rUE NAUTILUS. 65 



Heniiplecta oleata Anc. 



Testa globoso-depressa, tenuis, anguste perforata, oleoso-nitens, 

 supra tenuissime et irregulariter granulata ; subtus magis nitida, 

 lineis radiantibus incrementi notata et sub valida lente striolis spi- 

 ralibus undulatis valde confertis cincta, superne fusca, ad peri- 

 pheriam zonula pallida cingulata, infra peripheriam intense castanca, 

 denique basi pallidior. Spira convexa, obtusa. Anfractus 5 con- 

 vexiusculi, regulariter crescentes, sutura appressa nee profunda 

 divisi, ultimus amplus, vix rotundato-angulatus, basi convexus. 

 Apertura subobliqua, lunata, marginibus distantibus, callo nitido 

 tenuique junctis, supero convexo-declivi, basali regulariter arcuato^ 

 columellari anguste in trianguli forma expanso, subincrassato. 

 Peristoma acutum, rectum. 



Diam. maj. 37, min. 30^, alt. 23, alt. apert. oblique 17^ mill. 



Hab.: Antsianaka Country (E. Perrot). 



Very distinct from Hemiplecta Bahtoni, Angas, H. Oleamesi, E. 

 A. Smith, and H.formosa, Anc, all also from Madagascar. 

 Hemiplecta profuga Anc. 



Testa depressa vel subgloboso-depressa, tenuis, perforata, nitida, 

 supra subsericea, luteo-cornea, infra angulum medianum zona fusca 

 angustaque cingulata. Spira plus minusve convexa, conoideo- 

 depressa, obtusa. Anfractus b-b\ convexiusculi, regulariter ties- 

 centes, obliq-ue obsoleteque lineis incrementi confertis vix sculpti, 

 supra passim et inconspicue subgranulati, sutura parum profunda 

 discreti, ultimus ante medium angulo ad aperturam paulatim evan- 

 escente aut subrotundata cinctus, basi convexior. Apertura sub- 

 obliqua, lunata, transverse irregulariter oblonga, extus subangulata, 

 marginibus remotis, basali antiee subsinuato, columellari in trianguli 

 forma supra perforationem circularem et minutam anguste dilatato, 



Diam. maj. 22, min. 18^, alt. apert. oblique 8 mill. 



Hab.: Antankaratra, N. Madagascar (Humblot). 



This is allied to H. oleata, but is much smaller, more depressed 

 and of lighter color. The sculpture also is more obsolete. 

 Macrochlamys granosculpta Anc. 



Testa perforata (perforatio parva, sed aperta, circularis), tenuis 

 depressa, oleoso-micans, sordide luteo-cornea, vix lineis incrementi 

 notata, striis confertissimis spiralibus passim, sed ad suturam 

 prajsertim, granulosis decussata, apice laevi. Spira depresso-sub- 



