110 Pelecypoda. — Cardiacea. 



7. Subordo. Cardiacea Fischer. 



Pes byssifer et siilcatus; musculus adductor singulus aut duplex; pallium 

 tribus orificiis pertusum, antico pedali, reliquis siphonalibus; brancliiae inaequales; 

 testa aequivalvis , libera , solida ; cardo vario modo formatus , ligamento semper 

 externo ; linea pallialis integra aut sinuosa. 



15. Fam. CARDIIDAE (Lam.) Ad. Pes elongatus, geniculatus, sipliones 

 breves , orificiis firabriatis ; brancliia interna major , cum eadem lateris oppositi 

 post connata, externa appendiculata ; testa aequivalvis, clausa, costis radiantibus 

 tuberculosis aut spinosis plerumque ornata, margo internus denticulatus aut crenu- 

 latus; utrinque dentes 1 — 2 primarii, laterales remoti non constantes. 



Cardium L. [Cerastes Poli). Pallhmi papiUosum , ante apertum, siplwncs 

 hrevcs hasi conjuncii, papiUosi, analis valvula munitus; pes magnus conicus, genicu- 

 latus, hijssus Jiaud constans, filamentum singulum praebens; paJpi longi trigoni; testa 

 convexa, solida, sacpe clausa, epidermide tecta, costis radiantihus ornata, saepe spinosa 

 aut ccliinata; umhones prominuli, secl perpaidlum antrorsum versi; cardo dentibus 2 

 primariis lateralilmsqiie 2; ligamentum externum ; margo testae undulatus. 



m 1. C. hians Beocchi (C. indicum Lam. , C. Darwini Mayer). Testa 

 cordato-globosa , solidula , postice latissime liians , recte truncata , ad marginem 

 dentibus distantibus crassis munita, costis radiantibus 19^ — 23 latis carinatis 

 sculpta , posticis 5 — 6 depressis , latioribus , anticis sensim multo tenuioribus di- 

 stantibus squamiferis , squamis erectis cochleariformibus , in medio valvarum ob- 

 soletis, postice in spinas mutatis, interstitiis costa ultra medium evanescente di- 

 visis ; albida plus minusve rufa aut badia , squamis spinisque pallidis ; umbones 

 inflati, valde prominentes, fere mediani; area ringens, ligamentum prominens. — 

 Long. 100, alt. 90, lat. 80 mm. 



Habit. : Alger (Monterohato, Weinkauff), Sidi Feruch (Weinkauff), Cap 

 Eose, Bona (Petit); Toulon (Locaed). Prof. 20 — 100 org. — Fossilis in stratis 

 tertiariis. 



m 2. C. erinaceum Lam. (C. cchinatum Poli). Testa magna solida, ro- 

 tundato-cordata , oblonga, subaequilatera , antice breviter et oblique rotundata, 

 postice fere recte truncata , levissime hians , pallide lutescenti-albida , interdum 

 fuscescens, costis ad 33 — 35 latiusculis utrinque angulatis, quam interstitia trans- 

 verse striata multo latioribus linea impressa divisis , anterioribus dense papilli- 

 feris, posterioribus aculeatis ; umbones leviter retrorsum curvati, vividius colorati. 

 — Diam. ad 90 mm. 



Habit.: Litora Hispaniae: Gibraltar (McAndrew), Mataro, Barcelona (Hi- 

 DALGo) ; ins. balear. : Menorca, Mallorca, Mahon, isla del Aire (Hidalgo), Conejera 

 (McAndrew); Alger (Weinkauff); litora Galliae (Petit, Dubeeuil), Aigues- 

 Mortes (Cli^ment), Montredon, cap Pinede, Mejean, Riou (Marion) ; litora pede- 

 montana (Jeffeeys) ; Corsica (Payeaudeau, RSquien) ; Sardinia : Bonifacio (Rolle) ; 

 Elba , Livorno (Appelius) ; Napoli (Poli , Scacchi) ; Ustica (Calcaea) ; Sicilia 

 (Philippi), Palermo, Aci-Castello, Aci-Trezza (Aeadas et Benoit); Adria (Olivi, 

 Beocchi), Venezia (G. v. Maetens), Lesina (Hellee), Gruizza (AVimmee), Zara 

 (Sandri); mare Aegeum, rariss. (Foebes). — Fossilis in stratis tertiariis. 



3. C. aculeatum L. Testa subcordata, postice oblique truncata, solidula, 

 postice anguste liians, costis 20 — 23 phine-convexis, linea exaratis sculpta, costis 

 anticis angustis, papilliferis, reliquis acuk^atis, posticis fere obsoletis, spinis longio- 

 ribus munitis, Interstitiis subplanis, angustioribus, transversim striatis; lutescenti- 

 alba, rufescente profuse tincta. — Diam. ad 80 mm. 



II 



