102 MB. B. A. SMITH ON liAND -SHELLS FROM [Feb. 5, 



leviter concavi, striis oblic/uis irregularibus tenuihvs lineisqve 

 incrementi oblique curvatis scidpti, ultimus magnus, supra et 

 infra carinam compressus, infra mediocriter convexus, obliqxie, 

 concentrice, tenuiter sed corritciato-stnatus ; apertura obliqua, 

 anc/iduio-lunata ; peristoma mediocriter validum, intus anguste 

 incrassatum, ad insertionem supra umbilicumbreviter expansum, 

 fuscescetis. 

 Diam. maj. 48 millim., min. 39, alt. 25. 

 Hab. Meri, Sarawak (C Base). 



A single specimen was collected at the above locality by 

 Mr. Hose, but a finer example, which may be regarded as the 

 type, was presented to the Museum a year or two ago by Dr. H. 

 Woodward. This fine species does not resemble any of the other 

 known Bornean forms, and is remarkable for the conical spire, the 

 acutely angled body-whorl, and the rapid increase of the volutions. 

 The fine oblique wrinkly striation is also a characteristic feature. 

 It is placed temporarily in Bemiplecta, for when the soft parts are 

 known it may prove to be a dextral form of Dyahia. 



6. HEsnPLECTA EGERiA. (Plate II. figs. 5, 6.) 



TeMa depressa, orbicidaris, carinaia, anguste umhilicata, fusca, 

 concolor, supra hand nitida, infra nitens ; spira dejiresse 

 conoid.alis, ad apieem obtusa ; anfractus 6, subjilani, lente 

 regidariter crescentes, lineis incrementi tenuibus striati, et 

 sup>ra minutissime corrugati vel si(br/ranulati, vltiwiis 

 subacute carinatus, infra carinam- convexiiisculus, nitidissimus, 

 lineis spircdibus microscopicis scidptus; ajjertura angvlaio-lunata, 

 ohlkpia ; peristoma tenue, margine cohnnellari obliquissimo, 

 sidyarcuato, ad insertionem supra utnhilicum breviter dilatato 

 et rejiexo, sublivido. 

 Diam, maj. 35 millim.^ min. 31, alt, 16. 

 Hab. South-west Palawan. 



The upper surface of this species is of a dull appearance, 

 resulting from the minute granulation or wrinkling. On the 

 contrary, the underside is very highly polished. It differs from 

 H. densa, var. everetti, not only in sculpture, but in the less rapid 

 increase of the whorls, the flatter spire, and narrower umbilicus. 

 The excessively fine concentric striae upon the lower surface are 

 particularly noticeable within the aperture, where the surface of the 

 whorl is dulled by a filmy deposit. It may be a dextral form of 

 Dgalcia. 



7. Hemiplecta eabongensis. (Plate II. fig. 9.) 



Testa depresse conica, anguste perforata, tenuis, cornea, apieem 

 versus fuscescens, supra haud nitida, infra sericata, ad peri- 

 pTieriam acute carinaia ; spira breviter conica, ad apieem 

 obtusa ; anfractus 7, vix convexiusculi, lente accrescentes, undique 

 minute granulati, lineisque incrementi obliquis scidpti, supra 

 suturam anguste marginati, ultimus infra medium conveodus- 

 cidus, minutissime corrugatus vel subgranulatv^ ; apertura 



