§2 
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. 
6. 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 Lucon, H. Cuming, Esq. 
CyYcLOSTOMA 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 
keeled. It is found under decayed leaves in the province of Taya- 
bas, island of Lugon. 
c. Shell of a light brown colour, variously mottled with very 
dark brown. Found under decayed leaves in dense woods at Cat- 
balonga, and at Basay, in the island of Samar. 
d. Smaller than the last, and generally paler in colour, with less 
of the dark brown. Found under decayed leaves at Cagayan in 
the province of Misamis, Island of Mindanao. 
Cyctostoma STAINFORTHII. 
Cycl. testd tenui, albicante, pyramidali, carinatd ; spirdé acuminati- 
usculd, anfractibus quinque ad sex, lateribus subventricosis, ultimo 
longe maximo, margine mediano carinato, lineis spiralibus fuscis 
quatuor ad sex ornato; suturd subobsoletd ; aperturd magna, sub- 
orbiculari, latere columellari rectiusculo ; peritremate albo, subin- 
crassato, reflexo, supra anfractum penultimum subinterrupto, um- 
