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Show 116 DR. G W Y N JEFFREYS ON THE MOLLUSCA OF THE [Feb. 19, same as my variety of B. abyssicola, but also satisfied me that latter was another variety of B. testa, which is a much older name than abyssicola. Alvania asperula of Brugnone appears to be the young. B. FLEMINGIA. Ribbed lengthwise and spirally striated ; outer lip thickened and reflected. 14. RISSOA ZETLANDICA, Montagu. Turbo zetlandicus, Mont., in Tr. Linn. Soc. xi. p. 194, t. xiii. f. 3. R. zetlandica, B. C. iv. p. 20 ; v. p. 207, pi. lxvii. f. 1. ' Lightning ' Exp. : St. 2, 5. 'Porcupine'Exp. 1869: St. 13, 14. 1870: Atl. 2, 3, 13, 16, 17a, off C. Sagres, 27, 28 ; Med. Adventure Bank. Distribution. Loffoden I. to the Mediterranean and Adriatic; 12-200 fms. Fossil. 1 Miocene : Vienna Basin ( Homes), Transylvania (Hauer and Stache), Modena (Manzoni). Pliocene : Coralline and Red Crag, Biot, and Italy. Post-tertiary : Norway (Crosskey and Bobertson) ; 100 ft. Among the synonyms are R. carinata of Aradas and R. cana-liculata of Philippi. This species is probably not the R. zetlandica of Homes, which has a shorter spire and more tumid shape, with stronger and coarser sculpture; R. scalaris of Dubois comes nearer to our species. R, crispa of Watson, from Madeira, is more closely allied to R. zetlandica. 15. RISSOA COSTATA, Adams. Turbo costatus, Ad. in Tr. Linn. Soc. iii. p. 65, t. xiii. f. 13, 14. R. costata, B. C. iv. p. 22 ; v. p. 207, pi. lxviii. f. 2. 'Porcupine' Exp. 1870; Atl. St. Vigo B., 26, 36; Med. Adventure Bank. Distribution. Norway, Sweden, Great Britain, and Holland to the Mediterranean and Adriatic, Canaries, and Madeira ; low water at spring-tides to 70 fms. Fossil. Pliocene: Italy and Rhodes. Post-tertiary: Clyde Beds and Selsea. The principal synonyms are R. exigua of Michaud andii!. carinata of Philippi. Not Turbo costatus of Lamarck, which is R. violacea, nor B. costata of Desmarets, which is B. variabilis of v. Muhlfeld. Mediterranean and Teneriffe specimens are smaller than northern specimens. C. RISSOA. Mostly ribbed lengthwise and spirally striated; outer lip usually strengthened by a rib. 16. RISSOA M O N O D O N T A , Bivona. B. monodonta (Biv.), Philippi, Moll. Sic. i. p. 151, t. x. f. 9. 'Porcupine' Exp. 1870 : Med. St. Algeciras B. |