— 314 — 



La Calcinelle Adaiison Senegal T. 17, F. 14. 



Mactra hispanica Chemnitz Conch. Cab. VI T. 3, F. 21. 



Mactra piperata Gmelin efl. 13 p. 32(J1. — (Lutr.) Desh. Lam. VI 



p. 92. — (Scrob.) Philippi Ennm. I p 9. — Forbes et Hanley I 



p. 326 T. 15, F. 5. - Sow. III. Ind. T. 3, F. 18. - Jeffreys Br. 



Couch. II p. 444 T. 45, F. 5. — Monterosato Enum. p. 14. — 



Locard Cat p. 405. — Monteros. Noniencl. p. 27. 

 Trigonella plana da Costa Br. Conch. p. 200 T. 13, F. 1. — Des- 



hayes Exp. sc. Algerie T. 44—46. — (Scr.) Weinkauff Mittelm. 



p. 56. 

 Solen callosus Olivi fide Monteros. 

 Mactra compressa Pulteney Dorset Cat. p. 31. — (Lutr.) Lam. VI 



p. 91. 

 Mactra Listeri Gmelin ed. 13 p. 3261. 



Scrobicularia arenaria Schum Nouv. Syst. p. 127 T. 8 F. 3 

 Mactra Listeri Gmelin ed. 13 p. 3261. - Tnrton Dict. p. 83. 

 Lavignon calcinella Eecluz in Chenu F. 8. 

 Venus borealis Penn, Ven. gibbula Gmel. 



Hab. mare mediteiraneum et oceauum atlanticum. 



2. Scrobiculaiia Cottardi Payraudeau T. ovali- 

 trigona, compressa, pellucida, nitida, subaequilatera, albo-liaves- 

 cens, posterius rotundata, anterius angulata; sub cuticula alba 

 concentrice leviter striata. — Long. 30—35 Mm. Payr. 



Lutraria Cottardii Payraudeau Corse p. 28 T. 1, F. 1,2. — Philippi 



Euum. I p. 10. — Weinkauff Mittelm. p. 59. — Locard Cat. 



p. 406. 

 Amphidesma sicula Sowerby Conch. III. F. 24. — (Ligula) Forbes 



Kep. p. 142. 

 Var. = Scr. subangulata Monteros. Noniencl. p. 28. 



Hab. Mare raediterraneum. 



? 3. Scrobicularia rubiginosa Scacchi (Am])hi- 

 desma) Cat. p. 5 teste Monterosato Nomencl. p. 27 (Teste 

 Weinkauff = Syndosmya ovata). 



Hab. Lago di Fusaro prope Neapolin. 



6. Genus Mesodesma Deshayes. 



T. ovata, transversa vel triangularis, crassiuscula, clausa; 

 cardo Ibvea ligamentali mediana angusta prominula et dentibus 

 2 oblongis, siiiiplicibus in utraciue valva; ligamentum internum. 



Mesodesma cornea Poli. T. ovato-trigona , crassa, 

 transversa, inaequilatera, postice brevior omnino clausa, margine 

 integro, laevis, tenuissime transversim striata, luteo-albida vel 

 lutea, plerumque fusco varie radiata et strigata, colore per- 

 variabili; cardo dentibus in valv. sinistra 3 4, postico multo 

 majore; sinus pallialis parvus, ovatus. — Long. 20 Mm. 



Mactra cornea Poli Test. Sic. T. 19, F. 8-11: - (Mes ) Petit 



J. C. II p 295. Forbes et Hanley I p. 348. — Eeeve sp. 1. 



— Weinkauff Mittelm p. 50. — (Donacilla) Monteros. Nomencl. 



p. 27. 

 Donax plebeja Penuant Br, Zool. IV p. 199. 



