304 MR. H. ADAMS ON NEW MAURITIAN SHELLS. [Mai*. 14, 



sutura leviter impressa ; anfr. 6, planiusculis, lente accrescen- 

 tibus, ultimo antice breviter descendente, peripheria angulato, 

 bnsi modice convexo, sublcuvigato, leviter concentrice striata, 

 albido ; apertura obliqua, rotundato-lunari ; perist. simplici, 

 marginibus callo crasso junctis, columellari declivi, incrassato, 

 supra perforationem rejlexo. 



Diam. maj. 13, min. 12, alt. 7h mill. 



Hab. On sandhills near the sea-shove, Coromandel, Mauritius. 



Stylodonta (Erepta) nevilli, H. Ad. (PI. XIX. fig. 5.) 



S. testa subperforata, depresso-conica, oblique costulis undulatis 

 gj'anulosis remotiusculis niunita, pallide fulva ; spira breviter 

 conoidea, apice obtusa, sutura impressa ; anfr. 8, convexis, lente 

 accrescentibus, ultimo non descendente, ad 2)eripkeria)n suban- 

 gulato, subtus convexo ; apertura obliqua, lunato-rotundato ; 

 2^erist. acuto, intus labiato, marginibus callo tenui Junctis, co- 

 lumellari incrassato, rejlexiuscido. 

 Diam. maj. 12, min. 10, alt. 7 mill. 

 Hab. The Pouce Mountain, Mauritius. 



This species has characters in common with both <§. suffulta, Bens., 

 and S. setiliris, Bens., but is larger and less globose than the former, 

 and is without the prominent columellar tooth of the latter ; while 

 from the latter it also differs in being larger, less umbilicated, and in 

 the absence of the undulate lines of hairs. I have much pleasure in 

 naming it after Mr. Geoffrey Nevill, a very enterprising young natu- 

 ralist, to whom I am indebted for the opportunity of describing this 

 and the other species included in this paper. 



Pupa (Pagodella) ventricosa, H. Ad. (PL XIX. fig. 6.) 



P. testa profunde rimata, ovata, tenuiuscula, oblique striatula, 

 pallide fusca ; spira convexo-conica, sutura impressa; anfr. 5, 

 convexiusculis, ultimo ventricoso, basi rotundato ; apertura 

 semiovali, plica parietali compressa, intrante, et dente prope 

 insertionem marginis dextri munita ; perist. simplici, vix expan- 

 siusculo, marginibus callo junctis, dextro subsinuato, columel- 

 lari superne dilatato. 

 Long. 2\, diam. 1| mill. 

 Hub. The Moka Ravines, Mauritius. 



This singular little species I cannot satisfactorily refer to any of 

 the present subgenera of the genus Pupa, and I therefore propose a 

 new subgenus for it under the name of Pagodella, which may be 

 characterized as follows : — 



Subgenus Pagodella, H. Ad. 



Testa rimata, ovata, optaca ; anfr. convexi ; apertura semiovalis, 

 2)licis parietal ibus 2; perist. tenue, rectum, vix expansiuscidum, 

 marginibus callo junctis. 



GiBBUs (Gibbulina) nevilli, H. Ad. (PI. XIX. fig. 7.) 



G. testa rimata, cylindracea, solidiuscula, oblique sinuato-costata, 



