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Show 1881.] 'LIGHTNING' A N D 'PORCUPINE' EXPEDITIONS. 945 Distribution. Hammerfest to the iEgean ; coast of Syria and of Marmora, Adriatic, Mogador, Canaries; 0-130 fms. Fossil. Miocene : Vienna Basin and the greater part of the European continent, Calabria, "America" (Lyell)l Pliocene: Coralline and Red Crag, Belgium, S.W. and S. France, Lisbon, Italy, Algeria, Greece, Kos, Crete, Rhodes, and Cyprus. Post-tertiary: Norway, Sweden, British Isles, Calabria; 0-1360 ft. Not C. giBBa of Philippi, from N.W. Germany, nor C. striata of Lamarck, which is an Eocene fossil from Grignon. Mr. Searles Wood adopted as a specific name striata of Walker and Boys; hut that was a sentence, and not a name in accordance with the binomial method. There are many other obsolete synonyms. 2. CORBULA MEDITERRANEA, Costa. G. mediterranea, O. G. Costa, Descr. Test. Sic. 1828, p. 182 ; Cat. Sist. 1829, p. xxvi, t. 1. f. 6 : B. C. iii. p. 58 ; v. p. 192, pi. c. f. 8. ' Porcupine ' Exp. 1870 : Atl. 26, Tangier B. ; Med. Algesiras B. Distribution. Cork and Guernsey (valves only), Mediterranean and Adriatic; 20-120 fms. Fossil. Pliocene: Sicily. Post-tertiary : Isle of Bute, Calabria. Syn. Tellina parthenopaa of D. Chiaje (Philippi), and C. phy-soides of Deshayes. G. ovata of Forbes, which is closely allied to the present species, is the same species as C. amurensis of Schrenck, and perhaps C. lavis of Hinds. The late Dr. Mbrch informed me that Prof. Kroyer had found two specimens of the last-mentioned species at Christiansund, and that specimens (kindly sent m e by Morch) were from the collection of Fabricius, who might have taken them either in Greenland or Norway. Fabricius was a clergyman, and had the charge of a parish in Norway after he had been a missionary in Greenland. Forbes's specimen may have come from one of the glacial deposits in the Isle of Man, which have been described by the Rev. J. Clifton Ward in the ' Geological Magazine ' for January 1880. Family XXI. MYID,E. 1. M Y A TRUNCATA, Linne. M. truncata, L. S. N. p. 1112: B. C. iii. p. 66, pi. iii. f. 1 ; v. p. 192, pi. 1. f. 2. 'Porcupine' Exp. 1869: St. Donegal B., 70 (var. uddevallensis, a semifossil valve). Distribution. Circumpolar in the northern hemisphere, ranging southwards in the N . Atlantic to S.W. France on the east and to Cape Cod on the west, and in the N. Pacific to N . Japan on the east and Vancouver I. on the west, Tuscany?, Adriatic?, Black Sea?; 0-1333 fms. Living down to 80 fms.; at the greatest depths valves only from the walrus or cod. Fossil. Pliocene : English Crag. Post-tertiary : from Spitzber-gen and Siberia to Sicily on the east, aud from N. lat. 82° 35' to Canada on the west; 0-1360 ft. PROC. ZOOL. Soc-1881, No. LXI. 61 |