Zoological Society. 229 



peristomate interrttpto ; labio intertio expanse, lubio avterno cx- 

 panso, subrecurvo, scepihs subconstricto ; umbilico subobsoleto. 

 Var. a. Subgracilis, anfractibus 7 subventricosis, ultimo vix subven- 

 tricosiori ; puUide castanea vel brunnescens strigis longitudinali- 

 bus, irregularibus sordidl Jfavis picta ; aperturd ifitus subalbiddj 

 labio 7iigro-purpurascente. 



This variety is curiously marked. In the young shells the co- 

 lours are more pure and distinct, but as the animal becomes aged 

 they are more confused, and run into each other. In both states 

 tbe upper whorls are transparent, and the two last opaque. 



Var. b. Pcdlidior, labio hand constricto, ex albido dilute purpu- 



rascente. 

 Hab. ad Puerto Galero, 

 Xiegit H. Cuming in sylvis. 



The distortion and a shade of the constriction may be traced in 

 the mouth of this variety. 



Var. a. et b. habitant ad Puerto Galero. 

 Legit H. Cuming in sylvis. 



Var. c. subfiava, anfractibus ventricosioribus, fascia suturali albidd 

 et siibpurpured tessellatd ; aperturd ampld, albcl, labii margine 

 castaneo-purpiirascente . 



The shells of this variety are much less thick than those of the 

 two first, and are nearly transparent throughout ; but it must be re- 

 membered that all which I have seen of this variety ajipear to be 

 younger shells : the body- whorl is also much more ventricose in pro« 

 portion. 



Var. d. Tata flavescens, labio atbo. 



This variety, as well as the last, when held against the light, 

 shows shadings of the longitudinal stripes. 



Var. c. et d. habitant ad Mansalai. 



Legit H. Cuming in sylvis. 



*^* Bulinus chrysalidiformis of G. B. Sowerby (Zool. Proc. 1833, 

 p. 37) is a faded shell of var. c. or d. It is without epidermis, and 

 entirely white, except the margin of the lip, which is brownish. The 

 length of this species varies from 2|ths inches to 2§ths, and the 

 breadth from l|^ths to l^th. 



" The shells which I have here attemjjted to describe were collect- 

 ed by Mr. Cuming in deep and dark forests of thick foliage, some 

 upon, and others beneath, the leaves of trees. There w^ere no palms 

 in these forests. 



" I cannot quit this group without acknowledging that I am not 

 without doubts as to the specific difference of Bui. chrysalidiformis 

 and Bui. Mindoroensis. If the shells at the greater intervals be 

 taken, they appear to be distinct, but there are gradations in these 

 numerous and motley Mindoro snails, that at least closely approx- 

 imate the two sections into which I have divided them." — W. J. B. 



Mr. Cuming exhibited the various species and varieties of shells 

 described in the foregoing paper, and also a series to illustrate the 



