82 Pelecypoda. — Mytilacea. 



ger), le Grrau du Eoi (Clemknt), les Martigues (Monterosato), Toulon, St. Tro- 

 pez (Doublieb), Cannes (Dubreuil, Dautzenberg), Nizza (Risso, V^rany) ; Cor- 

 sica (Payraudeau, Requien) ; Sardinia : Bonifacio (E.olle) ; Spezia (Tapparone- 

 Canefri) ; Livorno (Appelius); Napoli (Scacchi); Sicilia (Philippi, Aradas et 

 Benoit) ; Ustica (Calcara) ; Malta (Mc Andbew) ; Adria : Venezia (Weinkauff), 

 Trieste (Sars), Lissa, Lesina, Curzola, Lagosta, Ragusa (Heller), Dalmatia (Bru- 

 sina), Zara (Sandri, Brusina), Cephalonia (E. v. Martens) ; Morea (Deshayes) ; 

 mare Aegeum (Forbes). 



m 4. Mytilus crispus Cantb. Testa parva, inflata, saepe fere carinata, 

 ovato-oblonga, forma pervariabili, extra nigra aut brunnea, praecipue versus um- 

 bones, peculiari modo granulata aut malleata ; facies interna argenteo-alba , vio- 

 laceo tincta. — Long. 20 mm (Cantraine). 



Habit. : Litora Galloprovinciae (Dubbeuil, Monteeosato), etang de Cette 

 (Weinkauff), PaLavas (Dollfus), etang de Berre (Weinkauff, Dubbeuil), Mar- 

 seille, cap Cavaux, Eatonneau, Maire (Maeion) ; ISfizza (Dubbeuil, Risso); Adria: 

 Ancona (Cantbaine), Venezia (Weinkauff), Zara (Kleciach), Novegradi (Beusina). 



m 5. M. solidus (Maetin Msc.) Montee. „Testa parva, inflata, crassa, 

 rugosa, albida, omnino opalisata" (Monteeosato). 



Habit. : Les Martigues, Palermo, Carini (Monteeosato). 



6. M. variabilis Kbauss. Testa minuta , tumida , ovato-oblonga , rarius 

 -triangula, solida, violacea, antice albida, epidermide fusca, longitudinaliter striata, 

 striis subtilibus ad marginem dichotomis; margine dorsali antice subrecto, postice 

 curvato, ventrali subsinuato ; carina ab apice ad angulum ventralem obtusissima, 

 ab ea ad marginem ventralem declivi; umbonibus recurvis, distantibus; dente 

 cardinali subunico, crasso, dentibus latei^alibus 4 — 5 minimis; linea alba infra 

 ligameutum non porosa ; marginibus crenulatis ; impressione musculari antica car- 

 dinem proxima et ad marginem ventralem oblonga, crassa, postica magna ; intus 

 violacea, antice albida. (Subgen. Aidacomj/a Moech.) — Long. 20 mm, alt. 9 mm, 

 crass. 10 mm. 



Distrib.: Litora orientalia Africae merid., mare rubrum. 



Habit. : Secundum observationem Kelleei species per canalem Suezanum 

 in mare raediterraneum inimigrare coepit: port. Said. 



Modiola Lam. A)mnal ei Mytilornm aequale; testa oblonga, transversa, in- 

 aequilatera, aequivalvis, ante injiata, nmbonihus obtusis, anticis, secl non terminalibus; 

 epidermis saepe pilosa ; cardo edentidus aut antice subcrenulatus ; Ucfamentim lineare, 

 margindle. 



1. M. barbata Lam. {Mytilus barbatm L., 31. villosa Nardo, teste Monter. 

 M. Gibbsii Leach). Testa irregulariter trigona, antice gibbosa, acuta, postice 

 compressa, late et obtuse rotundata, lutescenti-rufa, epidermide crassa lutescenti- 

 fusca, rugosa, foliacea, post et infra distinctissime barbata tecta; margo ventralis 

 rectus aut incurvus, umbones parvi, subterminales ; cardo edentulus. — Long. 40 mm. 



Distrib. : Atlanticum. 



Habit. : Gibraltar (Mc Andeew) , Valencia, Barcelona, ins. balear. : Iviza, 

 Palma, Foruells (Hidalgo); Alger (Weinkauff), Benzert (Jeffeeys) ; litora Galliae| 

 (Petit, Dubeeuil), Roussillon (Locaed), Cette (Geangee), Palavas (Dollfus), i 

 Marseille (Ancey), le Pharo, la Joliette et locis aliis (Marion), Toulon, St. Tro- 

 pez , St. Raphael (Doublier , Gay) , Cannes (Dautzenberg) ; Nizza (V^irany) ; 

 Corsica (Paybaudeau , Requien) ; Sardinia (Mc Andeew) ; Spezia (Tappaeone- 

 Canefbi) ; Livorno (Appelius); Napoli (Scacchi); Sicilia (Philippi, Aeadas et^ 

 Benoit) , Palermo , Carini (Montebosato) , Ustica (Calcaea) ; Pantellaria , litora 



