1858.] Notes on some Indian Freshwater Shells. 319 



19. H. Climacteriea, B. — Teria ghat. Not rare. A dwarf varie- 

 ty occurs at Cherra. 



20. H. Cestus, B.— Beneath Cherra. Not very common. 



21. H. Decussata, B. — Teria ghat, rare. 

 22 * H. Bascunda, B.— Teria ghat, rare. 

 23.* H. Galea, B.— Teria ghat, rare. 

 24.* H. Diplodon, B.— Teria ghat, rare. 



25.* H. Castra, B. — Teria ghat, rare. A Darjiling species. 



26. H. Planiuscula, Hutton. — Cherra, rare. 



27.* H. Puellida, B. — Teria ghat, rare. 



28. H. Oxytes, B. — Nanclai poonji,* rather common among lime- 

 stone rocks. 



29.* -ST. Castor, n. s. mihi. — Testa lenticulari, subdepressa, vix um- 

 bilicata, acute carinata, confertim striata ferrugine — fusca anfractibus 

 5| — 6, magnitudinis 1.40 — 0.60. Habitat apud Nanclai, in moutibus 

 "Khasia" dictis. 



This shell is not common, and I have only a barely adult specimen 

 in good condition. It closely resembles H. oxytes which it accom- 

 panies, and from which it differs in its nearly closed umbilicus, and 

 less ornate sculpture. The keel too is a trifle more acute and 

 divides the body whorl in a symmetrical manner, from the shell not 

 being so flattened down as H. oxytes. The shell is rather stout 

 and the peristome probably thickened more or less. 



30.* H. Pollux, n. s. — Testa lenticulari, subdepressa vix umbi- 

 licata, acute carinata, tenue striata, translucente, colore stramiueo^ 

 polita, peristomate acuto anpactibus 5| — 6, magnitudini 1.40 — 0.55. 

 Habitat prope Teria ghat, ad pedem montium Khasia dictarum. 



This shell is a very distinct species of the same form as the above, 

 from which it differs in sculpture, want of solidity and colour. As 

 far too as I can judge, its habits are arboreal, whilst the last species 

 affects rocks in company with H. oxytes. 



A few more helices occurred, of the naninoid type, but not in a 

 satisfactory state for determination, but the hills below the Cherra 

 plateau offer a tempting ground for future exploration as the rich- 

 ness of the few spots examined near Teria ghat proves. 



* Poonji = village. 



2 t 2 



