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Show 1881.] 'LIGHTNING'AND'PORCUPINE' EXPEDITIONS. 927 Fossil. Miocene : Vienna Basin. Upper Tertiaries : English and Belgian Crags, S. France, Italy. Post-tertiary : Scandinavia, British Isles, Calabria, Rhodes ; 0-460 ft. There are many synonyms, including Tellina apelina of Renier, Mactra boysii of Montagu, and Erycina renieri and E. similis of Philippi. Renier never described this species. He seems to have taken the name apelina from Gmelin, who altered it from opalina of Chemnitz, a very different shell said to inhabit the Nicobar Isles. 6. SCROBICULARIA PRISMATICA, Montagu. Ligula prismatica, Mont. Test. Brit. Suppl. p. 23, t. 26. f. 3. S. prismatica, B. C. ii. p. 435 ; v. p. 189, pi. xiv. f. 1. 'Porcupine' Exp. 1869: St. 6, 14, 23«, 25, North Channel, 33, 35, 40, 51, 68. 1870 : Atl. 10, 16 ; Med. 50, G. Bona, Benzert Road, G. Tunis, Adventure Bank. Distribution. Iceland and Hammerfest to the iEgean and Adriatic ; 0-150 fms. Fossil. Upper Tertiaries : Coralline and Red Crag, Belgium, Biot, Italy. Post-tertiary : Norway, Scotland, Calabria. Tellina ungulosa of Renier, but not described, nor Gmelin's species of that name ; T. stricta, Brocchi, Ligula donaciformis, Nyst, and Erycina vitrea, Danilo and Sandri. Family XVII. SOLENIDJE. 1. SOLECURTUS SCOPULA, Tlirton. Psammobia scopula, Turt. Conch. Brit. p. 98, pi. vi. f. 11, 12. (1822). S. candidus, B. C. iii. p. 3 ; v. p. 190, pi. xlvi. f. 1. ' Porcupine' Exp. 1870 : Med. St. 50. Distribution. Shetland Is. to the Morea, Adriatic, Madeira, Canaries ; 0-80 fms. It has not been noticed in that part of the Norwegian seas which is in the same latitude as Shetland. l^ossil. Upper Tertiaries: Belgium, Italy. Post-tertiary : Scotland, Rhodes. I give a fuller description of the animal:-BODY dirty white, with a faint tinge of brown : mantle thick, protruded beyond the valves of the shell; edges finely and minutely ciliated: tubes united in a fleshy sheath to within a short distance from their extremities, where they diverge and become strangulated or corrugated ; both tubes are finely ciliated in longitudinal rows; orifices fringed with short papillae; the incurrent or larger tube is sometimes speckled with orange towards the point; the excurrent tube is somewhat narrower, but often longer than the other ; the tubes vary in their relative length: foot tongue-shaped, very thick and fleshy. Inhabits the sand at low-water mark, Herm. I must repeat my doubt that the Solen candidus of Renier was this species, or any thing more than a white variety of Solecurtus slrigilatus. Renier's specific name has not been adopted by later writers on Mediterranean conchology. Scacchi in 1836 described |