Zoological Society. 531 



Hab. ad insulam Negros, truncis arborum haerens. 

 Legit H. Cuming in sylvis. 



Helix (Carocolla) Siquijorensis. Car. testa subcomplanatd 

 anfractibus 4, lineis incrementi creberrime striata ; ultimo maximo, 

 acuto ; labii subreflexi limbo superiore haud deorsum depresso ; 

 fused, epidermide cinerascente coopertd. 

 Long. ^ ; lat. If poll. 



Hab. ad radices arborum et arbusculorum in insula Siquijor. 

 Legit H. Cuming in sylvis. 



The ash- coloured epidermis which covers this species, upon im- 

 mersion in water, disappears., to reappear when it is dry. When it 

 is wet the dark brown ground-colour is exposed. The shell varies 

 to a lighter whitish- brown hue. The sutural line is darker than the 

 general colour, and the lower surface of the expanded edge of the lip 

 is dark brown and shining in each variety. The termination of the 

 upper edge of the lip is on the same line with the edge of the body- 

 whorl. 



Helix (Carocolla) Thersites. Car. testa subcomplanatd, gibbd, 

 tenuissimd, hyalind, diaphand ; anfractibus 4, lineis incrementi cre- 

 berrime striatis, ultimo antice acuto, postice subito rotundato, gibbo ; 

 aperturd magnd ; labii antice reflexi limbo subrejlexo, flavescente ; 

 anfractibus suturam versus et medio castaneo-fasciatis ; nucleo 

 castaneo. 

 Long. \ ; 1| poll. 



Hab. ad Calopan in insula Mindoro, foliis arborum haerens. 

 Legit H. Cuming in sylvis. 



The deformed appearance of this species arises from the flattened 

 and sharp edge of the body- whorl suddenly becoming rounded at 

 about half way. The colouring is pretty, the chestnut bands show- 

 ing to advantage on the transparent amber- colour of the shell. The 

 young shell has no gibbosity. 



Var. a. Subdiaphana, fascia latissimd nigro-castaned ornata. 

 Hab. cum praecedente. 



This variety is more opake, and the broad, blackish, chestnut band 

 extends from the suture half-way down the whorls. The base of 

 the shell is broadly bifasciated with the same dark colours, the nar- 

 rowest band being nearest to the outside edge. The termination of 

 the lip in this species is on the same line with the body-whorl. — 

 W.J.B. 



The next paper read was by G. B. Sowerby, Esq. This also con- 

 sists of descriptions of Mr. Cuming's new species of shells. 



Helix modesta. Hel. testa acuminato-subovali, tenui, albicante, 

 fasciis spiralibus badiis modeste ornatd ; spird acuminatiusculd, 

 apice obtuso ; anfractibus 4\ subrotundatis, Itevibus, lineis incre- 

 menti tenerrime insculptis, ultimo maximo, ventricoso ; suturd di- 

 stinctd; apertures margine externo rotundato, interno superne an- 

 fractu penidtimo modificato; columellari recto, angulum efformante ; 

 peristomate paululum reflexo, badio ; columella recta, alba, subin- 

 crassatd. 



2 M 2 



