Zoological Society, 471 



angustd tenuique inter anfractum ultimum et partem posticam labii 

 positd ; umbilico parvo, carind obtusd marginato, hdcce carind 

 externam partem canalis angustissimce basis columellaris effor- 

 mante. Long. 0*7 ; lat. 0*25. 

 Hab. supra truncos arborum apud S. Juan provincise Cagayan in- 

 sula* Luc.on, Philippinarum. 



This species, which is related to the last and to Cycl. tortuosum of 

 Gray, approaches very nearly to the genus Pupina, appearing to 

 differ only in having a dull unpolished external surface, while that 

 of Pupina is extremely brilliant. It proves the genera Cyclostoma 

 and Pupina to belong to the same family. 



The next communication is from Dr. L. Pfeiffer, and contains the 

 following descriptions of shells belonging to the genera Helix and 

 Bulimus, also collected by H. Cuming, Esq. in the Philippine Islands. 



Helix zonifera, Sow. Hel. T. imperforatd, subglobosd, tenui, 

 fulvd, zonis variis opacis lutescenti-albidis ornatd, obsolete angu- 

 latd ; anfractibus 4 convexis, supremis depressis ; columelld pland, 

 redd, elongatd ; aperturd lunato-rotundatd, intus nitidd ; peristo- 

 mate simplici, expanso, albo, cum callo columellari angulaflmjuncto. 



Diam. 1'60; alt. 1- 10 poll. 



Hab. ins. Leyte. 



/3. T. tenuissimd, luteo-virente, basi unicolore, ad peripheriam fascid 

 latd nigricante et angustiore albidd, superne fasciis pluribus albidis 

 interruptis ornatd. 



Hab. ins. Leyte. 



y. T. rufo -nigricante, fasciis variis sordide albidis. 



Hab. ins. Samar. 



B. T. crassiusculd, cinnamomed, fasciis lutescenti-albidis. 



Hab. ins. Samar. 



Differt ab H.pulcherrimd, cui valde affinis, spira depressa, anfractu 

 ultimo minus inflate, et columella neque excavata neque dentata. 



Helix Norrisii, Sow. Hel. T. imperforatd, globoso-depressd, so- 

 lidd, glabrd, fulvo-citrind, zonis opacis candidis et infra suturam 

 maculis irregularibus albis notatd ; spird semiglobosd ; anfractibus 

 4^ convexis, ultimo ad columellam subexcavato ; columelld latd, 

 albo-callosd, arcuatim prolongatd ; aperturd fere orbiculari, intus 

 lacted ; peristomate crasso, latissime expanso. 



Diam. 1'80; alt. 1*15 poll. 



Hab. insula Lucon, ad Montem Triga. 



Species intermedia inter H. pulcherrimam et zoniferam, ab ilia 

 spira depressa et columella arcuata, ab altera columella excavata, nee 

 angulata. diversa. 



Helix luzonica, Sow. Hel. T. imperforatd, conico-globosd , cras- 

 siusculd, oblique striatd, rufd, apice sanguined, epidermide liberd 

 fere omnino tectd, medio fascid latd albidd ornato ; spird conoided ; 

 anfractibus 5 — b\ convexiusculis ; columelld obliqud, dilatatd, 

 tuberculosd ; aperturd lunato -orbiculari, intus lacted ; peristomate 

 incrassato, late reflexo, albo vel purpureo late limbato. 



