1881.] 'lightning' and 'porcupine' expeditions. 719 



Distribution. Drontlieim to Mediterranean, Senegal 1, Japan ; 0- 

 55 fms. 



Fossil. Miocene : Vienna Basin, Switzerland, S.W. France. 

 Upper Tertiaries : British Isles, Belgium, Italy, Rhodes. Post- 

 tertiary : Norway, England and Scotland, Calabria; 0-130 ft. 



Several obsolete synonyms. 



^ 3. Tellina balthica, Linne. 



T. balthica, L. S. N. p. 1120: B. C. ii. p. 375, pi. vii. f. 3 ; v. 

 p. 186, pi. xl. f. 5. 



'Porcupine' Exp. 1869 : St. 9 (valve). 



Distribution. Circuinpolar, Novaya Zemblia, Siberia, Finmark to 

 Mogador, Mediterranean and Adriatic ?, Black Sea, Labrador to 

 Massachusetts, Behring Strait to N, Japan?, Madeira; 0-60 fms. 



Fossil. Post-tertiary : Siberia, Scandinavia, British Isles, Germany, 

 Italy, Canada; 0-1360 ft. 



T. solidula, Pulteney, Psammobia fusca, Say, T. groenlandica, 

 Beck, and other synonyms. 



t^ 4. Tellina calcaria, Chemnitz. 



T. calcarea, Cham. Conch. Cab. vi. p. 140, t. 13. f. 136: B. C. 

 ii. p. 389; v. p. 187. 



'Porcupine' Exp. 1869: St. 65 (fragment). Loch Torridon. 

 Both specimens are semifossil, and were apparently derived from 

 glacial deposits. 



Distribution. Arctic seas in both hemispheres, Scandinavia, N.E. 

 and N.W. America southwards to Boston Bay and N. Japan ; 0- 

 128 fms. 



Fossil. Upper Tertiaries : Iceland Crag, English Crag, Antwerp 

 Crag, Italy. Post-tertiary : arctic regions, Siberia, Scandinavia, 

 British Isles, and northern sea-beds. New Brunswick, Canada ; 

 0-500 ft. 



Synonyms. T. lata, Gmelin, 2\ sabulosa, Spengler, Venus fragilis, 

 Fabricius, T. ovata and T. obliqua, J. Sowerby, T. proxima. Brown, 

 T. sordida, Couthouy, T. inconspicua, Broderip and Sowerby, T. 

 prcetenuis (Leathes), Woodward, and T. mcesta, Deshayes. Some 

 of these may be considered varieties ; but all pass one into another. 



t, 5. Tellina squalida, Pulteney. 



T. squalida, Pult. in Hutch. Dors. p. 29 : B. C. ii, p. 384 ; v. 

 p. 186, pi. xU. f. 3, 3a. 



'Porcupine' Exp. 1869 : St. 9 (valve). 



Distribution. Kullen in S. Sweden and W. Scotland to Jaffa, Adri- 

 atic, Morocco, Madeira, Canaries, and Azores ; 0-49 fms. 



Fossil. Upper Tertiaries : Italy, Madeira. Post-tertiary : Scot- 

 land and Ireland. 



Synonyms. T. depressa, Gmelin, T. incarnata, Poli (not Linne), 

 T. daniliuna, Brusina, 



