TOMLIN AND SHACKLEFORD : MARINE MOLLUSCA OF S. THOME. 273 



Cardium ringens Gmel. 

 Gmelin, Syst. Nat., ed. xiii., p. 3254 (1791). 

 Reeve, Conch. Icon., pi. i., f. 6. 



S. Thome, valves only ; Cape Verdes (Stearns); Principe (Nobre) ; 

 a well-known and widely distributed West African species from Cape 

 Blanco to Mossamedes. 



Cardium (Laevicardium) aeolicum Born. 



Cardium aeolicum Born, Mus. Caes. Vindob. Test., pt. i., p. 36 (i 780). 

 S. Thome, valves only ; Cape Verdes (Nobre) ; Angola (Welwitsch). 



Papyridea soleniformis (Brug.). 

 Cardium soleniforme Bruguiere, Encycl. Method., I., p. 235 (1789). 



S. Thome, not uncommon ; Cape Verdes (Dunker and Nobre) ; 

 Azores and St. Helena (Smith); West Indies, Brazil and W. coast of 

 Central America (Smith). 



For synonymy see 'Challenger' Lamellibranchiata, p, 161. 



Smith records Linne's Solen Imllatus as indeterminable. This name 

 invalidates Solen bullatus Chem., even if the latter were strictly 

 binomial. The next available name seems to be that of Bruguiere. 



Chama crenulata Lam. 

 Lamarck, Anim. Sans Vert., vi., ist pt., p. 94 (1819). 

 C. senegalettsis Rve., Conch. Icon., pi. ii., f. 5. 



S. Thome, rare ; Cape Verdes ; Principe ; Goree, Port Etienne, 

 Cansado, C, Timiris, Manata, between Lemsid and Bilaouak, between 

 Rufisque and Hann, B. of Rufisque, and W. of Cape Rouge (Dautzen- 

 berg) ; Whydah (Smith) ; Conakry (Rattray). 



Basterotia oblonga Smith. 

 Smith, P.Z.S., 1890, p. 303, pi. 22, f. 5. 

 S. Thome, valves only ; S. Helena (Smith). 



Meretrix (Pitaria) roemeri (Tomlin & Shackleford). 



Pitaria roemeri 'YowXxw & Shackleford, yj-'/zr//. of Couch., vol. 14, p. 96 

 (1913)- 

 S. Thome, rare ; Principe (Romer). 



Venus casina L. 



Linne, Syst. Nat., ed. xii., p. 1130 (1767). 



S. Thome, valves only; Whydah (Smith); Senegal (Sowerby) ; 

 Madeira, very abundant (McAndrew) ; Cape Verdes (Nobre) ; 

 Canaries, frequent (McAndrew); Norway to Mediterranean. 



