352 NESOPUP^E OF THE MASCARENE ISLANDS. 



Whorls 5, convex, the last obtusely angular around the um- 

 bilical crevice, narrower and bisulcate behind the aperture. 

 Aperture truncate-oval, vertical, with two parietal lamellae, 

 the right-hand one prominent, left one remote. Peristome a 

 little expanded, the right margin sinuous, provided with two 

 entering folds. Length 1.5, diam. 0.75 mm. (H. Ad.). 



Mauritius: Bamboo (G. Nevill). 



Pupa (Pupilla) exigua H. ADAMS, Proc. Zool. Soc. Lond., 

 1868, p. 13, pi. 4, f. 4. Not Pupa exigua Say, 1822. 



Adams did not mention a columellar lamella, but it is seen 

 in his figure. The species is perhaps related to the preceding 

 or to the Continental bisulcata group. It is smaller and nar- 

 rower than N. gonioplax, with different sculpture. 



Section Insulipupa P. & C. 



Probably N. ventricosa H. Ad., which lacks palatal folds, 

 belongs to this group. In that case Insulipupa would include 

 the subgenus Pagodella? H. Adams, Proc. Zool. Soc. London, 

 1867, p. 304, monotype Pupa ventricosa H. Ad. ; not Pagodetta 

 Swainson, 1840. 



49. NESOPUPA MINUTALIS (Morelet). PL 33, figs. 1, 2, 3. 



Shell minute, rather deeply rimate, acutely subcylindric, 

 corneous-tawny, somewhat shining, smooth, the apex obtusely 

 conoid. Whorls 5%, a little convex. Aperture regularly 

 oval, 6-plicate : one lamellif orm angular ; one transverse pari- 

 etal; a rather prominent columellar; and three nearly equi- 

 distant punctiform teeth in the outer margin. Peristome 

 simple, a little expanded, the margins separated. Length 2, 

 diam. 1 mm. (Morelet). 



Comoro Is. : Mayotte, on the islet of Dzaoudzi, on the bark 

 of an Acacia. 



Pupa minutalis MORELET, Journ. de Conchyl., vol. 29, 1881, 

 p. 231, pi. 10, f. 5. 



The form is cylindric with obtuse, rounded or convexly 

 conic summit. The surface is rather dull with some irregular 

 striation. The angular lamella is quite low, forwardly diverg- 

 ing from the parietal and joining or almost joining the outer 



