IQQ Pelecypoda. — Tellinacea. 



Habit. : Alger (Joly, Monterosato); ^Rinaldo"s Chair" (Jeffreys) : litora 

 Galliae (Dubbeuil) ; Corsica (Payeaudeau) ; Morea (Deshayes). 



Subgen. Acropagia Leach. Orbicularis, plerumque tumida, crassa ; cardo 

 utrinque dentibus 2 primariis, dextra anteriore, sinistra posteriore bifido, utrinque 

 lateralibus 2, dextra fortibus, sinistra debilioribus [sec Bertix in valva sinistra 

 singulus tantum dens primarius]. 



14. Tellina balaustina L. {Lucina halaustvia Payk., Acropa/jia bdJaustina 

 Bektin). Testa ovata, lenticularis , tenuiscula , aequilatera, utrinque aequaliter 

 rotundata, omnino clausa, concentrice tenuiter striata, alba, radiis purpureis picta, 

 apicibus flavis ; postice evidenter plicata ; cardo dentibus primariis binis utrinque, 

 dextra posteriore, sinistra anteriore majore, subbifido, lateralibus dextra validis, 

 sinistra nullis ; sinus parvus cum linea palliali angulum latum formans. — Long-. 12, 

 alt. 15, lat. 7 mm (specimina atlantica duplo majora). 



Distrib. : Atlanticum lusitanicum ad Magnam Britanniam; Propontis. — 

 Fossilis in stratis tertiariis Siciliae, Belgiae, Angliae. 



Habit. : 2 — 130 org. prof. ; litora Hispaniae: Algesiras (Hidalgo), Gib- 

 raltar, Cartagena (McAndrew), Cabo de Gata (Jkffreys), Cabo de Palos, Bar- 

 celona, Mataro, Rosas (Hidalgo); ins. balear. : Palma, Alcudia, Cala Taulera, 

 Mahon (Hidalgo); Alger (Weinkauff) , Mers-el-Kebir, Bona, Chercliel, Arzew 

 (Deshayes); litora Galliae (Petit, Dubreuil), Agde, Fos (Bertin) , Marseille 

 (^Ancey), la Joliette, fort St. Jean, Pliaro , Roucas-Blanc, Gaiiaban, Pomegue 

 (Marion), "Toulon, St. Raphael (Petit, Doublier, Gay ) ; Nizza (Verany) ; litora 

 pedemontana (Jeffreys) ; Corsica (Payraudeau , Eequien) ; Sardinia : Bonifacio 

 (Rolle) ; Spezia (Tapparone-Canefri) ; Livorno, Pianosa, Giglio, rar. (Appelius) ; 

 Napoli (Scacchi); Sicilia (Philippi), et ins. adjacent. (Aradas et Benoit), prom. 

 S. Vito (Monterosato) ; „Adventure Bank" (Jeffreys); Taranto (Philippi) ; 

 Adria: var. attja (Monterosato), litora occident. (G. v. Martens), Neresine (Grubk), 

 Lesina, Curzola, Lagosta (Heller), Grado, Pirano, Cherso, Lussin (Stossich), 

 Zara (Sandri) ; Morea (Deshayes) , sin. Cervi (Forbes) ; mare Aegeum (Jeff- 

 reys), Paros (Forbes). 



15. T. crassa Pexn. (r. rigida Don., Acropagia crassa Brown, ? T. oirftis 

 ESqu.). Testa ovato-triangula, compressa, crassa, subinaequivalvis, valva sinistra 

 major, magis convexa, liris concentricis numerosis undique sculpta, interstitiis sub 

 lente decussatis, sub epidermide decidua fibrosa alba, purpureo radiata; umbones 

 contigui; cardo dentibus primariis utrinque binis, lateralis dexter permagnus; 

 sinus pallialis profundus. — Alt. 40, long. 52 mm. 



Distrib. : Atlanticum medium et boreale; Japonicum. — Fossilis in stratis 

 tertiariis, Rhodus, Sicilia, Italia, Viiidobona, Belgia, Anglia. 



Habit. : 0—55 org. prof. ; Gibraltar (Mc Andkew, Jeffreys); Alger (Wein- 

 kauff), Cap Lindeles (Deshayes); litora Galliae (Dubeeuil), Sicilia: prom. 

 S. Vito (Monterosato), Tunis (McAndrew). 



Subgen. Macoma Leach. Testa ovata, ventricosa; dentes priraarii sini- 

 plices debiles, paullo divergentes, laterales nulli; sinus pallialis saepe innequa- 

 liter formatus. 



16. T. balthica L. (T. sotichila Mtg., T. carnaria Mtg., nec L., T. zonata 

 Gm., Fsammotjia fiisca Say, T. neustriaca Loc. , Macoma tjatthica Sars). Testa 

 sat convexa, rotundato-triangula , antice breviter lateque rotundata, postice atte- 

 nuata et infra producta, apice obtuse acuminato ; margo ventralis arcuatus, dor- 

 salis anticus convexus, jiosticus subrectus et valde declivis ; umbones antemediani ; 

 alba irregulariter concentrice striata, intus nitidissima, laete rosea : cardo dentibus 



