206 



ZONlTIDvE. 



Tenneniia thwaitesi, Humbert, Rev. et Mag. Zool 1862, p. 42, pi. 17, 



fig. 1 ; Semper, Reise Philip., Wiss. Res. 1870, p. 7. 

 Vega nordenskioldi, Wester lund, Vega-Exped. iv, 1887, p. 188, pi. 2. 



Shell in general thin, slightly convex, ovate, white, the apex 

 forming a email point at the right side and near the posterior end, 

 not involute. 



Hob. The Western Ghats as far north as the Kadur district of 

 Mysore and perhaps to Mahableshwar. Hill-tracts of Ceylon. 

 The original locality was Mahe, a French town between Calicut 

 and Cannanore on the Malabar coast, and not, as was supposed, 

 Mahe in the Seychelles Islands. 



Animal yellowish brown or olivaceous, sometimes almost black, 

 and generally mottled with dark blotches. 



[The mantle has two narrow raised ridges on the shell-lobes, 

 one running from the little shell-aperture round the left margin 

 of the shell, the other towards the respiratory orifice on the right 

 margin.] 



The size appears to vary up to about 8 inches in length. 



Teeth of radula in one 'specimen 88 . 3 . 20 . 1 . 20 . 3 . 88 (11 1 . 

 1 . Ill), in another 95 . 2 . 18 . 1 . 18 . 2 . 95 (115 . 1 . 115). 



A species of this genus was found by me at Mahableshwar. It 

 was less than 2 inches in length and the shell is only 7 mm. long. 

 It may have been a young specimen of M. dussumieri or a smaller 

 species. 



-311. Marisella beddomei, Godwin-Austen, Girasia (Dekhania), Mol. 

 Ind. i, 1888, p. 243, pi. 58, figs. 1-1 b (animal), 2-2 b (shell), 

 pi. 62, figs. 7-7 a (jaw and radula), var. nigra, pi. 58, fig. 5, 

 var. maculosa, pi. 58, fig. 4, var. fig. 6 j Webb, Proc. Mai. Soc. iii, 

 1898, p. 154, pi. 9, fig. 7. 



Shell thinner than in M. dussumieri, shelly, flat and smooth 

 beneath, white, with close, concentric lines of growth. 



Length of a specimen 12, breadth 6| mm. 



Hob. Travancore Hills. 



Animal varying greatly in colour from uniform ochre to deep 

 grey-black or spotted ; [no raised ridges on the shell-lobes] ; ex- 

 ternally similar to M. dussumieri, but larger, about 4 inches in 

 length when fully extended, and having more numerous teeth in 

 the radula, the number in a row being 122 . 5 . 21 . 1 . 21 . 5 . 122 

 (148 . 1 . 148), and the shape differing somewhat. There are also 

 differences in the genitalia, the spermatheca and the expansion 

 in the free oviduct (ovitheca) having different forms. 



Genus PSEUDAUSTENIA. 



Pseudaustenia, Cockercll, P. Z. S. 1891, p. 225 (no description) ; 

 A. M. N. H. (6) vii, 1891, p. 99. 



Type, P. atra, Godwin-Austen. 



Mange. Hills of Southern India, Nilgiris, and Travancore. 

 Shell oblong or ovate, ear-shaped, flat above ; apex slightly 

 involute ; none of the whorls enclosed beneath, the whole shell 



