416 Mr. E. A. Smith on 



Adelomorpha Canefriana, (PI. IX. figs. 17, 18.) 



Testa turbinata, anguste umbilicata, pallide rufescens, tenuissirae 

 spiraliter striata ; anfractus 5, perconvexi, ultimus rotundatus, 

 antice vix descendens ; apertura subcircularis, intus dilute ru- 

 fescens ; peristoma simplex, tenue, baud expansum, pallidum, 

 margine columellari obliquo, fere rectilineare, leviter incrassato, 

 superiore prope suturam prominente. Operculum calcareum, extus 

 valde concavum, album, anfractibus 5, utrinque carinatis, trans- 

 versim fortiter striatis, sutura canaliculata sejunctis, infra luteum, 

 lineis numerosis tenuibus, curvatis, radiantibus, griseis ornatum, 

 margine externo trisulcato et carinato. 



Diam. maj. 7| millim., min. 6 ; alt. 8. 



Ilah. Kapaur. 



Larger and more globose than A. tumcata, Canefri, and 

 also readily distinguishable by its remarkable operculum. 



Adelomorpha glohosa. (PI. IX. fig. 19.) 



Testa tnrbinato-globosa, auguste umbilicata, sordide lutescens, 

 spiraliter tenuissirae striata ; anfractus 5, perconvexi, sutura 

 profunda sejuucti, ultimus globulosus, antice vix descendens ; 

 apertura subcircularis ; peristoma tenue, simplex, acutura, palli- 

 dum, margine columellari subincrassato, vix reflexo. Operculum 

 calcareum, album, extus concavum, anfractibus quinque lineis 

 increment! tenuissimis striatis. 



Diam. maj. 5 millim., min. 4| ; alt. 4|. 



Ilah. Kapaur. 



It differs from A. Canefriana in its smaller size, less 

 elevated spire, deeper suture and operculum. A. tunicata 

 appears to have a similar operculum, but the shell is very 

 different in form. 



Ditropopsis papuana, gen. et sp. n. 

 (PI. IX. figs. 20-23.) 



Testa depressa, orbicularis, carinata, lato et perspective umbilicata, 

 olivaceo-cornea, uitens, semipellucida ; spira couvexa, depressa ; 

 anfractus normales 3|, convcxiusculi, ad suturam carino-margiuati, 

 ultimus baud descendens, ad medium et circum umbilicum carina 

 acuta, dcfinita, valde jiromiiionte, pallida instructus ; umbilicus 

 infundibuliformis, spiraliter liratus et carinatus, epidermide 

 tenui, striata, indutus ; apertura irregulariter pentagona, parva ; 

 peristoma leviter incrassatum et expansum, intus ad carinas 

 canaliculatum, baud continuum, marginibus callo touuissimo 

 junctis. Operculum corneum, circularc, extus rufo-fuscum, 



