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Show 346 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [May 20, lip spread on the pillar and continuous with the outer lip ; there is no umbilicus or chink: tooth sunken, mostly observable in half-grown specimens. L. 0*1. B. 0*05. < Porcupine ' Exp. 1869 : St. 4. 1870 : Atl. 9,13, 26-34 ; Med. 40, 55, Adventure Bank. Distribution. Bay of Biscay ('Travailleur' Exp. 1880 & 1881), off the Tunisian coast (Nares), Messina ( Granata), off C. Verd. I. (' Talisman' Exp.); 30-1192 fms. By comparing the above description of this species with those of other species belonging to the present section which are given in the fourth volume of ' British Conchology,' the difference will be easily seen. Some conchologists, for whose opinion I have a great esteem, believe that I have too much restricted the number of species; but I have conscientiously endeavoured to preserve the "juste milieu" in that respect. 4. ODOSTOMIA UNIDENTATA, Montagu. Turbo unidentatus, Mont. Test. Brit, (ii.) p. 324. O. unidentata, B. C. iv. p. 134; v. p. 211, pi. lxxiv. f. 1. ' Lightning' Exp. St. 2, 4, 5 (var. elata). ' Porcupine' Exp. 1869 : St. 2. 1870 : Atl. 3a, 9, off C. Sagres, Tangier B. ; Med. Benzert Road. Distribution. Iceland, Hammerfest and Vadsd to the eastern coasts of the Mediterranean, western coasts of Africa (' Talisman' Exp.), Canaries and Madeira, Pernambuco (' Challenger' Exp.) ; 10-777 fms. Fossil. Pliocene : Red Crag, Calabria ; Post-tertiary : Norway, Scotland, and Ireland; 8-460 ft. Not O. unidentata of Philippi from the Tertiaries of N . W . Germany. Besides the synonyms given in ' British Conchology,' I would observe that O. monterosatoi of the learned authors of the marine mollusca of Roussillon appears to be tbe young of the present species, judging from typical specimens kindly submitted by M. Dautzen-berg to m y examination. 5. ODOSTOMIA TURRITA, Hanley. O. turrita, Hani, in Proc. Z. S. pt. xii. p. 18: B. C. iv. p. 135, v. p. 211, pi. lxxiv. f. 2. •Lightning' Exp. St. 4, 5. ' Porcupine' Exp. 1870 : Med. 55, Adventure Bank (var. nana). Distribution. Vadso and Lofoten I. to Hydra Channel in the Gulf of Egina and the Adriatic, Madeira and Teneriffe (var. nana), Pernambuco (' Challenger' Exp.) ; 0-350 fms. Fossil. Post-tertiary: Norway and Lochgilp (Crosskey and Robertson) ; 3-240 ft. O. turriculata of Monterosato seems to be another variety of this species. Mr. Pidgeon observed this species at Torquay feeding on the polyparies of a Lepralia. |
