1869.) MR. H. ADAMS ON NEW MARINE SHELLS. 273 
plici ; canali mediocri, antice roseo tincta; labro intus leviter 
lirato. 
Long. 20, lat. 10 mill. 
Hab. Barkly Island, Mauritius (Coll. Barclay). 
Genus Mauriria, H. Ad. 
Testa fusiformis, spira acuminata ; apertura angusta, lineari, antice 
truncata; columella numerose plicata; labro extus incrassato, 
antice decurtato. 
Mavrirta Barczuayl, H. Ad. (Plate XIX. figs. 5, 5a.) 
M. testa oblongo-fusiformi, solida, striis concentricis confertis (an- 
tice validioribus) sculpta, lineis rufis distantibus transversis 
cincta, callo vitreo tenui fulvo tecta; spira brevi, subacuminata, 
apice acutiusculo, sutura leviter impressa; anfr. 8, subplanatis, 
ultimo ascendente, 2 longitudinis equante ; apertura angusta, an- 
tice latiore ; columella callosa, plicis parvis obliquis ad 10) (supe- 
rioribus majoribus) antice instructa, truncata, producta, basi re- 
curvata; labro postice angulato, margine recto, extus valde 
incrassato. 
Long. 50, lat. 15 mill. 
Hab. Barkly Island, Mauritius (Coll. M‘ Andrew). 
In general appearance Mauritia resembles Dibaphus, but from 
that genus the presence of folds on the columella distinguishes it. 
From Mitra it differs both in form and in the columellar plaits being 
much more numerous and less distinct. 
Marcinetia (GLABELLA) MIRABILIS, Barcl. MS. (Plate XIX. 
figs. 6, 6a.) 
M. testa trigono-ovata, solida, polita, longitudinaliter valde plicata, 
plicis subtus obsoletis, albida, lilaceo nebulosa et fasciata, punctis 
lividis aspersis, fascia livida angusta interrupta ad suturam et ad 
peripheriam ornata; spira parum elevata, apice obtuso, sutura 
mediocri; anfr. 6, ultimo ascendente; apertura angusta; colu- 
mella plicis 4 validis vie obliquis instructa ; labro extus valde in- 
crassato, albido, maculis et liris sanguineis notato, intus crenulato. 
Long. 32, lat. 19 mill. 
Hab. ? (Coll. Barclay). 
Nacetta (CeLLana) cernica, Barcl. MS. (Plate XIX. 
figs. 7, 7a.) 
N. testa tenui, ovata, depresso-conica, costis obtusis radiantibus 
numerosis et liris elevatis concentricis confertis undulatis decus- 
sata, albida, radiis rubro-fulvis ornata ; apice subcentrali, obtuso ; 
apertura ovata; fascia interna secundum superficiem exteriorem 
decussata et picta, micante, submargaritacea ; margine plus mi- 
nusve late crenulato. 
Long. 39, lat. 29, alt. 10 mill. 
Hab. Barkly Island, Mauritius (Coll. Barclay). 
