ARIOPHAtfTA. 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. 



Hab. S. Canara (Beddome). 



This should 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, 21|, and 17| mm. in 

 the three dimensions. 



B. Openly and deeply umbilicated. 



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



Pfr. (Helix) Mon. Hel. iii, 1853, p. 92; id. t. c. iv, 1859, p. 174 ; 



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



fig. 5 ; Godwin-Austen, Mol. 2nd. i, 1883, p. 139 ; id. t. c. ii, 



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



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

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

 Helix ampullarioides, Rv. t. c. pi. 202, no. 1423 (1854). 

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



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



(genitalia). 



Shell globosely depressed, rather thin, obliquely striated, light 

 yellowish brown ; spire convex, apex obtuse, suture slightly 

 impressed ; whorls 4^, 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. ampullarioides is a higher and more globose form 

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

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

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

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

 22 mm. A. cysis has also been obtained by Beddome from the 

 Anaimalais. 



Teeth of radula of cysis 60 . 22 . 1 . 22 . 60. The admedians are 

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

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

 organ is much simpler than in A. Icevipes, although of the same type. 

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



P 



