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Journal de conchyliologie

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— 353 —<br />

num ?ion liberum, expansum, imjirimis ad occursum an-<br />

frac tus penuUimi dilatatum, internum brevissinnmi, ro-<br />

tundatum. — Operculum normale. — Diam. maj. 9 1/2<br />

mm. 8, ait. 6 mill. Apertura 3 mill. longa et lata. (Coll.<br />

Grosse.)<br />

Habitat in régions Dominicanainsulœ Haïti, Antillarum<br />

(W. M. Gabb).<br />

2. Choanopoma Gabbi.<br />

T. late et perspective umbilicata, brevissime <strong>de</strong>presso^<br />

conica, tenuiuscula sed solidula, vix siibtranslucida,<br />

transversim costulata et supra médium imicarinata, Ion-<br />

gitudinaliler liris validis, crebris, elegantissime <strong>de</strong>ciis-<br />

sata, sordi<strong>de</strong> albida, fusco obscure spiraliter zonata ;<br />

spira brevissime conica, apice obtusulo; sutura profun<strong>de</strong><br />

impressa, late canaliculata, <strong>de</strong>nliculis subdistantibus,<br />

plerumque bifidis subobstructa ; anfr. 41/2 breviter gra-<br />

dati, embryo7iales primi 2 sublœvigati, lutescentes, ulti-<br />

mus antice vixascen<strong>de</strong>ns, pone margine^n externum sub-<br />

conslrictus, basi subplanatus, carinis 5 <strong>de</strong>nticulatis spira-<br />

liter cinctus, prima supramediaiia, secunda mediana va-<br />

lidiore, acuta, tertia inframediana, qiiurta et quinta basa-<br />

libus, inter secundam et tertiam zona fusca obscure pictus;<br />

umbilicus intus inconspicue costulatus ; apertura oblique<br />

siibhorizontalis, circularis, intus co7icolor ; péris toina du-<br />

plex, externum non liberum, expansum, latum, flexuose<br />

foliaceum, co?icentrice tenuissime str^iatulum, albidum,<br />

fusco obscure maculatum, internum brève, prominulum,<br />

rotundatum. — Operculum subnormale, margine anfrac-<br />

tuum extus parum prominente.—Diam. maj. 7, min.^^f^,<br />

ait. 4 mill. Apertura 2 1/4 mill. longa et lata. (Coll.<br />

Grosse.)<br />

21

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