1859.] HISLOP FOSSIL SHELLS OF NAGriJR. 173 



In closing my observations on the genus Limncea, I cannot avoid 

 calling attention to the unusual form which, for the most part, it 

 assumed in India at the period of our intertrappean formation. Of 

 several hundred specimens which I have discovered, only three have 

 been found of the inflated type so common at the present day. All 

 the others have belonged to species remarkable for the number and 

 slenderness of their volutions. It may be supposed that, with such 

 a form, they ought to be referred to some other genus (e.g., Achatina 

 or Glandina, and Ccecilianella) ; and certainly our L. spina and L. 

 Telanlchediensis in both its varieties remind ns of such a group of 

 Achatincv as is represented by A. balanus, A. subulata, and A. soli- 

 dida, or of CaicilianeUa as comprehends C. Qratelov/pi, C. nyctelia, and 

 V. nanodea; but I do not see, if the larger species of these slender 

 shells are to be classed with the L. gracilis of Say, how the smaller 

 can be separated. They have the same form of spire and aperture, 

 and the same kind of striation, whereas the groups of land shells 

 above alluded to are distinguished by the general smoothness or, 

 even, polish of their surface. But the argument which weighs most 

 with me, is that it is not conceivable that the remains of any terres- 

 trial genus of mollusc should be found so abundantly and widely in 

 our deposit as these shells arc. 



It is not easy to point out strata where a similar series of fossils 

 may be met with. In a paper on the (Jcology of Billy la Mon- 

 tague*, which was brought to my notice by my friend Dr. Oldham, 

 I)e Boissy describes several species of univalves under the generic 

 name of Achatiaa. Onr L. attenuata strikingly resembles his A. 

 Rillyensis when the latter is a right-handed shell; and others of 

 OUT species have an affinity to others of his in the same condition; 

 but none of ours have any tendency to a sinistral direction of the 

 spire. Whether, with this important difference, the fossils from the 

 two localities belong to the same genus, it is not for me to offer an 

 opinion. 



Puysa Prixsepii, J. Sowerby, Trans. Gcol. 8oc. vol. v. pi, -17. 

 tigs. L4-16. 



This species was established by Sowerby from specimens found by 

 Malcolmson, at Chikni in the province of Nagpur, and one or two 

 ities in the Eyderabad territories. As they do not seem to have 

 beep either numerous or in good condition, I shall take the liberty of 

 submitting another description from the ampler materials at dtj com- 

 mand. All may be arranged under three forms, the first of which I 

 would regard as the type of the species, and the other two as rarie- 

 tii - on the opposite extremes. 



Puysa l'lMNsnn (normdUt), PL V. fig. 23a. 



!: U-st.'i ingento, ovata, t'lc^antor striata, spira sat longa; aiifrai-tilui-* 7 s . 0OH- 



TOPSi Baton unprasM Mparatu, ultima spin plsoa dnplo majon ; tpertura 

 "\,ito-oblongn, Buperno angulata ; oolumellft inoi'n— f ■> Long. 2*75; Lit I 66 

 uno. 



* MOm. Soc. li. '•■!. BnnOSj - ■- r. VOL iii- 



