DA COSTA : NEW MOLLUSCA FROM S. AMERICA, ETC. 99 



strongly striated. The different geographical distribution of the 

 two species should be sufficient to distinguish them. The shelly 

 operculum is thick and consists of 8-9 whorls, which are thickened 

 at the inner edge. 



CURVELLA MINUTA, U.Sp. PL XI, FigS. 12-14. 



Testa oblongo-ovata, umbilicata, curvatim rugulose-striata, tenuis, 

 cretacea, alba ; anfractus 5i, convexi, ultimus f longitudinis sequans ; 

 apertura semi-ovalis ; peristoma simplex, margine dextro arcuato, 

 supra recedente, columellari recto, dilatato et reflexo. Long. 7 "5, 

 diam. 4"5mm. ; apertura 5 mm. longa, 2-5 lata. 



Hab. — Malbato, Busuanga I., Philippines. 



These little shells formed part of Dr. Hungerford's collection, 

 purchased many years ago by the writer, and were labelled " Stemgyra 

 sp.," but from their peculiar sculpture they belong to the genus 

 Curvella, formerly named Uapalus. 



CuRVELLA ALABASTRINA, n.Sp. PI. XI, FigS. 10-11. 



Testa oblongo-ovata, umbilicata, tenuis, nitida, curvatim rugulose- 

 striata, pellucide albida ; anfractus 6, convexiusculi, ultimus f longi- 

 tudinis aequans ; apertura ovalis ; peristoma simplex, margine dextro 

 arcuato, columellari recto, leviter recedente dilatato et reflexo. 

 Long. 17, diam. 9 mm. ; apertura 9 mm. longa, 4*5 lata. 



Hah. — Guimaras, Philippines. 



From the same collection as the preceding species. 



EXPLANATION OF PLATE XI. 



Fig. 1. Goniostonms subhyhridus, n.sp. 

 2, 3. BrymcBHs spadiceus, n.sp. 



4. ,, alabastriuus, n.sp. 



5. ,, castaneu-strigattts, n.sp. 



6. ,, Rosenbergi, n.sp. 

 7-9. Neoeyclotus Peruviantis, n.sp. 

 10, 11. Curvella alabastrina, n.sp. 

 12-14. Curvella minuta, n.sj). 



