270 JOURNAL OF CONCHOLOGY, VOL. I4, NO. 9, JANUARY, I915. 



Pecten flabellum (Gmel.). 

 Ostrea fiabelbim Gmel., Syst. Nat., ed. xiii., p. 3321 (1791). 

 Pecten tissotii Bernard, Descrip. d'especes nouv., Jotirn. de Couch., 



vii., p. 91, pi. i., f. 2. 



S.Thome, valves only; Principe (Dohrn); Gaboon (Chatelier) ; 

 Conakry to Congo estuary (Dautzenberg). 



Pecten nodosus (L.). 

 Ostrea nodosa Linne, Syst. Nat., ed. x., p. ir45 (1758). 



S. Thome, several fine examples ; Gulf of Mexico (Reeve) ; Brazil 

 (Sowerby's Thesaurus). 



Melina vulsella (Lam.). 

 Perna vulsella Lamarck, Anim. Sans A^ert, vii., p. 78 (1822). 



S. Thome, fairly common ; Principe (Nobre) ; Loanda and Cape 

 Verdes (Clessin and Nobre) ; West Indies. 



Nobre erroneously describes these shells as Perna isognonmm L, 



Pinna pernula Bolten. 

 Bolten, Mus. Bolt., p. 160 (1798). 



S. Thome, several fine specimens ; Principe, Cape Verdes, and 

 Angola (Nobre) ; St. Helena, Madeira and S. Africa (Smith) ; West 

 Lidies (Chemnitz). This name cannot be credited to Chemnitz as 

 that author was not binomial. 



Mytilus tenuistriatus Dkr. 

 Dunker, Index Moll. Guin., p. 47, pi. 9, f. i — 3 (1853). 



S. Thome, a few specimens ; Loanda (Dunker) ; Conakry, Grand 

 Bassam, Libreville (Dautzenberg). 



Mytilus senegalensis Lam. 

 Lamarck, Anim. Sans Vert., vi., 1st part, p. 122 (18 19). 

 Clessin, Conch. Cab., 2nd ed., p. 38, pi. xi., f. 3 and 4. 



S.Thome, common; Principe, Senegal; Cape Verdes; Baie de 

 Hann, Conakry, Boulbine, Tamara, Los Is., Mossamedes, Praya 

 Amelia (Dautzenberg) ; Benguela (Dautzenberg) ; Spanish Guinea 

 (Hidalgo). Hidalgo^ identifies with this s[)ecies M. variabilis Krauss" 

 from Table Bay, Natal, and Port Ehzabeth. 



Area noe L. 

 Linne, Syst. Nat, ed. x., p. 593 (1758)- 



S. Thome, valves only ; Cape Verdes ; Senegal to Loanda ; West 

 Indies; Panama (v. Ihering) ; Atlantic coast of U.S.A. as far north 

 as Cape Hatteras (Stearns), 



1 Moll, de la Guin. Esp., p. 525. 



2 Sudafi- Moll.,p- 25i pl- 2, f. 5. 



