1867.] MR. H. ADAMS ON NEW MAURITIAN SHELLS. 303 



For this new species and many other fine objects I am indebted 

 to Mr. S. White, of Adelaide, South Australia, -nho procured them 

 in the interior of that country. 



7. Descriptions of New Species of Shells collected l)y Geoffi'ey 

 Nevill, Esq.; at Mauritius. By Henry Adams^ F.L.S. 



(Plate XIX.) 



VoLVARiA (Volvarina) pusilla, H. Ad. (PL XIX. fig. 1.) 



V. testa fusiformi, 'pallida ; spira elevata, apice ohtusiiiscula ; 

 anfr. 5, convexiuscuUs, ultimo antiee attenuate, fostice paulum 

 ascendente ; columella quadniplicata ; apertura anyusta ; lahro 

 incrassato, intus dentato. 

 Long. 5, diam. 2\ mill. 

 Hab. Port Louis Harbour, Mauritius. 



This small species of the genus Volvaria has much the appearance 

 of V. neglecta, Sow. ; but the outer lip is strongly denticulated, while 

 that of V. neglecta is smooth. 



Macrochlamys minima, H. Ad. (PI. XIX. fig. 2.) 



M. testa subperforata, depressa, discoidea, tenui, vix striatula, 

 pellucida, nitida ; sjnra p)laniuscula, sittiwa profunda ; anfr. 4, 

 eonvexis, ultimo non descendente, bast convexo ; apertura vix 

 obliqua, lunari ; perist. simplici, acuto, margine colmnellai'i 

 superne refexiuscido. 



Diam. U, alt. | mill. 



Hab. Near Port Louis, Mauritius. 



Although this species is so minute, it appears to be adult, and is 

 therefore deserving of record. 



Macrochlamys perlucida, H. Ad. (PI. XIX. fig. 3.) 



M. testa anguste umbilicata, depressa, tenui, Icevigata, pellucida, 

 nitida; spira brevissime conoidea, sutura marginata ; anfr. 5|, 

 convexiuscuUs, arete convolutis, ultitno vix descendente, 2^eri- 

 pheria rotundato, basi medio impresso ; apertura obliqua, lu- 

 nari ; 2^erisf. simpiici, recto, margine columelluri superne re- 

 fexiusculo. 



Diam. 6, alt. 4 mill. 



Hab. Peter Botte, Grand Bassin, Trou-aux-Cerfs, ^Mauritius. 



" The animal of this species presents a very pretty appearance, the 

 mantle being of a bright-yellow colour spotted with black, and the 

 foot bright yellow, while the tentacles are entirely black." — G. Nevill. 



Stylodonta (Erepta) rufocincta, H. Ad. (PI. XIX. fig. 4.) 



S. testa vix perforata, conuideo-lenticiduri, solidida, superne con- 

 fertim arcuato-striata, pullide rufa, fascia rufa supra carinam 

 alteraque suturali ornata ; spira paruni elevata, apice obtusa, 



