338 Zoological Society. 



disposed in irregular and interrupted lines, nearly following the di 

 rection of the lines of growth, but increasing in width so as to form 

 an interrupted band at the circumference of the shell. Found on 

 the leaves of small trees on the island of Capul. 



/. Shell pale brownish yellow, with the white external epidermis 

 similarly disposed, but forming two rather broader and less inter- 

 rupted bands, one at the circumference and the other anterior. 

 From the same locality. 



g. Shell w^hite, with alternating light and dark brown bands ; 

 antesutural line and band round the columella dark brown. From 

 Ligao, South Camarenis, island of Luzon : found on the leaves of trees. 



h. Similar to g, but the alternating bands are dark brown and 

 black ; the antesutural line and the band round the columella also 

 are black. From Pasacao, South Camarenis : found on the leaves 

 of trees. 



i. Similar to the last, only destitute of the central brown band. 

 From the same locality as h. 



k. Shell white, with three brown bands ; antesutural line and 

 columellar band of the same colour. From Ligao. 



/. Shell white, with two brown bands ; antesutural line and colu- 

 mellar band of the same colour. From Ligao. 



m. Shell white, with a single brown band at its circumference. 

 From Ligao. 



n. Shell white, with alternately very pale and dark brown bands ; 

 antesutural line and columellar band dark brown. From Ligao. 



o. Shell verj' pak brown, with a very thin epidermis ; two dark 

 brown bands, the one before and the other behind the light brown 

 circumferential band ; antesutural line and columellar band dark 

 brown. From Ligao. 



p. Shell totally white. Also from Ligao. 



Helix opalinus. Hel. testa pyramidalis, conica, obtusa, hyalina, 

 tenuis, albido-viridescens , lavis, nitida, striis incrementi tenuissi- 

 mis solum sculpta ; anfractibus senis, subconvexis, ultimo antice 

 obtuse siibcarinato ; suturd distinctd, antice lined ulbd angustis- 

 simd ; aperlurd obliqud, subrotundatd, superne basi ultimi an- 

 fractus fere pland modificatd ; peritremate subreflexo, prope colu- 

 mellam subincrassato ; columelld albd, subincurvd, sulco subobso- 

 leto circumdatd. 

 Long. 1-25, lat. 0-8. 



Hab. supra folia fruticum prope St. Jaun, Provinciam Cagayan 

 Insulse Luzonicse. 



A remarkably delicate species, having nearly the form of Helix 

 pileus ; it is, however, narrower in proportion to its height, its vo- 

 lutions are less numerous, and rather more convex. This elegant 

 species has the usual colour and semitransparency of the Semi-Opal, 

 which, however, becomes rather greener towards the base. 



Helix cincinnus. Hel. testa ovato-pyramidalis, tenuis, Itevis, pie- 

 rhmque nitida, subhyalina ; epidertnide albo fuscoque varid, haud 

 nitidd nonnunquam induta ; spird elatiusculd, obtusd ; anfracti- 



