Zoological Society, 293 



simplice, rectOy margine columellari ad umhilicum in laminam 



hreveniy triangularem rejlexo, 

 Diam. maj. 53, min. 45, alt. 30 mill. 

 Hab. in insula Borneo, var. pallida in insulis Philippinis. 



8. Helix borneensis, Pfr. H. testd ohliquh perforatdy de- 

 pressd, tenuiusculd, striis incrementi distinctis et lineis ohli- 

 quisy impressisy crebris decussatdy saturate fulvd ; spird via; ele- 

 vatd, obtusd ; anfractihus Aparum convexisy celeriter accrescen- 

 tibuSy ultimo medio zond nigricantey deorsum dilutdy ornato ; 

 suturd lined impressd marginatd ; aperturd oblicpidy ampldy 

 transverse lunari-ovali, intus margaritacedy fascid pellucente ; 

 peristomate simplice, acuto, margine columellari in laminam 

 brevemy triangularemy umbilicum semitegentemy rejlexo. 



Diam. maj. 52, min. 42, alt. 25 mill, 

 Hab. in insult Borneo. 



9. Helix africana, Pfr. H. testd perforatdy depressd, tenui, 

 nitidd, minutissimh striatuldy lineis confer tis, concentricis, im- 

 presses sub lente minutissime decussatdy rufo-fuscd vel pallide 

 corned ; spird brevissiine conoidedy apice subelevato ; suturd 

 submarginatd ; anfractibus 7 vix convexiusculis, sensim accres- 

 centibusy ultimo carinato (carind antice obsoletd)y non descen- 

 dentCy basi paulo convexiore ; aperturd depressdy laid, lunari ; 

 peristomate simplice, rectOy acutOy margine columellari supra 

 perforationem brevissimk rejlexo. 



Diam. maj. 26, min. 23, alt. 13 mill. 

 Hab. ad Axim in littore occidentali Africae. 



10. Helix sandvicensis, Pfr. H. testd umbUicatdy discoidedy 

 striatdy nitiduldy luteo-corned ; spird pland ; suturd impressd ; 

 anfractibus 5-6 lente accrescentibus, ultimo depressOy basi vix 

 convexiore ; umbilico lato, dimidium fere diametri occupante ; 

 aperturd parum obliqud, lunari-rotundatd ; peristomate sim- 

 plicCy rectOy tenuiy marginibus conniventibus. , \ 



Diam. maj. 18, min. 15, alt. 5 mill. 



Hab. in insulis Sandwich. '^' 



11. Helix Jacquinoti, Pfr. H. testd umbilicatdy fornicato- 

 conoidedy soliduldy acute carinatd, confertim arcuato-costatdy 

 albo et fusco variegatd ; spird conoidedy obtusd ; anfractibus 8 

 angustisy omnibus carinatis {carina exsertdy compressd, costis 

 decurrentibus denticulatd), ultimo basi vix convexiusculoy radia- 

 tim striato ; umbilico extus lamind horizontali coarctatOy intus 

 lato ; aperturd depressdy secvriformiy lamellis 6 intrantibus 

 munitd ; 2 in pariete aperturali elongatisy 1 columellari et 3 in 

 margine basali profundisy vix conspicuis ; peristomate simplice, 

 rectOy acutOy margine basali in lamellam umbilici introitum cir- 

 cumclaudentem continuato. 



Diam. maj. 9, min. 8^^, alt. 5 mill. 



Hab. in insula Tahiti, et in insulis Marquesas. 



12. Helix coarctata, Pfr. H. testd umbilicatd, depressd. 



