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Show 926 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Nov. 29, Little Minch. 1870: Atl. 3, Vigo B., 13, 16, 17a, Setubal B., 24, C. Sagres, 26, 29, 30; Med. 45. Distribution. Iceland and Loffoden I. to Sicily and the Adriatic; 3-400 fms. Fossil. Upper Tertiaries: S. Italy. Post-tertiary: Norway; 0-10 ft. Besides the synonyms given in ' British Conchology,' this species is Erycina fabula of Brusina. B O D Y whitish, with minute flake-white specks : mantle having its edges closely fringed with short but rather stout tentacular processes or cirri, which are studded with tubercular points and are sometimes branched: tubes separate throughout, remarkably long and cylindrical ; incurrent or lower tube microscopically veined lengthwise and marked on the inner side with two white lines; its orifice is furnished with slight tooth-like points ; orifice of excurrent tube contracted when at rest: foot tongue-shaped, thick and expansile. 4. SCROBICULARIA LONGICALLUS, Scacchi. Tellina longicallus, Sc. Notizie, p. 16, t. 1. f. 7. 'Porcupine' Exp. 1869: St. 5, 37, 38, 45-455, Little Minch. 1870 : Atl. 1, 3, 6, 8, 9, Vigo B., C. Sagres, 26-34, 36, Tangier B.; Med. 45, Capo de Gata, 51, 55, Adventure Bank, off Rinaldo's Chair. DistriBution. Loffoden I. to the iEgean and Adriatic, off the Canaries ('Challenger' Exp.), E. Mexico (Blake's Exp.) ; 50-1125 fms. Fossil. Upper Tertiaries : Biot, Italy. Post-tertiary : Norway. Syndosmya tellinella, Seguenza ; in theyounger state Ligula pro-fundissima, Forbes. Philippi misquoted Scacchi's specific name, and called it " longicallis" instead of longicallus, which is more intelligible if not more classical than the other. This shell is larger and more compressed and thinner than S. alBa, is not so oval, and is somewhat flexuous at the posterior side; the cartilage and its pit are elongated and much narrower. In S. alba the pit is spoon-shaped. The lateral teeth are far longer in the present species. Excellent figures of S. longicallus are given in Professor G. O. Sars's work on the arctic Mollusca of Norway. It is also a British species, and was regarded by m e as a large form or variety of S. alba. The range of depth at which S. longicallus has been found living is very remarkable, extending according to the 'Porcupine' Expedition from 20 to 2435 fms. 5. SCROBICULARIA ALBA, W. Wood. Mactra alba, W. Wood, in Linn. Trans, vi. p. 165, t. xvi. f. 9-12. S. alba, B. C. ii. p. 438, pi. viii. f. 4 ; v. p. 189, pi. xiv. f. 3. ' Porcupine' Exp. 1869 : St. 3, North Channel, 40 (var. radiata), near Belfast. 1870 : Atl. Vigo B., C. Sagres ; Med. Cartagena B., 50, G. Bona. Distribution. Finmark to Sea of Marmora, Adriatic, Mogador; 2-400 fms. Bay of Biscay (' Travailleur ' Exp.) ; 504-645 fms. |