| OCR Text |
Show 658 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [ Nov. 14, gium to the Adriatic, and thioughout the Mediterranean to Smyrna; 0-543 fms. Fossil. Miocene: Belgium, Piacentino and Parma. Upper Tertiaries : S. France, Italy. Post-tertiary : Ireland, Lancashire, Cheshire, S. France, and Tuscany. Synonyms several, including D. fasciatum and perhaps D. nebu-losum of Gmelin, and the D. entalis of most continental writers as well as of E. Forbes. As fossil it is D. fusticulus of Brugnone. D a Costa's name vulgare is certainly prior to Lamarck's name; but it would be inconvenient now to substitute it for tarentinum, which has been for between sixty and seventy years accepted and used by nearly every conchologist. The stomach of this Dentalium is a repertory of littoral Forami-nifera. It is not, like Spatangus or Synapta, an indiscriminate swallower of sand, but a fastidious Pig from the herd of Epicurus, luxuriously picking out the choicest morsels with its extensile and delicate captacula. Adriatic specimens of the shell collected by Professor Stossich are 2\ inches in length and very fine. 4. DENTALIUM CAPILLOSUM, Jeffreys. (Plate XLIX. fig. 1.) D. capillosum, Jeffr. in Ann. & Mag. N. H . Feb. 1877, p. 153. 'Porcupine' Exp. 1879 : St. 47. 1870: Atl. 13, 16, 17. Distribution. G. Mexico, off Bahia Honda (Pourtales), ' Challenger 'Exp., off the Azores, 'Valorous' Exp. ; 418-1785 fms. Differs from D. tarentinum in being proportionally narrower and more uniformly cylindrical, straighter and not abruptly curved towards the point, and in the close-set striae which completely and regularly cover every part of the shell, instead of being much finer on the smaller or posterior part. Fragments from the ' Valorous ' Expedition show that it grows to a much larger size than any other North-Atlantic species. In the 'Travailleur' Expedition of 1882, several living specimens were dredged between Lisbon and the Canaries, of an extraordinarily large size and thickness, and having a long terminal slit. 5. DENTALIUM CANDIDUM, Jeffreys. (Plate XLIX. fig. 2.) D. candidum, Jeffr. in Ann. & Mag. N . H. Feb. 1877, p. 153. ' Porcupine' Exp. 1869: St. 16, 21, 23, 23a, 28, 31, 37, 38. Distribution. 'Valorous' Exp. ; 410-1750 fms. Some fragments are of an extraordinary thickness. 6. DENTALIUM AGILE, M. Sars. D. agile (M. Sars), G. O. Sars, ' O n some remarkable forms of Animal Life from the great deeps off the Norwegian coast,' i. 1872, p. 31, pl. iii. f. 4-15. 'Porcupine' Exp. 1869: St. 3, 5, 6, 7, 11, 13, 14, 15, 36, 39, 41, 45, 65. 1870: Atl. 1, 2, 3, 3a, 13, 16, 17 (very thick), Setubal B., off C. Espichel, 22, 24-34; Med. 40, 55, Adventure Bank. Distribution. Loffoden I. to Bergen coast (Sars and others), |
