HELICIDJ3. 875 



Ponsee and Nantin. This variety is distinguished by its less depressed shape. It is 

 scarcely, if at all, angled at the periphery (the angulation being very distinct in the 

 type form), the peristome not quite so broadly reflected over the perforation ; the 

 substance and texture, perforation, shape of the aperture, and number of whorls are 

 identical. 



Type of var. andersoniana, from Ponsee : axis 6J-, diam. 11 (apert. alt. 4, diam. 

 5J mm.) 



Specimen from Chittagong : axis 7, diam. 13 (apert. alt. 6, diam. 6J mm.). 



Specimen from Khasi Hills : axis 7, diam. 15 mil. 



Typical N. honesta, from Pegu : axis 6, diam. 12 (apert. alt. 5 J, diam. 6J mm.) 



Sub-Genus Sitala, H. Ad. 



Nanina (Sitala) attegia, Bens. 



Helix attegia, Bens., Ann. and Mag. Nat. Hist., 1859, ser. 3, vol. iii, p. 184; Con. Indica, pi. Ixxxvi, 



Nanina [Sitala) attegia, Nevill, l. c, p. 17. 



This species was found at Prome and Bhamo ; the Indian Museum also pos- 

 sesses specimens from Moulmein, Assam, and Preparis Island. 



Nanina diplodon, Bens. 



Helix diplodon, Bens., Ann. and Mag. Nat. Hist., 1859, ser. 3, vol. iii, p. 187 ; Con. Indica, pi. Ix, 



fig. S. 

 Nanina diplodon, Nevill, ^. c, p. 17. 



A few specimens were found in the 2nd Defile below Bham6 and also at Ponsee 

 in Yunnan. The outer tooth of the aperture varies slightly in shape. This species 

 seems to be alhed to the Sesara group. 



Sub-Genus Microcystis, Beck. 

 Nanina (Microcystis) barakporensis, Pfr. 



Helix barakporensis, Pfr., Proc. Zool. Soc, 1852, p. 156 ; Con. Indica, pi. Ixxxvii, fig. 7. 

 Nanina {Kaliella) harakporensis, (Pfr.) Stol., Journ. As. Soc, Bengal, vol. xlii, 1873, p. 20, 

 Nanina {Microcystis) harakporensis, Nevill, I, c, p. 17. 



A single specimen only was found at Bham6. The differences between the 

 sub-genera Kaliella and Microcystis appear to be not yet sufficiently characterized. 



