INDEELLA. 49 



Type, /. ampulla (Bs.). 



Range. Western slopes of Syhadri Eange in Malabar. 



Shell Vitrina-like, imperforate, with few whorls and a very 

 large aperture. 



Animal similar to that of Arwphanta, but larger, not fully 

 retractile within the shell. Mucous pore of moderate size; no 

 distinct overhangiing lobe or a small one. Sole undivided, very 

 smooth. No shell-lobes ; dorsal lobes well developed, the left 

 divided into an anterior and a posterior part by a deep sinus. 

 Kale-sac small, receiving the vas deferens; retractor muscle attached 

 to long straight caecum given off at the junction of the nagellum 

 of the male organ. Spermatheca oval, very short, on a short 

 stem. A material organ (dart-sac) stout and long. Jaw straight, 

 with a slight convexity on cutting-edge, no median projection. 

 Eadula broad, with about 100 rows of teeth: 145 . 17 . 1 . 17 . 145; 

 median tooth and the 17 on each side (admedians) long, broadly 

 pointed, straight-sided, lateral cusps indistinct ; laterals curved, 

 aculeate, outer laterals bicuspid. 



77. Indrella ampulla, Bs. (Helix) A. M. N. H. (2) v, 1850, p. 213 ; 

 Pfr. (Helix) Man. Hel iii, 1853, p. 27 ; id. t. c. iv, p. 9 ; id. t. c. 

 vii, 1876, p. 57 ; Elf. J. A. S. B. xxxiv, 1866, p. 39; H. 8f T. 

 (Helix) C. I. pi. 25, fig. 4 ; Nev. (Nanina) Hand-l. i, 1878, p. 54 ; 

 Godwin-Austen, Proc. Mai. Soc. iv, 1901, p. 187, pi. 18 [animal 

 and anatomy]. 



Shell imperforate, obliquely ovate, globose, very thin, half the 

 thickness consisting of epidermis, marked throughout with plicate 

 lines of growth, crossed by faint impressed spiral lines, and on 



Fig. 28. 



the last whorl by shallow irregular furrows, brownish olive, some- 

 times darker brown; spire small, convex, obtuse; whorls 3|, 

 rapidly increasing, the last much larger, rounded at the periphery 

 and beneath ; aperture very large, oblique, roundly oval, the same 

 colour within as without, but smooth and glossy ; peristome thin, 

 membranaceous, coluinellar margin much curved inwards. 



