NERBUDDA DISTRICT. 211 



Journal of the Asiatic Society of Bengal, described their mode of 

 occurrence, and the position in which they lay. 



These trees, now silicified, were stated to be found on a limestone bed, 

 mixed up with the debris of trap rocks. He notices prominently the 

 peculiar fact that these remains were silicified, while in a calcareous 

 deposit, inferring from this that the bed on which they now lay could 

 not have been the place of their growth ; but at the same time forcibly 

 argues against their having been transported from any distance ; seeino- 

 that all the thin tendrils were still attached to the thicker parts of the 



Palddina. 



1. Paludina Phisdarensis (n s.) globose, imperforate, of 5 whorls, and having much 



the general aspect of the recent P. Melanostoma 0*60 — 0*45 — Casts, presented by 

 Rev. S. Hislop. 



2. Paludina Deccanensis, — Normal form as described by Sowerby from Nagpur and Gujri. 



3. Paludina decipiens (n. s.) This little species is very common at Gwalior and Pulsagur. 



A single specimen of a very similar shell has been received from Takli. A fine 

 specimen from Pulsagur of 5 whorls, measures 0.24 — 0.15. 



4. Paludina princeps (n. s.) shell larger and more elevated than P. Phisdarensis, whorls 



— 0.67 — 0.40. A few specimens obtained from near Gujri. ? Valvata. 



5. Paludina informis (n- s.) A small species rather variable in size. The whorls 



increase rapidly, but the largest specimens are imperfect. 

 The largest specimen measures 0.24 — 0.15. 



6. Paludina (rubicunduld) (n. s.) elongate, imperforate, upper whorls in some cases 



decollated; whorls 7 (?) —0.52—0.27 from Takli. 

 Valvata. 



1. Valvata Butarensis (n. s.) This species is closely allied to Paludina Deccanensis, 



not uncommon at Butara ; a large specimen of 6 whorls, measures 0.45—0,35. 



2. Valvata planorbis, (n. s.) A very minute shell of depressed discoidal form, common 



at Gujri ; also received from Butara : diam. 0.05 



3. Valvata minutissima (n. s.) A globose turbinate species finely striated spirally ; diam 



0.04. Gujri. 



LTMN.EA: 



1. Lymnaa subulata. Sow. Common and widely diffused both in the Nerbudda and 

 Nagpur. A fine specimen with 6 whorls, with the shell preserved, from near 



