1834.] ' lightning' and ' roitcui'i nk ' expeditions. 131 



V 1. TURRITELLA TEREBKA, Lilllie. 



Turbo terebra, L. S. N. p. 1239. 



Turritella terebra, 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, 23a, 25, 63. 

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

 Vigo B., 13, 10, Setubal B., 22, 25, 26, off C. Sagres, 30-34, Tan- 

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

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

 off Rinaldo's Chair, 58. 



Distribution. Abundant throughout the coasts of the European 

 seas from Loffoden and the Faroe Isles southwards to the Mediter- 

 ranean and Adriatic, as well as of Marocca, Algeria, and Tunis ; 

 3-100 fms. 



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

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

 Cos; 0-13-50 ft. Not T. terebra of Philippi from the Cassel ter- 

 tiaries, which is T. yeinitzi of Speyer. The fry of the present 

 species was referred by Costa to the extinct genus Murchisonia. 



Synonyms. Turbo tricarinatus of Brocchi (not Turritella tricari- 

 tiata of King), Turritella 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 strise. The apex is bulbous and somewhat iutorted. 



2. Turritella incrassata, James Sowerbv. 



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

 t. 51. f. 6. 



T. triplicata, Reeve, Icon. Couch. (Turritella), pi. ix. f. 43, a, b. 



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

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

 Bank (and var. bicincta), 58. 



Distribution. Western coasts of France and Spain, Mediterranean, 

 Adriatic, and Canaries ; 6-150 fms. Heligoland (Leuckart)l 



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

 and Belgian Crags (and var. bicincta), 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 variety turbona of Mouterosato), 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 suttjralis, Forbes. 



Turritella suturalis, Forb. Rep. iEg. Inv, (1843), p. 189. 

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



f. 2b 



'Porcupine' Exp. 1870: Atl. St. C. Sngres, Tangier B. ; Med. 



9* 



Algeciras B 



