Chamidae. — Veneridae. 117 



formans, posterior ol)lique truncatus: umbones excentrici recurvi spirales; lunula 

 late excavata; marg:o integer. — Diam. ad 100 mm. 



Distrib. : Atlanticum usque ad Norvegiam mediam. — Fossilis in stratis 

 tertiariis. 



Habit. : 4 — 1785 org. prof. ; litora Hispaniae : Cabo de Gata (Jeffreys), 

 Valencia, Barcelona, Mataro (Hidalgo) ; ins. balear. : Ciudadela (Hidalgo) ; Alger 

 (Weinkauff), Ji.jeli, Rasel Amush (Jeffreys) ; litora Galliae (Petit, Dubreuil), 

 Eoussillon iLolakd), Cette (Grax(;ek), Aigues-Mortes (Clemext), ^Marseille, Mejean 

 {Marion), St. Tropez (Gay), Antibes (Doublier, Gay) ; Nizza (Rissd, VfiRANY); 

 litora pedemontana (Jeffreys); Corsica (Payraudeau, R^quien); Livorno, rar. (Ap- 

 pelius); Napoli (Scacchi); Sicilia (Philippi), prom. S. Vito (Monterosato) ; „Ad- 

 venture Bank" (Jeffreys); Taranto (Salis); Adria (G. v. Martexs), Venezia (Wein- 

 kauff), Zara (Sandri), Spalato (Stossuh), Promontore et Quarnero, rariss. (Stos- 

 sich) ; Morea (Deshayes) : mare Aegeum (Jeffreys) , Creta (Spratt, Jeffreys). 



N m. V u 1 s". : Venezia : Bibaron de mar (G. v. Martens). 



Cypricardia Lam. (Libitina Schum., Coralliophaga Blv., Trapeziiim Mgle. p., 

 nec Humphr.). Lohi paUii papillosi paiiim connati , rima pedalis brevis, siphones 

 scssiles; jjes parvus. comprcssus, b>/ssifcr; pjaJpi lahiales breres; hranchiae profnndc 

 plicatae inaequales, externa appendicnlata ; testa oblonga , acquiraJvis, inacquilatera, 

 solida, carinata aut ohliquc angulosa, umhoncs antici subterminales ; margo cardinalis 

 <rassiis, utrinque '2 — .5 dentibus divergentihus, lateralihus dextra 1, sinistra 2. 



m 1. C. lithophagella Petit {Cardita lithophagella Lam., JBi/ssomga G-ue- 

 rini Payr., Saxicara (Turrini Phil., Chama coralliophaga Brocchi, Byssomi/a fra- 

 gilis CosTA, Cgpricardia licnieri Nardo ; juv. : Pgthina setosa Dkr., Fscudopythina 

 setosa FiscH.)v Testa oblonga, cj^lindracea, supra compressa, tenuis, albida ; angulo 

 obliquo , obtuso, striis transversis tenuissimis; umbones fulvi. — Loug. 17 mm. 



Habit.: Barcelona , Mahon (Hidalgo) ; Alger (Deshayes, Weinkauff) ; 

 litora Galliae (Petit), Palavas (Dubreuil), Toulon, Hyeres (Petit, Dubreuil); 

 Nizza (VfiRANv) ; Corsica (Payraudeau , RfiQUiEx) ; Spezia , rar. (Tapparoxe- 

 Canefri); Napoli (Scacchi); Sicilia (Philippi), Palermo, Catania, Aci-Trezza 

 (Aradas et Benoit), Messina (Seguexza), Sciacca (Monterosato) ; Adria : Venezia 

 (Nardo), Zara (Sandri), Lesina, Lagosta, Ragusa (Heller), Rovigno, Ossero, 

 Oherso (Stossich), Crivizza (Grube). 



18. Fam. VENERIDAE Stol. (Conchae Desh.). Pallium antice late aper- 

 tum; pes plerumque elongatus acutus, rai-ius crassus quadratus, interdum fovea 

 bj^ssali, rarius bysso; siphones longitudine varia, basi connati oriticiis timbriatis 

 aut pro parte conjuncti ; branchia externa brevior appendiculata ; utrinque dentes 

 2 — 3 primarii. interdum dens sub lunula, laterales nulli. 



Cytherea Lam. (nec Bolten, Meretrix Lam. antea). Pallium fimbriatum, 

 undulatum; siphones magni, in tota fere longitudinc uniti , orifciis timhriatis; pes 

 inagnus, crassus, sine hgsso ; testa crassa, marginihus non crenulatis; cardo dentibus 

 ternis primariis tdrinque, in ralva dextra lateralibus duohus anticis inaequalibus . iu 

 sinistra laterali singulo anfico. 



1. C. chione Lam. (Vcnus chione L., Callista coccinea Poli, Callista chione 

 Ad., C. lacrigata Risso, Dionc chione M(rLE.). Testa ovato-cordata , laevissima, 

 nitens, fulva, (jbscure radiata, concentrice obsolete sulcata : umbones subcontigui 

 recurvi, lunula lanceolata, distincte detinita : ligamentuin crassum prominulum. — 

 Long. ad 70 mm ilong. 110, lat. 85 mm, Bexoit). 



Distrib. : Atlanticum usque ad Norvegiam. — Fossilis in stratis tertiariis. 



