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Journal de conchyliologie

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— 158 —<br />

subovale, cartilagmeo-corneum, planiusculum, medio<br />

subincrassatum, ad marginem attenuatum, acutum, cor-<br />

neo-rufescens ; limbiis subangulatus ; nucleus suhexcentri-<br />

cus; anfractiis 5 sensim accrescentes ; pagina externa<br />

obsolète striato-plicatula, interna granosa, parum nitens,<br />

versus mnrginem lœvigata. — Diani. maj. 27, min. 21,<br />

ait. 25 mill. Apertura 13 mill. longa, 12 lata. (Coll.<br />

Grosse.)<br />

Var.li pallidior, zona <strong>de</strong>stituta, apertura et peristomate<br />

aurantio-fulvis. — Diam. maj. 26, min. 21, ait. 25 mill.<br />

Apertura 13 mill. longa, 12 lata. (Coll. Grosse.)<br />

Habitat iti insula Madagascar dicta : spacimina 21<br />

(18 ad formam typicam et 3 ad varietatem pertinentia)<br />

vidi.<br />

2, Hélix stragulum, Crosse et Fischer.<br />

T. anguste umbilicata, val<strong>de</strong> <strong>de</strong>pressa, tenuiuscula, sub<br />

lente îninnte granosa et lineis incrementi tenuissimis loti-<br />

gitudinaliter impressa, castaneo-fusca, maculi^ luteo-<br />

stramineis, raris guttata; spira subplanata, apice obtuso;<br />

sutura impressa; anfractus 4 planati, rapi<strong>de</strong> accrescen-<br />

tes, stiperi 2 1/2 violaceo-fusci, ultimus ad suturam luteo<br />

limbatus, magnus, supra sub<strong>de</strong>pressus, mox {paulo supra<br />

peripheriam) angulato-carinatus , basi convexus, inflatus,<br />

circa umbilicum subangulatus ; area umbilici saturate<br />

caslanea, zona palli<strong>de</strong> lutea circumdata; apertura<br />

magna, perobliqua, elliptico-ovalis, intus cœruleo-albida<br />

;<br />

peristoma late reflexum, cœruleo-albidum, marginibus'<br />

callo tenui junctis, externo medio et in vicinio insertionis<br />

dilatato. — Diam. maj. 36, min. 26, ait. 16 mill. Aper-<br />

tura cum peristomate, 21 mill. longa, 18 lata. (Coll.<br />

Grosse.)<br />

^

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