Pectinidae. 73 



Anmsh , lienzeit , Bona (Jkkkreys) ; litoia Galliae ( Dubreuil) , Agde (Petit), 

 Cette (Graxger), Palavas (Dollkus), Aigues-Mortes (Cli^ment), Fos, Les Mai- 

 tigues (Locard), Marseille: Les Goudes, Montredon, Maire (Marion) , Toulon, 

 St. Nazaire, St. Tropez, ins. hyeric. (Gtay, Doiulikr, Dibreuil), Porqueiolles 

 (Locard); Nizza (Risso, VSrany); Corsica (Payraudeau): Spezia (Taim-aroxe- 

 Canekri); Livorno, Pianosa, is. del Giglio (Appelius); Napoli (Scacchi); Sicilia 

 (Philiiti, Aradas et Benoit); prom. S. Yito (Monterosato); Ustica (Calcara); 

 „Adventure Bank'* (Jeffreys); litora Tunetana (MacAndrew, Jekfreys); Adria: 

 Venezia (v. Martens), Trieste (Sars, Grube), Lussin piccolo, L. grande, Nere- 

 sine (Grube), Lesina, Lissa (Heller), Zara (Sandri), Corfu (Reeve); Morea 

 (Deshayes); Cervi (Forbes); mare Aegeiim: Vathy, Amorgo, Paros, Naxia, Lycia 

 (Forbes). 



Nom. vulg- : ^fahon : Xelet (Hidalgo). 



m 7. P. commutatus Monter. (P. PhUippii Ri5cl., nec Mich., F. iiibbus 

 Phil., nec Lam). Testa rotundata, subaequivalvis, turgida, solidula, auriculis 

 valde inaequalibus, costis radiantibus latis, longitudinaliter striatis aut costulis 

 20 — 22 sculpta, interstitiis profundis, angustis, transversim pulcherrime squamoso- 

 himenatis, rarius costis quoque lamellosis; anricuhi anterior parva, costukita, ob- 

 liqua, posterior margine crenato, costis 5 radiantibus lamellosis sculpta, simi 

 byssali parvo angusto; color pervariabilis , plerumque aD)idus, rufo fusco macu- 

 hitus, iuterdum rufo-viohiceus maculis albis, facies interna alba, rosacea aut viola- 

 cea. — Alt. 22 — 2(), long. 23 — 2 7 mm. 



Habit. : Litora Hispaniae (MacAxdrew), Algesiras (Paz), Gibraltar, Carta- 

 gena (Hidalgo); Alger (Weinkauff), Rasel Amush, Benzert (Jeffreys); litora 

 Galliae (Reclu;<), Toulon (Locard); Sicilia (Philippi), prom. S. Vito, Paleriuo 

 (Monteeosato), Palermo, Aci Trezza (Aradas et I^enoit); Malta, Pantellaria 

 (MacAndrew, Aradas et Benoit); litora Timetana (MacAndrew). — (Li mari 

 Adriatico adhuc non reperta est species.) 



8. P. glaber Chemn. {Ostrca (jlabra L., P. (flaber, unicolor, sulcatus, Jiavi- 

 (Itilus, (/risem, distans Lam. , Osfrea citrina , ncbulosa Poli , P. rusticus, citrinus, 

 nebuhsus Risso, 0. i)lic(t Ol., nec L., 0. maculafa Born, P. solaris Chemn., nec 

 lioRN). Testa suborbicuhiris, aequivalvis, aequihitera, auriculis aequalibus, valvis 

 dense minute concentrice striatis, costis 9 — 11 remotis rotundatis, saepe alternis 

 minus prominentibus sculptis, interstitiis radiatim lineatis ; valva dextra cinereo- 

 alba , interdum umbonem versus fusco macuhita , sinistra albida , ttava , citrina, 

 aurantia, coccinea, unicolor aut variegata. — Diam. 4 0^ — 4 2 inm. 



Distrib. : Pontus Euxinus. 



Habit.: Algesiras, Cabo de Gata (Jekkrkys), Gibraltar, Valencia, Beni- 

 carlo (HiDAL(;o); ins. balear. (Favart dHerbigny, Chemnitz, Dillwyn, Ramis), 

 Palnia, Andraitx, Cahi Taulera (Hidalgo), Mahon (MacAndrew, Lacaze- 

 Duthiers, Cardona); Alger (Weinkauff) ; litora Galliae (Petit, Dubbeuil), 

 Roussillon , La Nouvelle (Locabd) , Agde (Petit) , Cette (Grangeb) , Pahavas 

 (Dollkus), Aigues-Mortes (CLttMENT) , Marseille (Ancey , Marion), Toulon , St. 

 Nazaire, St. Tropez, St. Raphael (Doublier, Gay) ; ins. Hyeres, PorqueroHes 

 (Locard); Nizza (Risso, Verany); Corsica (Payraudeau , REiiUiEN) ; Sardinia 

 (MacAxdbew), Bonifacio (Rolle); Spezia (Tapparone-Canefri); Livorno, Elba, 

 Marciana (Appelius); Napoli (Poli, Scacchi) ; Sicilia (Philippi , Abadas et 

 Bexoit), alla Barra (De Gregobio); „Adventure Bank'^ (Jekkbeys); Jlalta, Pan- 

 tellaria (MacAxdrew); litora Tunetana (MacAndrew, De GRK(ioRio [var. (fotiis]); 

 Taranto (De Gre(;orio); Adria: Venezia (Olivi, G. v. Martexs), Trieste (v. Mar- 



