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biculare, costis antico el interdum prope marginem ventralem
tuberculatis*’, ct sec. fig. postico rotundatum. Icon a Rkevb
data descriptioni Mont. parum congrua; testa longior etiam
quam nostra. C. exiguum Mont. (non Phil.) subtriangulare,
tostis viginti tuberculatis. C. ovale Sow. (”= C. elongatum Mont.”)
forma quadrat, sed costas babet ”anticas obscure subtilissime
muricatas’’; costas dat Moht. 21, Turt. 25. Bob. — Finm.
263. G. nodosum Mont., Turt. — T. ovato-orbicularis, parum
convexa, acquilatcra, postice truncata, costis 26 tuberculatis; {;J
mm. — Umbones medii, tubercula antice elongata, medio
ovalia 1. teretia, postice acuminata; interstitia punctalo-rugosa.
Boh. — Finm.
269. C. suecicum Reevb 132 (**Suedicnse” — lapsus calami) =
G. Lovéni Thomp». — T. cordato-orbicularis, obliqua, tumida,
alba, costis 30 dense squamosis; mm. — T. leviter
marga-ritacea; squamae laminares utrinque crebriores; interstitia
utrinque profundiora, striata. Boh. — Finm.
270. C. parvum Pdil.? (non Sow., quod prius descr.) — T. oblique
cordata, convexa, costis 21 parum elevatis, anticis luberculosis,
interstitiis punctatis; mm. — Unicum spec. ad ins. Koster
prof. 70 org. inveni. Costae mediae subplanulatae, anticae tres
tuberculis teretibus praeditae; interstitia utrinque profundiora,
punctis impressis striata, medio minus conspicuis. Forpia cum
specim. a Phil. communicatis convenit, sed costarum numero et
epidermide laxiore, rugosa diflert. Boh.
Ltocardia Lamk.
271. I. cor (Chama) L. Bob.
Astarte Sow.
Species nostrae admodum variabiles usque ad deformitatem,
valvarum convcxitatc, plicarum numero, latere postico oblusalo, retuso,
exfoliato, margino incrassato, cardine luxurianto. — Impressio nb
umbonibus ad medium marginem posticum decurrens sinum efficit etsi
levissimum. — Venus borealis L. non hujus generis; vide ad
Lucinam infra.
272. A. danmoniensis (Venus) Mont., (Crassina) Lamk., Dksh.,
Bhown, Thorpk, (Astarte) Sow., Flmg., Macg. = Cr. sulcata Turt.,
Phil., lno/i {Venus) Mont.,) = Chkmn. VII, f. 413. — T.
ro-tundato-cordata, postice oblusa, solida, subacquilatera, plicis 22
—30, margine crasso, intus crenulato, epidermide castanea;
2.Jfs, crass. 11,2; cras*. 11,5; {5, cr. 7,3; cr. 6,5
mm. — Pullos margine crenulato non vidi. Kull. — Firim.
273. A. scotica (Venus) Mat. et Rack., Moxt., Lamk., Desh. ,
(Astarte) Flmg., Macg., Tuorpe f. 107 (s. n. A. ellipticae), (Crassma)
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