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Show 1885.] 'LIGHTNING' AND ' PORCUPINE ' EXPEDITIONS. 31 work. Reeve followed Forbes and Hanley and older British authors in referring the present species to N. nitida of Donovan (a West- Indian shell) ; but he described and figured under that name and as our species N. guillemini of Payraudeau. His errors of nomenclature are very bewildering. 5. NATICA INTRICATA, Donovan. N. intricata, Don. Brit. Shells, v. t. 167; Hidalgo, Moll. mar. Esp. lam. 20A. f. 8-10, 9 (opt.). ' Porcupine ' Exp. 1870 : Tangier B. Distribution. Portugal and Azores (McAndrew), throughout the Mediterranean and Adriatic; 2-120 fms. Fossil. Pliocene: Tuscany, Monte Mario, Calabria, Sicily, and (?) Rhodes. Post-tertiary : Militello, in tufo balsatico (Philippi). This is (partly) Nerita cunrena of Linne, Natica marmorata, Risso, N. valenciennesi, Payraudeau. 6. NATICA MONTACUTI, (montagui) Forbes. N. montagui, Forb. Mai. Mon. p. 32, pi. ii. f. 3, 4. N. montacuti, B. C. iv. p. 227 ; v. p. 215, pi. lxxviii. f. 6. ' Lightning ' Exp.: St. 5, 6, 7- 'Porcupine' Exp. 1869 : 1, 2, 3, 6, 9, 13, 14, 23a, 25, 36, 41, 47, 68, 70, 89, Little Minch. 1870 : Atl. (var. minor), 3, 3a, 9, 30 ; Med. C. de Gata, Adventure Bank. Distribution. Iceland, Finmark to Guernsey, Belgium (Malzine) ; 5-570 fms. Fossil. Post-tertiary : Christiania and Bohuslan, Hebrides, Bridlington, Calabria, Sicily, and Rhodes. 7. NATICA NOTABILIS1, Jeffreys. (Plate IV. figs. 1, 1 a.) S H E L L globosely fusiform (being pointed at the apex and base), thick, opaque, rather glossy : sculpture, none except irregular lines of growth: colour yellowish-white, with three equidistant bands on the body-whorl, composed of reddish-brown streaks, which are close-set and obliquely arranged ; one of these bands encircles the middle and is broader than the others, the upper one lies just below the suture, and the third or lowermost is placed below the periphery ; there is also a small blotch of the same colour above the umbilical pad : spire short, but prominent and pointed : whorls 5, convex, compressed at the top; the last occupies T 8(, of the spire : suture slight, but distinct, not channelled : mouth semilunar, equal in length to f- of the spire: outer lip thin, curved but not inflected at the top : inner lip narrowly spread on the upper part and thickened at the base: umbilicus contracted by a thick but small pad, so as to form a crescentic groove : operculum chitinous, ear-shaped, horn-colour, indistinctly striated in the line of growth, and having a small lateral spire of three whorls, defined by an overlapping and raised edge. L. 0-4, B. 0'35. 1 Remarkable. |