J884,} Notes on some Indian and' Burmese Helicidw. 



247 



mo valde eapaci, rotundato. Apertura circulari. Peristomate expanso, 

 reflexiusculo, valde incrassato, eontinuo, intus flavo, interdum cserur 

 lescente. Apice pallide purpurascente-rubicundula. 



Long. 52, Lat. 39, Alt. 37 mills. Apertura 29 mills. 



Habitat in collibus nemorosis eireum fontes fluminis Pegu dicii. 

 A very solid shell with the surface rarely in good condition and rather 

 sparsely distributed. It is barely so globose as C.Jlavilabris,.Ii. to 

 which it is nearly allied r and from which it differs in sculpture ? form 

 and greater solidity. 



With respect to O. patens ,. Bl. I find myself unable to regard it as a 

 distinct species or even race, but merely as an individual variety of Q. 

 fulguratus, Pf. as I have no where observed it sufficiently numerous 

 to be viewed in any other light. Another marked variety of fitl- 

 guratus also occurs with a large thin shell and white or cserulescent 

 peristome, in some places not rarely : but it is clearly an individual 

 variety of the predominant form. Both these varieties are good illustra- 

 tions of how races originate, and [become ?] eventually what most 

 systematists would regard as distinct species ; not as some would argue, 

 by change effected by migration, or enforced to meet changed condi- 

 tions of good climate or the like, but by individual aberration, and 

 the cotemporaneous up-growth of aberrant individuals into races and 

 eventually species, as the Darwinian most correctly asserts : but not 

 as far as I can see by any pressure of physical conditions co -relatively, 

 as the Darwinian theory no less incorrectly argues. Some other prin- 

 ciple, than of mere dependance on physical conditions, has yet to be 

 discovered, before the problem of what governs variation, or in other 

 words the " origin of species" can be regarded as satisfactorily solved. 



Pupiista Blaneobdi, Th. 



Testa pupin^eformi, politissima, flavescente-eornea. Anfractibus 

 quinque. Peristomate albo, non expanse Ganalibus albis. Long, 

 6, Diam 3.5 mills. Habitat, Pegu. 



This species was forwarded to me by Mr. W. T. Blanford as a pos- 

 sible variety of P. Peguensis y B. It is intermediate in its characters 

 and aspect, between P. Peguensis, B. and P. artata, B., to the latter of 

 which it more closely approaches in the shape and unreflected form of 

 its peristome. Whilst in fact P. Blanfordi ranks naturally as a near 

 ally of P. artata, B,, P. Peguensis, B. holds a similar relation to P. 

 anda, B, and it is questionable if all four species will not prove to be 



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