263 



52. Helix solida, Pfr. H. testa imperforatd, conoideo-semi- 

 globosd, crassd, striatd, fulvescente, epidermide tenui, fused, 

 non nitente obductd ; spird convexd, obtusd, apice rubelld; an- 

 fractibus 5, convexiusculis, ultimo convexiore, dimidium altitu- 



dinis formante, medio obsolete angulato, antich vix descendente ; 



columelld strictd, declivi, lata, albidd ; aperturd obliqud, sub- 



tetragono-lunari, intus albd ; peristomate subincrassato, vix 



expansiusculo, fusco-limbato. 

 Diam. maj. 37, min. 33, alt. 27 mill. 

 Hab. prope Nanjan, insulse Mindoro. 



53. Helix oblita, Pfr. H. testd perforata, sublenticulari, 

 tenuissimd, superne confertim arcuato-plicatd, pellucide, pal- 

 lid^ corned; spird depresso-turbinatd, acutiusculd ; anfracti- 

 bus 6, vix convexiusculis, ultimo non descendente, medio obtuse 

 denticulato-carinato, basi convexiore, radiatim striato ; aper- 

 turd parum obliqud, lunari ; peristomate simplice, tenui, recto, 

 margine basali leviter arcuato, ad perforationem breviter re- 

 jlexo. 



Diam. maj. 23, min. 20, alt. \\\ mill. 

 Hab. in India. 



54. Helix vilis, Pfr. H. testd umbilicatd, depresso-globosd, 

 tenuiusculd, granulato-striatd, corned ; spird breviter conoided, 

 acutiusculd; anfractibus 5, vix convexiusculis, celeriter accres- 

 centibus, ultimo antice deflexo, peripherid obsolete subangu- 

 lato, basi convexo ; umbilico angusto, non pervio ; aperturd 

 diagonali, fere circulari; peristomate intus valide labiato, 

 marginibus approximatis, columellari superne dilatato, pa- 

 tente. 



Diam. maj. 11, min. 9, alt. 6 mill. 

 Hab ? 



September 9, 1851. 



Sir Roderick Impey Murchison, G.C. St.S., F.R.S. &c., 

 in the Chair. 



Professor Owen read an elaborate paper " On the Skeleton of Tro- 

 glodytes Gorilla," which will be published in the Transactions of the 

 Society. 



