204 



V-shaped depression. The extremity of the foot with a long soft 

 overhanging lobe. Internal anatomy not known. It is repre- 

 sented by a single species, but no doubt others will be found on 

 the eastern frontiers, Burmah, &c,] 



309. Cryptogirasia rubra, Godwin- Austen (Parmarion), J. A. S. B. 

 1875, 2, p. 6, pi. 2, tigs. 4-4 c (animal crawling and shell) ; id. 

 Mol. Ind. i, 1888, p. 228, pi. 61. figs. 4-4 d (animal and shell). 

 [FzWefig. 64 D, p. 184.] 



Shell quite rudimentary, a small oval shelly disk about 3| mm. 

 long. 



Hob. Kohima, Anghami Naga Hills (Godwin-Austen}. 



" Animal of a fine orange-pink, grey on underside of the foot ; 

 tentacles short ; mantle entirely covering the shell, with only a 

 slight trace of a longitudinal opening running back from the 

 anterior left side ; three parallel bands of greenish grey along the 

 back of the neck, the eye-tentacles being of the same colour. The 

 gland at extremity of foot with a long overhanging lobe." 



Length of animal when moving 1*8 inches (45 mm.). 



The generic relations of this animal are doubtful. 



Genus MARLffiLLA. 



Marisella, Gray, Cat. Pulm. B. M. pt. 1, 1855, p. 62 ; Webb, Proc. 



Mai Soc. iii, 1898, p. 151 ; Godwin-Austen. Mol. Ind. ii, 1899, 



p. 113. 



Tennentia, Humbert, Rev. et Mag. Zool. 1862, p. 427, pi. 17. 

 Vega, Westerlund, Veya-Exped. iv, 1887, p. 188, pi. ii. 

 Dekhania, Godwin- Austen, Mol. Ind. i, 1888, p. 242, pis. 52 & 62. 



Type, M. dussumieri, Gray. 



Range. Western Ghats, from Mahableshwar southwards, and 

 hill-country of Ceylon. 



Shell internal, solid, ovate, convex above, flatly concave beneath, 

 with a small apex, not coiled, lying on the right side as seen from 

 about near the end. 



Animal very similar to that of Girasia, but the lobes of the 

 mantle united into an oval shield, tricarinate above and completely 

 covering the shell, only a small pinhole-like orifice [near the pos- 

 terior end] being left open. From this small orifice a distinct 

 line or cicatrix runs to the respiratory aperture on the right 

 side, [marking the dividing line of the right and left shell-lobes]. 

 The mantle extends forward over the neck, but not behind the 

 shield, which is sunk behind in a depression of the back. The 

 body behind the shield is sharply keeled above and terminates in a 

 large mucous pore. Peripodial groove distinct as usual, but narrow, 

 and sole tripartite longitudinally. 



Qenitalia and odoritophore much resembling those of Girasia. 

 The dart-sac is long and cylindrical. There is a large swelling 

 of the free oviduct (ovitheca) just beyond the point where the 

 vas deferens is given off. The spermatheca is rather irregularly 

 ovate, and increases in size when containing numerous spermato- 



