]^36 Pelecypoda. — Couchacea. 



leviter declivi, umbonibus minimis fere medianis aut paullo antemedianis, liga- 

 mento valde prominulo ; valvae solidulae , pallide roseae radiis rubris , distincte 

 concentrice striatae, striis posticis fere lamellatis, plica distincta ab umbonibus 

 ad angulum inferum posticum radiante instructae, epidermide conspicua, fuscata. 

 • — Long. 40 mm (Saks). 



Distrib.: Atlanticum ad Norvegiam borealem; Propontis. — Fossilis in 

 stratis pliocenicis. 



Habit. : — 90 org'. prof. ; litora Hispaniae : Algesiras (Jeffreys), Gibral- 

 tar, Malaga (McAndrew), Cartagena (JErFREys), Barcelona, Mataro (Hidalgo) ; 

 ins. balear. : Malion (Hidalgo), Alger (Deshayes, AVeinkauff), Benzert (Jeffeeys), 

 Cap Lindeles, Habibas, Mers-el-Kebir (Deshayes); litora Galliae, Agde (Petit), 

 Cette (Grangee), Aigues-Mortes (Cl^iment), Marseille (Ancey), cliateau d'If, fort 

 St. Jean, Carry, Ratonneau, Mejean, Garlaban (Marion), Toulon (Gtay); Corsica 

 (RfiyuiEN); Napoli (Scacchi, Philippi); Sicilia (Aradas et Benoit), Palermo, rar. 

 (Philippi); Taranto (Salis); Adria: Yenezia (G. v. Martens), Lesina (Heller), 

 Zara (Sandei), Pirano, Rovigno, Cherso, Lussin, Brevilacqua (Brusina, Stossich); 

 mare Aegeum, rariss. .(Forbes). 



3. Psammobia tellinella Lam. Testa paullo compressa, elliptico-oblonga, 

 aequilatera, antice anguste rotundata, postice submutica, margine ventrali leviter 

 arcuato, dorsali utrinque paullum declivi, umbonibus parvis, medianis, ligamento 

 brevi prominulo; valvae subtenues, albido-flavescentes, radiis roseis, sublaeves, 

 epidermide inconspicua, dentibus primariis 2, altero bipartito, lateralibus uullis. 

 — Long. 26 nim. 



Distrib.: Atlanticum septemtrionale. — Fossilis in stratis tertiariis. 

 Habit. : — 85 org. prof. ; Sicilia (Jeffreys). 



4. Ps. costulata Turt. (P.s. cliscors Phil., Ps. gan Forb., nec L.). Testa 

 oblonga, utrinque rotundata, subaequilatera, tenuissima, fragilis, concentrice 

 tenuiter striata , colore vario , plerumque purpureo aut violaceo radiata , parte 

 postica sulcis longitudinalibus undulatis distincte exarata. — Long. 25 — 30 mm. 



Distrib.: Atlanticum usqne ad Magnam Britanniam. — Fossilis in stratis 

 tertiariis. 



Habit. : — 120 org. prof. ; litora Hispaniae: Gibraltar (McAndrew, 

 Jeffbeys), Barcelona, Mataro (Hidalgo); ins. balear. : Malion, Conejera (Mc 

 Andeew, Jeffreys), Malorca, Ciudadela, Cabo Bajoli (Hidalgo) ; Alger (Mc Andrew, 

 Weinkauff); litora Galliae (Dubreuil); Corsica (EEquien); Elba (Appelius); 

 Napoli (Scacchi, Philippi) ; Sicilia (Aradas et Benoit), Palermo (Philippi, Monte- 

 eosato), prom. S. Yito (Monterosato); Tunis (McAndrew); Adria: Lissa, 

 Lesina, Curzola, Lagosta (Hbller), Rovigno, Cherso, Lussin, rariss., Brevilacqua, 

 frequ. (Brusina, Stossich); mare Aegeum, rariss. (Forbes). 



5. Ps. intermedia Desh. {Ps. costafa Hanl.). „Testa ovato-transversa, 

 convexiuscula , solida, aequilateralis , albida, roseo grate radiata, transversim 

 rugosa, rugis profundis paullisper undulatis, postice crassioribus, latioribus, irre- 

 gularibus; latere antico late rotundato, semi-elliptico , postico declivi, paullulum 

 attenuato, oblique extremitate terminato; cardo bidentatus, alter unidentatus; 

 sinus pallii profundus, latus, ad apicem subsinuosus; valvae intus pallide violaceae. " 



D i s t r i b. : Mare Lusitanicum. 



Habit. : Alger, rariss. (Weinkauff, Monterosato). 



m 6. Ps. Weinkauffii Crosse (sec. Monter. Ps. rosea Desh.). Testa 

 anguste transversa, subcompressa, subaequilatera (latere postico paullo majore), 

 striis obliquis, ad latus posticum subito evanescentibus impressa, nitidula, albida, 



1 



