1881.] 'lightning' AND 'porcupine ' EXPEDITIONS. 715 



Distribution. Mediterranean from Marseilles to Sicily; 50-190 

 fms. 



Fossil. Upper Tertiaries : Sicily. Post-tertiary : Calabria. 



t^ 5. Venus multilamella, Lamarck. 



Cytherea multilamella, Lam. An, s. Vert. v. p. 581. 



Venus nux, Hidalgo, Moll. mar. Esp. Port, y las Bal., lam. 22. 

 f. 5, 23. f. I. 



'Porcupine' Exp. 18/0: Atl. St. Setubal B., C. Sagres (abun- 

 dant) ; Med. Capo de Gatn, 50, 50 a, Benzert Road, Rasel Amoush, 

 Adventure Bank. 



Distribution. Mediterranean from Algiers to Sicily; 54-120 fms. 



Fossil. Miocene : Vienna Basin, Hungary, Switzerland. Upper 

 Tertiaries : Belgium, S. France, Italy, Algeria, Cos, Rhodes, Cyprus, 

 Madeira. 



Syn. V. rugosa, Brocchi and Bronn (not Linne), V. multilameU 

 losa, Nyst, V. boriji, Deshayes, V. lameUosa, Rayneval, V. cygnus, 

 WeinkauiF (not Lamarck). Gmeliu cites for his V. nux Bonanni's 

 figure of V. verrucosa. 



t' 6. Venus casina, Linne. 



Venus casina, L. S. N. p. 1130: B. C. ii. p. 337; v. p. 184, 

 pi. xxxviii. f. 5. 



'Lightning' Exp.: St. 4. 



'Porcupine' Exp. 1869: St. TheMinch. 1870: Atl. 3 «, Setubal 

 B., C. Sagres, 26, Tangier B. ; Med. Capo de Gata. 



Distribution. Vardo to Mediterranean and Adriatic, Madeira, 

 Canaries; 0-145 fms. 



Fossil. Upper Tertiaries: Great Britain, S. France, Italy, Archi- 

 pelago. Post-tertiary: Norway, England, Calabria; 0-1360 ft. 



K 7. Venus fasciata. Da Costa. 



Pectunculus fasciatus. Da C. Brit. Conch, p. 188, t. xiii. f. 3. 

 Venus fasciata, B. C. ii. p. 334, pi. vi. f . 5 ; v. p. 184, pi. xxxviii. 

 f. 4. 



'Lightning' Exp. St. 5. 



♦Porcupine' Exp. 1869: St. The Minch. 1870: Atl. Vigo B., 

 Setubal B., 22, 26, C. Sagres, 36 ; Med. 50, Adventure Bank. 



Distribution. Havosund near N. Cape to G. Egina, Bosphorus, 

 Adriatic, N. Japan; 0-130 fms. 



Fossil. Upper Tertiaries : Great Britain, S. France, Italy, Rhodes. 

 Post-tertiary: Norway, Calabria; 0-40 ft. 



One of the numerous varieties is V . brongniarti, of Payraudeau, 

 which my friend Mouterosato prefers considering a distinct species. 

 If he were right, other varieties would be equally entitled to specific 

 distinction, and the word variety might be expunged from the 

 dictionary of Natural History. 



46* 



