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Show 1884.] 'LIGHTNING' AND ' PORCUPINE ' EXPEDITIONS. 141 Distribution. From Nice to the Archipelago and the coast of Dalmatia, Madeira, and Canaries off Sahara ('Talisman' Exp.); 40-1261 fms. V' Fossil. Miocene : Vienna Basin. S. scacchii of Homes and S. crassilabrum of G. B. Sowerby. Not S. coronata of Lamarck. Although the Report of Prof. Forbes and the second volume of Dr. Philippi's work bear the same date, the former was published in 1843 at the Annual Meeting of the British Association for the Advancement of Science, and appeared in the 'Athenaeum' and other periodicals of that year. I therefore consider that the specific name given by Forbes is entitled to priority. The first whorls in this species, as is mostly the case in the genus Scalaria, are smooth and polished, forming a sharp spike of a reddish-brown colour. 21. SCALARIA CRENATA, Linne. Turbo crenatus, L. S. N. p. 1238; Chemn. Conch. Cab. xi. p. 156, t. 195 A. f. 1880, 1881. S. crenata, G. B. Sowerby, Thesaurus Conchyliorum, i. pi. xxxv. f. 123. 'Porcupine ' Exp. 1870 : Atl. St. Gibraltar B. Distribution. Herm in the Channel Isles, a small and worn specimen (F. C. Lukis) !, Atlantic coasts of France and Spain (de Folin), Mediterranean, Mogador, and Canaries (McAndrew); 3-50 fms. The body of this mollusk is of a yellowish hue mottled with white; the snout or rostrum is thick and strong ; the tentacles are spike-shaped, rather long and slender, of a yellowish colour; the eyes are small and black, seated on a slight prominence near the outer base of each tentacle ; the foot is thick and short. Animal shy or easily alarmed. ACIRSA PR^ELONGA, Jeffreys. (Plate X. fig. 11.) A.preelonga, Jeffr. in Ann. & Mag. N . H . 1877, p. 241. 'Porcupine' Exp. 1870: Atl. St. 16. A single specimen. Distribution. 'Valorous' Exp. St. 12; 1450 fms. Also a single specimen from that Expedition. SUMMARY OF THE FOREGOING LIST. Families. Genera. Number of Species. IX. LITTORINID^ (continued) RISSOA 42 HYDROBIA .... 2 X. PALUDINID^l BITHYNIA 1 XI. HETEROPHROSYNIDiE.. BARLEEIA l XII. SKENEIDJE HOMALOGYRA . . 1 XIII. VERMETIDiE SILIQUARIA. ... 1 |
