1834.] ' lightning' AND ' I'ORCU PI NIC ' EXl'KDITIONS. 131 



\/ 1, TURRITELLA TEREBRA, Liliue. 



Turho terehra, L. S. N. p. 1239. 



Turritella tercbra, B. C. iv. p. 80, pi. ii. f. 1 ; v. p. 209, pi. Ixx. f. 6. 



•Porcupine' Exp. 1869: St, 1, 6, 9, 13, 14, 15, 18, 23rj, 25, 63. 

 TheMinch, Little Minch, Loch Torridoii, off Lerwick. 1870: Atl. 12, 

 Vigo B., 13, 10, Setubal B., 22, 25, 25, off C. Sagres. 30-34, Tan- 

 gier B. ; Med. 45, Capo de Gata, Cartagena B. (and var. gracilis), 

 50, 55, Benzert Road, Rasel Auioush, G. Tunis, Adventure Bank, 

 off Rinaldo's Cliair, 58. 



Distribution. Abundant throughont the coasts of the European 

 seas from Loffoden and the Faroe Isles southwards to the i\Iediter- 

 raneari and Adriatic, as well as of Marocco, Algeria, and Tunis ; 

 3-100 fms. 



Fossil. Pliocene : Biot, and Italy. Post-tertiary : Sweden, Great 

 Britain and Ireland, S.W. France, Leghorn, Morea, Rliodes, and 

 Cos; 0-1350 (t. Not T. terebra of Philippi from the (tassel ter- 

 tiaries, which is 7'. geinilzi of Speyer. The fry of the present 

 species was referred by Costa to the extinct genus Murchisonia. 



Synonyms. Turbo tricarinaius of Brocchi (not Turritella tricari- 

 tictta of King), Tm-ritella communis and other so-called species of 

 Risso, and perhaps also Turbo ungulinus of Linne. 



Extremely variable as to the number and proportionate size of the 

 spiral ridges or striae. The apex is bulbous and somewhat intorted. 



2. Turritella incrassata, James Sowerby. 



T. incrassata. Sow. Min. Conch. Gt. Brit. (1812), vol. i. p. Ill, 

 t. 51. f. G. 



T. tripUcata, Reeve, Icon, Couch. {Turritella), pi. ix. f. 43, a, b. 



'Porcupine' Exp, 18/0: Atl. St, 3a, Vigo B,, 16, Tangier B,, 

 Gibraltar B. ; Med. 50«, Benzert Road, Rasel Amoush, Adventure 

 Bank (and var. bieincta), 58, 



Distribution. Western coasts of France and Spain, Mediterranean, 

 Adriatic, and Canaries ; 6-150 fms. Heligoland (£eMc^'a?Y)? 



Fossil. Miocene : Maine-et-Loire {Bardin). Pliocene : English 

 and Belgian Crags (and var. bieincta), S.W. and S. France, Italy. 

 Post-tertiary: "Glacial beds of Wexford, not rare" (Forbes)'?, 

 Cornwall (S, V. Wood ; specimens nearly as large as those of the 

 recent vnnety turbona of Monterosato), Leghorn, Rhodes, and Cyprus. 



There are a few synonyms, besides Turbo triplicatus and other 

 species of Brocchi. 



One recent specimen, which had been repaired in the middle of 

 the spire, had only a single ridge or keel on the last two whorls. 



Mesalia sxjturalis, Forbes. 



Turritella sufuralis, Forb. Rep. Mg. Inv, (1843), p. 189. 

 Mesalia brevialis, Reeve, Icon. Coucli. (Mesalia), pi. i. f. 2a, not 



f. 2i. ■,'>;; -\„: 



'Porcupine' Exp. 1870: AtL St. C. Sagres, Tangier B. ; Med. 

 Algeciras B, 



