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Show 1881.] ' L I G H T N I N G ' A N D ' P O R C U P I N E ' E X P E D I T I O N S . 929 DistriBution. Finmark and Faroe Is. to Sicily, Adriatic, Black Sea ; 0-23 fms. Philippi, in his letter to Scacchi, dated 2nd Nov. 1844, stated that this species, as well as S. siliqua, from the German Ocean and North Atlantic, were probably different from those of the Mediterranean ; but he gave no reason for his opinion. Fossil. Miocene : Madeira. Upper Tertiaries: Iceland, Coralline and Red Crags, Belgium, Italy. Post-tertiary: Norway, British Isles, Calabria; 0-80 fms. Not 8. ensis of Philippi, from the Tertiaries of N . W . Germany, which is the 8. rollei of Homes. Mr. David Robertson tells me that, during a very low spring-tide at Cumbrae, he found three living specimens fixed upright in the sand, with about an inch and a half of the shells exposed, to which portion in each of the specimens two or three common mussels were attached, so as to completely prevent the Solens getting further down or burrowing. They appeared to be healthy. 3. SOLEN VAGINA, Linne'. 5. vagina, L. S. N. p. 1113: B. C. iii. p. 20 ; v. p. 190, pi. xlvii. I* O. 'Porcupine' Exp. 1870: Atl. C. Sagres, 26 (fragments). DistriBution. Norway to Egypt, Black Sea, Adriatic, Red Sea?, Azores ; 0-10 fms. Fossil. Miocene: Vienna and Bordeaux Basins, Switzerland, Poland, Calabria. Upper Tertiaries: S. France, Italy, Algeria. Post-tertiary : Belfast, Sicily, Morea. S. marginatus, Pulteney. The habitat given by Linne is " M. Europeeo, Indico." The Indian species has been named S. truncata by W . Wood. Family XVIII. PANDORID^E. P A N D O R A IN.EQ.UIVALVIS, Linne. Tellina inaquivalvis, L. S. N. p. 1118. Pandora inaquivalvis, B. C. iii. p. 24, pi. i. f. 4 ; v. p. 190, pi. xlviii. f. 1, la. 'Porcupine' Exp. 1869 : St. 1, 6, 10, 13, 14, 23a, 25, 45a, 45-5, Little Minch (all var. pinna). 1870 : Atl. 16, Vigo B., 13, Setubal B., C. Sagres, Tangier B.; Med. Algesiras B., Cartagena B., G. Bona, G. Tunis, Adventure Bank (all vars. pinna and intermedia). DistriBution. Spitzbergen and Arctic Ocean, Siberian coasts, and N.E. America (as P. glacialis) to the ^Egean, Adriatic, Mogador, Madeira, and Canaries (as P. inaquivalvis and P. pinna or oBtusa); type, laminarian zone ; vars. glacialis and pinna or oBtusa, coralline zone to 130 fms. A n intermediate form occurs on the western coast of France and at Corunna. Although this species is not uncommon off the coasts of Shetland, it has not been noticed by modern writers in any part of the Scandinavian seas. Chemnitz said that, according to Gronovius, it inhabits tbe coast of Norway. Fossil. Miocene: Vienna Basin and Switzerland. Pliocene: Co- PROC. ZOOL. SOC.-1881, No. LX. 60 |