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Show 1868.] MR. H. ADAMS ON SHELLS FROM MAURITIUS. 13 angulato-ovali; perist. simplici, acuto, recto, marginibus callo tenuissimo junctis, columellari arcuato. Diam. maj. 10, min. 8, alt. 8 mill. Hab. Mauritius. This species is closely allied to N. philyrina, Morel., and Ni imperfecta, Desh., which latter species has also been met with by Mr. Nevill at Mauritius. PUPA (PUPILLA) EXIGUA, H. Ad. (Pl. IV. fig. 4.) P. testa profunde rimata, ovato-cylindrica, tenui, levissime striata, sericea, fusco-cornea; spira convexa, apice obtuso; anfr. convexis, ultimo circa rimam obtuse angulato, pone aperturam angustiore, bisulcato; apertura truncato-ovata, verticali, 2 parietalibus, dextra prominente, sinistra remota; perist. expansiusculo, margine dextro sinuato, plicis 2 intranti-bus munito. Long. I|, diam. f mill. Hab. Bamboo, Mauritius. GIBBUS (GIBBULINA) MONDRAINI, H. Ad. (Pl. IV. fig. 5.) G. testa profunde arcuato-rimata, subcylindrica, solidiuscula, peroblique flexuoso-costata, sordide fiavida ; spira apice acuminata ; anfr. 7, convexiusculis, ultimo antice ascendente, rotundato; apertura verticali, truncato-ovali, dente parietali pliciformi prope angulum munita; perist. subincrassato, expanso, reflexiusculo, marginibus callo junctis, dextro subsinuato. Long. 20, diam. 10 mill.; 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.) G. testa profunde rimata, cylindrica, solidiuscula, costulis subremotis sculpta, fiavida; spira cylindrica, in conum obtusum terminata, sutura distincta; anfr. 7, convexiusculis, ultimo antice vix ascendente, basi compresso ; apertura subver-ticali, ovali, dente parietali mediocri prope angulum coarctata; perist. continuo, incrassato, superne subsinuoso, adnato, undique expanso, subrefiexo. Long. 17, diam. 7 mill. Hab. Mauritius. GIBBUS (GIBBULINA) PRODUCTUS, H. Ad. (Pl. IV. fig. 7.) G. testa rimata, cylindracea, tenui, suboblique confertim costulata, sordide flava; spira cylindrica, apice convexo-conico, sutura distincta; anfr. 8, planiusculis, ultimo basi subcom-presso; plica columellari profunda; apertura subobliqua, oblonga, dente parietali valido prope angulum coarctata ; perist. |
