468 Zoological Society, 



ving the inside of the aperture of an orange-brown. Found under 

 decayed leaves on Mount Isarog, with var. a. 



h. Similar to var. e, but altogether paler, and from the same 

 locality. 



Cyclostoma canal i fe rum. 



Icon. Sowerby, Species Conchyliorum, Pars 2 da , Cyclostoma, f. 195, 

 196. 



Cycl. tesld orbicularis subdepressd, crassiusculd, albicante, brunneo- 

 marmoratd, spird depressd, obtusd; anfractibus quatuor, rotun- 

 datis, spiraliter striatis et superne carinifcris, prope suturam 

 brunneo albidoque articulatis et cingulo centrali brunneo ornatis ; 

 suturd canaliculatd, margine canalis elevato ; aperturd circulari, 

 peritremate incrassato, reflexo, umbilicum patulum versus lamelloso- 

 patente. Long. 0*8; lat. 1*4 poll. Operculum corneum, anfrac- 

 tuum margine lamellari, levatiusculo. 

 This species bears a general resemblance to the last ; it may be 

 distinguished by the flexuose lamella proceeding from the peritreme 

 and overlying the umbilicus, so as nearly to cover it when adult ; and 

 also by the narrow channel at the suture. I received the first spe- 

 cimens of this shell from J. K. Smith, Esq. Mr. Cuming has col- 

 lected two different varieties. 



a. Shell depressed, pale in colour, J. K. Smith, Esq. 



b. Shell with a more prominent spire and much darker colours. 

 Found under decayed leaves on the island of Burias, H. Cuming, Esq. 



c. Shell with the spire prominent as the last; of a rich dark 

 brown, with a white median line and angular flashes of white on 

 the upper side. Found under decayed leaves in the province of 

 Tayabas, island of Luc,on, H. Cuming, Esq. 



Cyclostoma validum. 



Cycl. testd orbiculari, crassiusculd, pallidd, brunneo-variegatd, spird 

 elevatiusculd, anfractibus quinque rotundatis, spiraliter striatis, 

 et nonnunquam obtuse quatuor- ad quinque-carinatis ; suturd 

 distinctd ; aperturd circulari, peritremate incrassato, reflexo, 

 umbilicum versus patente ; umbilico mediocri. Long. 1*5; lat. 

 1*8 poll. Operculum corneum, tenuiculum, margine anfractuum 

 lamellari. 

 The young shell of this species appears to have been of compara- 

 tively large size at its first development from the egg, the edge of 

 its aperture being usually distinguished by a broad and dark brown 

 oblique band at about the middle of the third volution from the apex. 

 Mr. Cuming has brought several varieties, as follows : — 



a. This is the largest and coarsest variety, and its colours are the 

 least brilliant ; the lower part, near to the aperture, appears to be 

 constantly worn away, probably from age ; the peritreme also is ex- 

 tended far beyond its first formed edge. It is found on the leaves 

 of trees at Tanauan, in the island of Leyte. 



b. Shell of a dark brown, with sometimes angular flashes of nearly 

 white over the upper part of the shell ; the median edge is obtusely 



