| OCR Text |
Show 36 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [J 17. NATICA FLAMMULATA, Requiem N.fiammulata, Req. Cat. Coq. Corse (1848), p. 61. N. sagraiana, Hidalgo, Mol. mar. de Esp. lam. -6 A. f. 5-7 (opt.). 'Porcupine' Exp. 1870: Atl. St. off C. Sagres, Tangier B. ; Med. Cartagena B., 50, 50 a, Benzert Road, Rasel Amoush, Adventure Bank. Distribution. Gulf of Gascony, Cadiz, throughout the Mediterranean, Cuba, Madeira and Canaries ; 20-120 fms. Fossil. Pliocene : Calabria and Sicily. N. filosa, Philippi (1852), but not of Reeve, N. sagraiana, d'Orbigny (1854), and perhaps Nacca fulminea of Risso, but not Nerita fulminea of Gmelin. The specific name ought strictly to hejlammula or flammeola, instead of flammulata, which is not a Latin word. 18. NATICA MARMORATA, H. Adams. N. marmorata, H. Adams, in Proc. Zool. Soc. 1869, p. 274, pi. xix. f. 8. N. prietoi, Hidalgo, Mol. mar. de Esp. lam. 20 B. f. 2, 3 (opt.). ' Porcupine ' Exp. 1870 : Med. St. Cartagena B. Distribution. Algiers (Weinkauff), Minorca (Hidalgo), Palermo (Monterosato), Adventure Bank (' Shearwater ' Exp.) ; 16-120 fms. Canary I. (MeAndrew) ; 30-120 fns. Not Nacca marmorata of Risso, which appears, from the description, to be Natica imbricata. The sculpture of the Mediterranean shell is somewhat different from that in Mr. Adams's description. Instead of being very finely and obliquely striated (or whatever may be meant by " stri-atula"), the surface is microscopically but irregularly reticulated. It differs from N. flammulata in the peculiar colouring of the shell, and the shape of the umbilical callus. The operculum is calcareous in a specimen which was kindly given me by my late friend Mr. McAndrew. I have already, in my work on British Conchology, endeavoured to give this excellent naturalist ample but fully-deserved credit for his long and persistent labours in exploring so many parts of the North Atlantic for the furtherance of our common science ; and I would avail myself of the present opportunity to renew my grateful testimony. But the field of submarine researches has been, since his death, so greatly extended with respect to depth, that the result of his numerous dredgings in comparatively shallow water, although they were most u eful, will become of less importance in considering the difficult problem of geographical distribution. See, for instance, the important paper of Dr. Fischer in the ' Comptes Rendus ' for 1883, on some of the results of the last French Expedition, and the valuable communications of Professor Verrill to the Academy of Sciences at Cincinnati on the progress of the continued operations of the United States for similar objects. This is N. prietoi of Hidalgo, ex typo. |
