46 



Emhlu n. g. 



ralis d'j dentes laterales nulli. 

 postice leviter sinuosa. Animal 

 cirrigero, siphonibus instructum. 



T. aequivalvis, postice 



hians, truncata; ligamen- 



tum internum c foveaeutri- 



usque valvae insertum, an- 



te quam in v. d. dens car- 



dinalis bj in v. s. fossa car- 



dinalis b' ; in v. s. dens la- 



teralis anticus a et posti- 



cus d, in v. d. fossa late- 



Jmpressio palliaris lata, duplicata, 



paJlio ventre aperto, postice Jonge 



Specimen unicum mancum vidi. 



319. E. Korenii n. — T. ovata, ventricosa, suboequilatera, antice 

 rotundata, postice truncata, alba, aculeis minutissimis creberri- 

 mis truncatis aspera , epidermide lenui; umbones prominentes, 

 paullum ante medium siti, incurvi et antrorsum flexi; lunula 

 distincta, brevissima, lata; margo lunularis leviter concavus, li- 

 gamentalis nonnibiJ arcuatus, ventralis levissime sinuatus, posli- 

 cus angulato-truncatus, hians, plica subduplicata obsoleta ab 

 angulo inferiore ad umbonem currente; cardo v. s.: dens latera- 

 lis anticus a obsoletus, marginalis; fossa cardinalis b' profunda, 

 rotundato-trigona, infra aperta; fovea ligamenti c subovalis, lon- 

 gitudinalis, antice et infra callo definita, postice aperta; dens 

 posticus d Jaminaceus, marginalis; cardo v. d.: dens card. b bre- 

 vis, validus, prominens, apice truncato fissus, superne sulcatus; 

 fovea ligamenti c oblonga, obliqua, fossa postica d', illae proxi- 

 ma, triangularis; impressio muscularis antica ovata, posterior 

 major, rotundata, utraque superne lobo aucta; impressio pallia- 



ris interna lacera, postice sinu levi, externa integra; ^? 

 (Koren dd.) 



Bergen. 



Thracia Leach. 



320. T. convexa (Mya) Wood, (Anatina) Tuiu. , (Amphidesma) Flmg., 

 (Thracia) Bkown, Tuorpe, = T. declivis Macg. Boh. 



321. T. phaseolina (Amphidesma) Lamk., (Thracia) Kienkr, Couth., 

 Phil. , annon = k. declivis Turt. ? (non Penn., Don. 82, Brown, 

 quae = M. pubescens Pult.), annon = T. pubescens Macg. ? 

 — ■ Processus cardinalis longitudinalis, subangustus, sed quarn 

 m praecedente nonnihil robustior, ossiculum validum; testa te- 

 nuissime scabra. 



322. T. distorta (Mya) Mont., Dillw., (Anatina) Turt. — Processus 

 cardinalis prominulus, semiovalis; ossiculum validum; sinus pal- 



