74 Pelecypoda. — Pectinacea. 



TENS , Gbube) , Zara (Sandei) , Novegradi (Bkusina) ; Morea (Deshayes) ; mare 

 Aegeum, Smyrna (Foebes). 



Nom. vulg. : Malion: Xelet (Hidalgo); Venezia, Istria: Canestrelli (G. 

 V. Maetens); litora Dalmatina: Cape piere piccole (Brusina). 



Weinkauff distinguit: Var. B. plicis 11 laevibus, alternis minoribus (P. glaber 

 Lam.); var. C. plicis 9 — 11 sulcatis, testa subaequivalvis (P. suleatus Lam., Payr., solaris 

 PoLi, griseus, distans Payr., unicolor, rusticus, nebulosus, citrinus Risso, griseus Desh.); 

 var. D. plicis 9 — 11 aequalibus, parum striatis, valva dextra plana (P. unicolor Sow.); 

 var. E. plicis 11 striatis alternis minoribus (P. sidcatus Sow., P. glaber Chemn. , Reeve). 



m 9. Pecten proteus Solandee (P. glaher var. Mtesto.). Testa sub- 

 quadrato-orbicularis, tenuiuscula, sericina, modice convexa, aequivalvis, aequilatera, 

 densissime subtilissimeque concentrice striata, quinquecostata, interstitiis radiatim 

 subobsolete lineatis, costis latis tumidis, paullo elevatis, remotis; grisea, unicolor 

 aut albo fuscoque variegata, aut rufa, aut violacea; valva dextra pallidior; auri- 

 culis subaequalibus. — Diam. 50 mm. 



Habit. : Adria: Venezia, Zara (v. Maetens), PLussin grande (Grube). 



m 10. P. anisopleurus Loc. (P. glaher Eeeve p.). Testa ovata, de- 

 pressa , subaequivalvis , subaequilatera , auriculis inaequalibus , sinu byssali per- 

 parvo, valva superior costis 11 — 12, quinque earum fortioribus, paullum rotnn- 

 datis, angustis, valva inferior costis 12 — 14 subaequalibus, facie interna undulata, 

 24—26 cristis notata. — Alt. 32—45, long. 31—43 mm. 



Habit. : Litora Galloprovinciae, Cette, Marseille, Toulon (Locabd), 



11. P. septemradiatus Lov. [Ostrea septemradiata 0. F. Mull., P. pseuda- 

 mussium Chemn. , VO. pes-lutrae L. , 0. pes-hitrae Morch, P. danicus Chemn., 

 P. triradiatus 0. F. Mull.). Testa oblique suborbicularis , tenuis, subaequivalvis, 

 radiatim plicata, plicis 5 — 9 latis, rotundatis striisque radiantibus tenuibus mar- 

 gines versus magis conspicuis sculpta, interdum laeviuscula; dilute rubicunda aut 

 aurantiaca, albo variegata, valva dextra pallidior; auriculae leviter inaequales, 

 anteriore majore; sinus byssalis minimus. — Long. 45 mm. 



Distrib. : Atlanticum boreale; Propontis. 



Habit. : 20^ — 660 ped. prof. : Cabo de Gata (Jeffeeys) ; Bona, Benzert, 

 Rasel Amush (Jeffeeys); Marseille, Peyssonel (Maeion), Toulon (Gay) ; „Ad- 

 venture Bank", Tunis (Jefpbeys) ; mare Aegeum (Jeffreys). 



m 12. P. flexuosus Lam. {Ostrea flexuosa Poli , 0. plica Poli , nec L., 

 P. polymorphus Phil., P. isaheUa, Jtagellatus Lam. , P. plicatidus Eisso, P. undu- 

 latus Sow.). Testa rotundato-subquadrata , solidula , flabelliformis , plus minusve 

 convexa, aequilatera, aequivalvis, valvis subtilissime concentrice striolatis, radia- 

 tim lineatis, valva sinistra plicis 5 — 10, dextra 6 — 12 rotundatis sculpta; color 

 pervariabilis ; auriculae subaequales, radiatim costulatae ; margo cardinalis antice 

 in valva dextra squamosa. — Diam. 33 mm, alt. 30 mm. 



Hab. : 2 — 110 org. ; Algesiras (Paz), Gibraltar, Cartagena (McAndbew^), 

 Valencia, Aguilas, Benicarlo, Rosas, Mataro, Barcelona (Hidalgo) ; ins. balear. : 

 Conejera (Mc Andeew) , Ciudadela , cabo Bajole , isla del Aire , Menorca , Mahon 

 (HiDALGo); Alger (Weinkauff), Benzert, Easel Amusli (Jeffeeys); Cette (Gbangee), 

 Aigues-Mortes (Cl^ment), Marseille, la Joliette, Carry, Eatonneau, Cap Cavaux, 

 Montredon, Mejean (Marion), Toulon (Locard) ; Nizza (Eisso) ; litora pedemontana 

 (Jeffreys) ; Corsica (Payeaudeau , EEt^TiEN) ; Sardinia (Mc Andbew) ; Spezia 

 (Tappaeone-Canefei) ; Napoli (Poli, Scacchi, Aeadas) ; Sicilia (Philippi, Abadas 

 et Benoit; var. alterninus et gasus De Gbegobio), prom. S. Vito (Montebosato), 

 Messina (Seguenza) ; Ustica (Calcaea) ; Malta, Pantellaria (Mc Andbew) ; litora 

 Tunetana (McAndrew); Adria: Venezia (Weinkauff) , Zara (Brusina); Morea 



