1868.] MR. H. ADAMS ON SHELLS FROM MAURITIUS. 13 



angulato-ovali ; perist. simplici, acuto, recto, marginihus callo 

 tenuissimo ju7ictis, columellari arcuato. 

 Diam. niaj. 10, min. 8, alt. 8 mill. 

 Hub. Mauritius. 



This species is closely allied to N. philyrina, Morel., and N.'itnper- 

 fecta, Desli., which latter species has also been met with by Mr. 

 Nevill at Mauritius. 



Pupa (Pupilla) exigua, H. Ad. (PI. IV. fig. 4.) 



P. testa profunde rimata, ovato-cylindrica, tenui, levissime striata, 

 sericea, fusco-cornea : spira convexa, apice obtuso ; anfr. 5, 

 convexis, ulthno circa rimam obtuse angulato, pone aperturam 

 angustiore, bisulcato ; apertura truncato-ovata, verticali, la- 

 minis 2 parietalibus, dextra prominente, sinistra remota ; 

 perist. expansiusculo, margine dextro sinuato, plicis 2 intranti- 

 bus munito. 



Long. 1|, diam, f mill. 



Hab. Bamboo, Mauritius. 



GiBBUs (Gibbulina) mondraini, H. Ad. (PI. IV. fig. 5.) tVYvv 



G. testa profunde arcuato-rimata, subcylindrica, solidiuscula, 

 peroblique Jlexuoso-costata, sordide fiavida ; spira apice acn- 

 minato ; anfr. 7, convexiuscidis, ultimo antice ascendente, basi 

 rotundato ; apertura verticali, truncato-ovali, dente jjarietali 

 pliciformi prope atigulum munita ; perist. subincrassato, ex- 

 panso, rejlexiusculo, marginibus callo junctis, dextro subsinuato. 



Long. 20, diam. 10 mill, j ap. 8 mill, longa, 5 mill. lata. 



Hab. Mauritius. 



This species appears to be recognized at Mauritius under the name 

 of mondraini, which it is therefore desirable to retain. 



Gibbus (Gibbulina) barclayi, H. Ad. (PL IV. fig. 6.) ^Vvvn 



G. testa profunde rimata, cylindrica, solidiuscula, costulis obli- 

 quis subremotis sculpta, Jlavida ; spira cylindrica, in conum 

 obtusum terminata, sutura distincta ; anfr. 7, convexiuscidis, 

 ultimo antice vix ascendente, basi compresso ; apertura subver- 

 ticali, ovali, dente parietali mediocri prope angidum coarctata ; 

 perist, co7itinuo, incrassato, superne subsinuoso, adnato, undique 

 expanso, subreflexo. 



Long. 1 7, diam. 7 mill. 



Hab. Mauritius. 



Gibbus (Gibbulina) productus, H. Ad. (PI. IV. fig. 7.) PfYK 



G. testa rimata, cylindracea, tenui, suboblique confertim costu- 

 lata, sordide flava ; spira cylindrica, apice convexo-conico, 

 sutura distincta ; anfr. 8, planiusculis, ultimo basi subcom- 

 presso : plica columellari prof unda ; apertura subobliqua, ob- 

 longa, dente parietali valldo prope angidum coarctata ; perist. 



