39 



lineari, albo-margitiatd ; anfractibus 4 planiusculis, ultimo obiuse 

 angulato ; columelld obligvd, margine granulosd ; aperturd dilatatd, 

 lunari ; peristomate nigro, subincrassato, parum expanso. 



Diam. 19^; altit. \2\ lin. 



From the island of Marinduąue : found on leaves of trees. (Cu- 

 ming.) 



lutermedia inter Hel. Valenciennesii et virginem. 



Helix coNSTRiCTA, Pfr. Hel. T. imperforatd, semiglobosd, nitidd, 

 concentrice minutissime striatd, flavo-albidd, fasciis 2fuscis inter- 

 ruptis ad peripheriam ornatd; anfractibus 4į conveziusculis, ul- 

 timo basi subplanato, ad aperturam subith descendente, constricto ; 

 aperturd lunari, intus nitide flavd ; peristomate acuto, albo, late 

 reflexo, margine basali subincrassato ; ared columellari callosd, 

 subexcavatd. 



Diam. llį; altit. 6^ lin. 



From Calapan, island of Mindoro : found on leaves of trees. (Cu- 

 ming.) Affinis sequenti. 



Helix paradoxa, Pfr. Hel. T. imperforatd, globoso-depressd, 

 nitidd, concentrici subtilissime et confertissime striatd, virescenti- 

 Jlavd, apice nigro-violaceo, ared basali saturate castaned ; anfrac- 

 tibus 5 planiusculis, ultimo irregulari, lateraliter subcompresso, 

 prope aperturam tumido ; aperturd lunari-ellipticd ; peristomate 

 albo, acuto, late reJlexo, margine superiore intus callo castaneo mu- 

 nito, basi in dentem horizontalėm incrassato. 



Diam. long. 12į; transv. 10 ; altit. 7 lin. 



From Sorsogon, province of Albay, isle of Luzon : found on leaves 

 of trees. (Cuming.) 



Afiinis H. Thersit., margine non carinato, colore et sculptura di- 

 versa. 



Helix fodiens, Pfr. Hel. T. umbilicatd, subglobosd, tenui, dia- 

 phand, rufo-corned, obliqui confertim rugosd; anfractibus 5^ con- 

 vexis, ultimo subangulato ; umbilico pervio ; aperturd suborbicu- 

 lari ; peristomate simplice, ad umbilicum late expanso. 

 Diam. U ; altit. 7 5 lin. 



From Banguey, province of North llocos, isle of Luzon : found 

 partially buried in earth, uader stones. (Cuming.) 



/3. Minor, pallidior, anfractibus 5, diam. 9^, altit. 6 lin. 

 From Cagayan, isle of Luzon. (Cuming.) 



DifFert ab H. frutico tęsti rugosa et apertura magis dilatata, ab 

 H. tourannensi rugis testae, spira non acuminata, et peristomate intus 

 non labiato. 



Helix succinea, Pfr. Hel. T. depressd, obsolete subperforatd, 

 tenui, pellucidd, nitidd, succined ; suturd mediocri ; anfractibtis 5 

 celeriter crescentibus, vix convexiusculis ; aperturd lunari ; peri- 

 stomate simplice, acuto, margine columellari subreflexo, perfora- 

 tionem obsoletam tegente. 



Diam. 5 ; altit. 3 lin. 



