ARIOPHANTA. 35 



II. Dextrorse. (CRYPTOZONA, XESTIUA, or NILGIRIA.) 



A. Colour uniform or nearly so ; no spiral bands of colour. 



a. Decussated. 



a'. Radula with broad band of median teeth. Left dorsal lobe 

 undivided. 



61. Ariophanta semirugata, Beck (Galaxis), 2nd. p. 42 (1837); 

 Pfr. (Helix) Mon. Hel i, 1847, p. 40 ; id. t. c. vii, p. 75 ; H . $ T. 

 (Helix) C. 2. 1876, pi. 59, tig. 4 ; Nev. Hand-l i, 1878, p. 61. 



Helix globulus, Mart, fy Chemn. Syst. Conch.- Cab. ix, 2, p. 126, 

 pi. 130, figs. 1159-60 (1786); nee Mull Hist. Ver. ii, p. 68 

 (1774). 



Galaxis tranquebarica, Fabr. MS.. 1876, Beck, I. c. no descr. ; Pfr. 

 (Helix) Mon. Hel. i, 1847, p. 41 ; id. t. c. vii, p. 75 ; Stol. (Helix) 

 J. A. S. B. xli, 1872, 2, p. 212 (footnote) ; Godwin-Austen (Nilgiria), 

 Mol. 2nd. ii, p. 78, pi. 81 [figs. 3-3 d, animal, genitalia, with 

 spermatophore ; pi. 82, fig. 3, radula (1898)] ; id. t. c. ii, p. 135 

 (1899) [pi. 94, figs. 5-5 e, spermatophore], pi. 98 [figs. 2-2 &, 

 anatomy and sculpture]. 



Shell perforate, globose or globosely conoid to depressedly 

 globose, pale brownish to whitish, finely decussated above with 

 oblique striae and spiral impressed lines, the latter sometimes 

 faint or wanting ; smoother below ; suture very little impressed ; 



Fig. 21. Ariophanta semirugata. {. 



whorls 5-6, slightly convex, the last large and swollen, generally 

 descending near the mouth ; aperture roundly or ovally lunate ; 

 peristome thin, reflected near the umbilicus. 



Major diam. 33, min. 28, height 28 mm. 



Hab. The greater part of the Peninsula of India from the 

 Nerbudda and Son southwards, Cutch (Stoliczkd)-, also in Northern 

 Ceylon. Common in open country. 



A very variable shell, the spire especially varying in elevation. 

 An average specimen (figured) from Trichinopoly gives the 

 measurements above quoted ; others from the same place measure 

 37, 33, 34, and 33, 30, and 35 mm. Another measures 30, 25, 24. 



