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Embla d. g.
T. aequivalvis, postice
hians, truncata;
ligamen-tom internam c foveae
utri-usque valvae insertam,
an-I te quam in v. d. dens
cardinalis bj in v. s. fossa
cardinalis 6 / in v. s. dens
lateralis anticus a et
posticus d, in v. d. fossa late-
ralis dentes laterales nulli. Impressio palliaris lata, duplicata,
postice leviter sinuosa. Animal pallio ventre aperto, postice longe
cirrigero, siphonibus instructum. Specimen unicum mancum vidi.
319. E. Korenii n. — T. ovata, ventricosa, subaequ i latera, antice
rotundata, postice truncata, alba, aculeis minutissimis
creberrimis truncatis aspera, epidermide tenui; umbones prominentes,
paullum ante medium siti, incurvi et ant?orsum flexi; lunula
distincta, brevissima, lata; margo lunularis loviter concavus,
li-gamentalis nonnihil arcuatus, ventralis levissime sinuatus,
posticus angulato-truncatus, hians, plica subduplicata obsoleta ab
angulo inferiore ad umbonem currente; cardo v. s.: dens
lateralis anticus a obsoletus, marginatis; fossa cardinalis 6’ profunda,
rotundato-trigona, infra aperta; fovea ligamenti c subovalis,
longitudinalis, antice et infra callo definita, postice aperta; dens
posticus d laminaceus, marginalis; cardo v# d.: dens card. 6
brevis, validus, prominens, apice truncato fissus, superne sulcatus;
fovea ligamenti c oblonga, obliqua, fossa postica d’, illae
proxima, triangularis; impressio muscularis antica ovata, posterior
major, rotundata, utraque superne lobo aucta; impressio
palliaris interna lacera, postice sinu levi, externa integra; ^ mm.
(Koren dd.) Bergen.
Thracia Lkach.
320. T. convexa (Mva) Wood, (Anatina) Turt., (Amphidesma) Flmg.,
(Thracia) Brown, Tuorpe, = T. declivis Macg. Boh.
321. T. phaseoli na (Amphidesma) Lamk., (Thracia) Kiener, Coutb.,
Phil., annon = A. declivis Turt.? (non Penn., Dox. 82, Brown,
quae = M. pubescens Pult.), annon = T. pubescens Macg.?
— Processus cardinalis longitudinalis, subangustus, sed quam
in praecedente nonnihil robustior, ossiculum validum; testa
tenuissime scabra.
322. T. distorta (Mya) Mont., Dillw., (Anatina) Turt. — Processus
cardinalis prominulus, semiovalis; ossiculum validum; sinus pal-
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