NANINA. 17 



N. HIMALAYANA, Lea. PI. 2, figs. 19, 17, 18. 



Narrowly umbilicated, thin, pellucid, costulate above, .light 

 brown, whorls 4^-5, the last subcarinate, often obscurety brown- 

 banded below the carina, base tumid. Diam. 30, alt. 15 mill. 



Himalaya Mts. and Ganges region, India. 



M. interrupta, Benson (figs. 17, 18), is identical. 



N. L^VIPES, Miiller. PI. 2, figs. 20, 21. 



Perforate, thin, incremental striae distinct, decussated b}^ 

 obscure spiral lines ; light corneous ; whorls 4J, the last suban- 

 gulate and banded on the periphery, not descending at the aper- 

 ture, inflated below. Diam. 28, alt. 14*5 mill. 



Malabar, Tranquebar. 



It is Helix Candida and spadicea, Gmelin. 



Yar. TRIFASCIATA, Chemn. Fig. 21. 



Body-whorl three-banded with chestnut. 



X. CYCLOTREMA, Benson. PL 2, fig. 22. 



Umbilicus covered, obliquely striulate, granulate, white under 

 a corneous epidermis ; whorls 4J, apex pitted, suture impressed, 

 periphery obtusely angulated and fasciate, descending at the 

 aperture ; peristome dilated, slightly reflexed, columellar lip 

 covering the umbilicus. Diam. 22, alt 11 mill. 



Himalaya region. 

 N. BROCKET, Adams and Reeve. PI. 2, fig. 23. 



Umbilicus nearly covered, solid, obtusely angulated on the 

 periphery, closely striated and minutely granulated, above undu- 

 latety broadly plicate, shining, chestnut-colored ; whorls 5, the 

 last minutely malleated and dark chocolate-colored below the 

 periphery ; aperture bluish white, the margins joined by a callus, 

 columella dilated over the umbilicus. Diam. 76, alt. 45 mill. 



Borneo. 



Austen writes : The sinistral form of the shell counts for very 

 little. H. Brookei possesses no mucous gland and therefore 

 cannot even be included among the Zonitidse. It is very inte- 

 resting though to note that it has a right and left shell-lobe. 

 Shells of India, Pt. iv, 133. It is Helix gigas, Pfeiffer. 

 2 



