teeth. 



Unfortunately so few animals have been examined that the 

 generic position of several species included in the genus must 

 remain very doubtful ; this is more especially the case with those 

 allied to K. ? nana. It is quite uncertain whether several of the 

 small forms attributed to Sitala should not be assigned to the 

 present genus and vice versa, nor can any hne be drawn to dis- 

 criminate between the small shells of those two genera and the 

 smaller species included in MacrocMamys. 



I. Imperforate or narroivly perforate. 



A. TrocJiiform, carinate at periphery . 



a. Height and diameter nearly equal. 



398. Kaliella barrakporensis, Pfr. (Helix) P. Z. S. 1852, p. 156 ; id. 

 (Helix) Man. Hel. iii, 1853, p. 59 ; id. t. c. \\, 1859, p. 33 ; id. t. c. 

 V, 1868, p. 86 ; id. t. c. vii, 1876, p. 100; Bs. (Helix) A. M. N. H. 

 (3) iii, 1859, p. 272 ; W. S,- H. Blf. J. A. S. B. xxx, 1861, 

 p. 358 ; Blf. A. M. N. H. (3) xi, 1863, p. 83 ; Stol. J. A. S. B. 

 xl, 2, 1871, p. 237 ; H. ^- T. (HeUx) C. I. 1876, pi. 87, fig. 7 ; 

 Nevill, Nanina (Microcystis), Hand-l. i, 1878, p. 41; Theobald, 

 J. A. S. B. 1878, 2, p. 142 ; Godwin- Austen, Mol. Ind. i, 1882, 

 pp. 2, 19, pi. 1, figs. 1-4 (shell), pi. 2, tig. 1 (shell), pi. 5, fig. 11 

 (radula) ; 1883, p. 146, pi. 38, tig. 5 (genitalia). 

 Helix sivalensis, Sutton, MS. ; Bs. I. c. ; Godiuin-Austen, Mol. Ind. 

 i, 1882, pi. 1, tigs. 3, 3 a, pi. 2, fig. 1 (shells). 



Shell subperforate, pyramidally trochiform, thin, obliquely 

 striated [or rather microscopically costulately ribbed] above, con- 

 centrically and fairly closely marked with impressed lines on the 

 base, smooth, translucent, horny brown ; spire conical, sides very 

 slightly convex, suture impressed ; whorls 6, convex, slowly 

 increasing, the last keeled, not descending, slightly convex beneath ; 

 aperture oblique, subquadrately lunate ; peristome simple, thin, 

 straight ; columellar margin slightly oblique, reflected, concealing 

 perforation. 



Diam. 3^, height 3| according to Pfeiffer, but varying, and 

 height often less than diameter. 



