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Show 1884.] 'LIGHTNING' AND 'PORCUPINE ' EXPEDITIONS. 357 Turritella potamoides, Cantraine, Melania (afterwards Chemnitzia) pallida, Philippi, Parthenia varicosa, Forbes, and Chemnitzia cost aria, S. Wood. In a specimen from the Gulf of Tunis the throat or inside of the upper lip is crenated, like Chemnitzia costaria of the Crag. 35. ODOSTOMIA MAGNIFICA, Seguenza. Turbonilla magnifica, Seg., Le formazione terziarie nella Provincia di Reggio (Calabria), 1879, p. 264, t. xvi. f. 25. ' Porcupine' Exp. 1870 : Atl. St. 6, 16, 25, 27-28. Distribution. Vigo (McAndrew), Bay of Biscay ('Travailleur' Exp. 1880-1881), off C. Verd I., Azores ('Talisman' Exp.), New England (Ferrill) ; 2! 7-1062 fms. Fossil. Pliocene : Reggio, Calabria (Seguenza) ! This fine species varies considerably in shape, as well as in the number and direction of the ribs, which are sometimes straight and sharp, and in other specimens oblique and flattened ; but there is a character common and peculiar to all the specimens (European, American, and fossil) which I have examined, viz. the close striation length-wise by delicate and microscopical lines which cover the whole of the shell. These striae are not mere marks of growth, but a distinct kind of sculpture. Turbonilla bushiana of Verrill. Not Turbonilla meneghini of Libassi, according to the figure and a typical specimen received from Professor Seguenza; nor is it Turbonilla speciosa of H. Adams. But the last two species are allied to the present, as well as Turbo plicatulus of Broechi. Fragments of recent specimens from the ' Porcupine ' Expedition show that this species attains much larger dimensions than those given in the descriptions of Seguenza and Verrill. 36. ODOSTOMIA LACTEA, Linne. Turbo lacteus, L. S. N. p. 1238; Cantr. Mai. Med. pi. vi. f. 21. O. lactea, B. C. iv. p. 164 ; v. p. 213, pi. lxxvi. f. 3. 'Porcupine' Exp. 1869: St. 9. 1870: Atl. Vigo B.; Med. Algeciras B., G. Tunis, Adventure Bank. Distribution. Tromso to the Archipelago, Adriatic, Marocco, Canary I., Madeira, and Azores ; 0-50 fms. Perhaps this may be Chemnitzia nivea of Stimpson from 40 fms. off Grand Maran, which he described as " T. aciculata, subcylindrica, alba, nitida ; anfractibus planatis, longitudinaliter plicatis, plicis rectis, interstitiis laevissimis. Long. 0*28 ; lat. 0*04 poll." Not Red Sea, as given by Philippi on the authority of Hemprich and Ehrenberg. Fossil. Miocene : Vienna and Bordeaux Basins. Pliocene : Coralline aud Red Crag, Belgian Crag, Biot (Battersby), Nice (Allan), Italy. Post-tertiary : Belfast, Selsea, Leghorn, Taranto, Morea, and Rhodes. Turbo albus, Pennant, T. acutus, Donovan, T. elegantissimus, Montagu, Turbonilla plicatula, Risso, Melania campanillee, Philippi, and several later synonyms which it is unnecessary to notice. Risso's |