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Show 136 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Feb. 19, 9. SCALARIA CLATHRATULA, Adams. Turbo clathratulus, Adams on the Microscope, t. 14. f. 19. •S. clathratula, B. C. iv. p. 96 ; v. p. 210, pi. lxxi. f. 5. ' Porcupine' Exp. 18/0 : Atl. St. 2, 3, 3a, 9, Vigo B., 16 (and var. producta), 17a, 26-29 (and var. spinosa), 30, Tangier B., Gibraltar B.; Med. Benzert Road. Distribution. Bohuslan, Shetland to the Channel Isles, France, Spain, Portugal, Italy, Algeria, Morocco, Madeira, and New England; 0-681 fms. Apparently not Belgium, as stated by M. de Malzine under the name of S. pulchella of Philippi and Kiener. Fossil. Pliocene : English and Belgian Crags, Biot, Nice, Monte Mario, and Messina. Not Miocene, as S. clathratula of Homes, which is evidently a different species. This was confounded by me as well as by many other writers with S. pulchella of Bivona. That species attains to a larger size and is proportionately broader; the ribs are much more numerous and crowded, and their interstices are closely and regularly striated in a spiral direction. Neiiher Bivona nor Philippi noticed the spiral striae. The present species is S. soluta of Tiberi (Journ. de Conch. 1863), and S. dalliana of Verrill and Smith. The variety spinosa from Stations 26 to 29 of the 1870 Expedition has a spine at the top of each rib below the suture. It is analogous to the variety loveni of S. grcenlandica. Other species and varieties are also crested in the same manner. In some specimens of the present species the ribs are more numerous than in others. The variety producta from Station 16 of the same Expedition has a longer spire and twice the usual number of ribs. 10. SCALARIA FRONDOSA, J. & J. D. C. Sowerby. S.frondosa, Min. Conch, vol. vi. (1829), p. 149, t. 577. f. 1. S. soluta, Tiberi in J. de Conch. (1868), pi. vi. f. 3. 'Porcupine' Exp. 1870: Atl. St. 17, 24, 26-29, 36; Med. Rasel Amoush, Adventure Bank, 58. Distribution. Bay of Biscay (de Folin), throughout the Mediterranean (Tiberi and others), off Madeira ('Travailleur' Exp. 1882); 20-547 fms. Fossil. Pliocene : Red and Coralline Crag, and from Piacenza to Ficarazzi in Italy. Probably not the Antwerp Crag as S.frondosa of Nyst. To show the number of synonyms which encumber certain species like the present, being peculiar and not generally known, 1 may instance the fallowing as appertaining to S.frondosa:-S. Celesti, Aradas, S. pumila, Libassi, S. rugosa, Costa, S. crispa, Scacchi (not Lamarck), S. eximia, v. Pecchioli, S. Pecchioliuna, Issel, and & Gruvitellensis, Seguenza, besides S. soluta, Tiberi (1868, not 1863). S. foliacea of Searies Wood appears to be a variety of the present specks. I have already alluded to the possibility of Risso's bad figure of his S. muricata being intended to represent S.frondosa; Risso's publication was three years older than Sowerby's. |