ABIOPHANTA. 33 



above by fine subobsolete impressed lines ; spire conoid, apex sub- 

 acute ; suture slightly impressed ; whorls 5, almost flat above, 

 rapidly increasing, the last keeled at the periphery, descending 

 beneath the keel towards the mouth, swollen beneath, somewhat 

 compressed around the perforation ; aperture diagonal, rounded ; 

 peristome in one plane, slightly thickened and a little expanded in 

 adults, columellar margin broadly reflexed. 



Major diam. 30, min. 24|, axis 21 mm. 



Hah. S. Canara (Beddome). 



This shoiild perhaps be considered a race of A. intumescens, from 

 which it is distinguished by smaller size, greater thickness, 

 especially at the peristome, stronger decussated striation, higher 

 and more acute apex, the presence of a keel, and a more open 

 umbilicus. A small specimen measures 26, 2U, and 17=1 mm. in 

 the three dimensions. 



59. 



B. Openly and deeplij umhilicated. 



Ariophanta cysis, Bs. (Helix) A. M. N. H. (2) ix, 1852, p.404- 

 rfi: (Helix) Mon. Hel. iii, 1853, p. 92; iil t. c. iv, 1859, p. 174 • 

 id. t. c. vii, 1876, p. 277 ; H.^- T. (Helix) C. I. 187G,p. 13, pi. 25, 

 fig. 5 ; Godwm-Austen, Mol. Ind. i, 1883, p. 139 ; id. t. c. ii 

 1898, pi. 82, fig. 7 (teeth of radula). 



Helix aiu-is, Pfr. P. Z. S. 1854, p. 286 ; id. Mon. Hel. iv, 1859, p. 173. 



Helix cvstis, Rv. Conch. Ic, Helix, pi. 123, no. 737 (1852). 



Helix ampuUarioides, Bv. t. c. pi. 202, no. 1423 (1854). 



Ariophanta dalyi (subsp.), Blf. Proc. Mai. Sac. iii, 1899, p. 280 

 figs.; Godwin-Austen, Mol. Ind. ii, p. 128, pi. 98, fig. 4 (1899) 

 (genitalia). 



Shell globosely depressed, rather thin, obliquely striated, light 

 yellowish bi'own ; spire convex, apex obtuse, suture slightly 

 impressed ; whorls 4J, rapidly increasing, convex, the last swollen 

 beneath, subangulate at the periphery, not descending near the 

 mouth ; aperture diagonal, ovally lunate, the margins converging ; 

 peristome thin, columellar margin reflected. 



Major diam. 43, min. 35, axis 23 mm. 



Hab. The typical form is from the western side of the Nilgiris 

 (Sispara). A. ampuUarioides is a higher and more globose form 

 also from the Nilgiris, said to measure 42 mm. in major diameter by 

 26 in height. A. dahji is a small, thin, dark shell from Hadur in 

 Mysore, in some respects approaching A. intumoicens. It has a 

 whitish band round the periphery and measures 39, 32, and 

 22 mm. A. ci/sis has also been obtained by Beddome from the 

 Anaimalais. 



Teeth of radula of ojsis 60 . 22 . 1 . 22 . 60. The aduiedians are 

 bicuspid, having a cusp on the outer side; only the rhachidian tooth 

 is tricuspid, the laterals are aculeate. [In the genitalia the male 

 organ is much simpler than in A. Icn'ipes, although of tlie same type. 

 The retractor muscle is given off from a stout long caecum, con- 



D 



