250 JOURNAL OF CONCHOLOGY, VOL. I4, NO. 8, OCTOBER, I914. 



Triphora arthuri (Jouss.). 

 Jousseaume, Bull. See. Mai. France, 1884, p. 221. 

 T. variegatiis A. Ads., P.Z.S., 185 1, p. 277 (name preoccupied). 

 S. Thome, rare ; West Indies. 



Cerithium guinaicum Phil. 

 Philippi, Abbild., p. 17, pi. i, f. 13. 



S. Thome, common ; Cape Verdes (Nobre) ; Tamara and Libre- 

 ville (Dautzenberg). 



Cerithium atratum Born. 

 Born, Test. Mus. Caes. Vindob., p. 324, pi. 11, f. 17, 18. 



S. Thome, rare ; Cape Verdes (Nobre) ; Baie du Levrier to 

 Loanda (Dautzenberg) ; West Indies. 



Potamides radula (L.). 

 Murex radula Linne, Syst. Nat., ed. x., p. 756. 



S. Thome, common ; Spanish Guinea (Hidalgo) \ Senegal to 

 Mossamedes. 



Fossil : Tinnamaten, Teniejemara, Nouakchott in Senegal (G. F. 

 Dollfus). 



Cerithiopsis tubercularis (Montagu). 



Murex tubercularis Montagu, Test. Brit., p. 270, and suppl., p. 116. 

 Bucquoy, Dautzenberg et Dollfus, Moll, du Roussillon, i., p. 204, pi. 



xxvii., f. 1 — 4. 



S. Thome, not common ; Cansado (Dautzenberg) ; Rio de Oro 

 (Font); Teneriffe and Cape Verdes (Prince de Monaco); Madeira, 

 not uncommon (Watson) ; Norway to Mediterranean ; Port Elizabeth 

 (Sowerby). 



Cerithiopsis minima (Brus.). 

 Cerithium minimum Brusina, Conch. Dal., p. 17. 



S. Thome, rather common ; Madeira (Watson) ; Mediterranean. 



Cerithiopsis bilineata (Hoernes). 

 Ceritlmim hilineatum Hoernes, Tert. Wien, i., p. 416, pt. 42, f. 22. 

 S. Thome, rare ; Mediterranean. 



Cerithiopsis concatenata (Conti). 

 Ceritlmim concatenatum Conti, Foss. di M. Mario (1864), pp. 32, 51. 

 S. Thome, rare; Madeira (Watson); Great Britain to Mediterranean. 



Modulus ambiguus Dautz. 

 Dautzenberg, Contrib. Faune Afr. Occ, I., p. 73, pi. ii., f. 13, 14. 

 S. Thome, rare ; Bilaouak (Dautzenberg). 



