4f)2 MR. HARPER PEASE ON POLYNESIAN LAND-SHELLS. [May 2, 



longitudinaliter flexuose forte costata, rufescens ; anfr. 4, rotun- 

 dato-convexi, ultimus concentrice valde bisulcatus, basi com- 

 pressus ; apex obtusus ; sutura valde impressa ; apertura campa- 

 nulata, basi rotundata, lamellis 4 munita, in pariete aperturali 2, 

 primo cum labro continuo, secundo mediano, intrante, in margine 

 basali 1, labiali postice 1, labro flexuoso ; peristoma tenue, mar- 

 ginibus disjunct is. 



Alt. 2, diam. 1 mill. 



Hub. Insula Hawaii. 



Vertigo perlonga, Pse. 



T. elongata, cylindrica, rimato-perforata, dextrorsa, pallide stra- 

 minea, longitudinaliter Jilo-costata, costis obliquis, rcmotis, flex- 

 uosis ; spira obtusa ; sutura impressa ; anfr. 5, planulati, ultimus 

 medio concentrice sulcatus, prope basin indebitatus ; basi com- 

 pressus, circa umbilicum rotundato-angulatus ; apertura subqua- 

 drangularis, vix porrecta, basi contractu, rotundata, postice bila- 

 mellata, labro superne sinuoso, unilamellata ; peristoma continuum 

 vix ever sum. 



Alt. 2|, diam. 1 mill. 



Hab. Insula Oahu. 



Vertigo dentifera, Pse. 



T. cylindrica, solidiuscula, perforata, dextrorsa, longitudinaliter 

 oblique tenuissime striata, rufo- aut fluvo-castanea ; anfr. 4, con- 

 vexo-rotundati, ultimus prope labrum brevi-bisulcatus ; apertura 

 fere circularis, postice biplicata, columella uniplicata, basi tri- 

 vel quadridentata, labro vix reflexo ; peristoma crassiusculum, 

 non continuum. 



Alt. If, diam. 1 mill. 



Hab. Insula Eoratonga. 



Vertigo costulosa, Pse. 



T. obtuso-ovata, interdum fere globosa, tenuis, perforata, dextrorsa, 

 vix nitida, oblique et sparsim filo-costata; anfr. 4, rotundato- 

 convexi, tumidi, ultimus prope labrum, interdum brevi-bisulcatus ; 

 apex obtusus ; sutura valde impressa ,- apertura fere circularis, 

 dentibus 5-6 coarctata, in pariete aperturali 2, primo juxta 

 labrum, secundo maxima, prominente, lamelliformi, intrante, in 

 margine columellari 1 , in marginibus basali et exlerno, 2-3 pro- 

 funda sitis ; peristoma subreflexum, crassiusculum, marginibus 

 plerumque callo junctis ; rufo- vel flavo-cornea. 



Alt. If, diam. 1 mill. 



Hab. Insula Hawaii. 



Vertigo bacca, Pse. 



T. cylindracea, abbreviata, tenuiuscula, dextrorsa, perforata, Icevi- 

 gata ; apex obtusus; anfr. 4, rotundati, ultimus concentrice bisul- 

 catus; apertura fere circularis; in pariete aperturali bilamellata, 

 columella unidentata ; labrum vix eversum ; pallide fusca. 



Hab. Kalapana, Insula Hawaii. 



