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Show 32 ZOOLOGICAL COLLECTIONS M A D E DURING [Jan. 4 employed that name for what appears to be a species of Triton, judging from the figure cited in Knorr's 'Vergniigen,' vol. ii. t. 27. f. 3. CERITHIUM (BITTIUM) OELATUM, Couthouy. Hab. Boija Bay, 20 fathoms {Coppinger); "Orange Harbour, Terra del Fuego " {Couthouy). Of the three series of granules encircling the whorls, the uppermost is the finest, and the lowermost the coarsest. This species is figured in the Atlas to Wilkes's Exploring Expedition (figs. 174-174 d). TROCHITA (CLYPEOLA) CORRUGATA, Reeve. Hab. Stations 6 and 7. To this species probably belong Trochus pileus, Lamarck, Tro-chatella pileolus, d'Orbigny, and Calyptra?a costellata, Philippi. CREPIPATELLA DILATATA, Lamarck. Hab. Station 5. These specimens differ from those found more north in being entirely destitute of colour, like C. pallida, Broderip ; but in other respects there appears to be no difference. LAMELLARIA PATAGONICA, sp. n. (Plate IV. figs. 9, 9 a, 9 b.) Peronia, sp., Cunningham, Nat. Hist. Straits of Magellan, 1871, plate before p. 75, fig. 1, and p. 449 ; id. Trans. Linn. Soc. vol. xxvii. p. 484, pi. 58. figs. 4 a-b. " Mantle of a dirty yellow colour, marked with lines and blotches of light vandyke-brown, and its undersurface around the foot was marked with light-coloured striae " *. Animal high, convex, exhibiting to some extent the form of the shell, owing to the thinness of the mantle which envelops it. Foot somewhat truncate in front, gradually tapering towards the other end, which is rounded. Tentacles shortish. Eyes apparently sessile, situated at the outer bases of the tentacles. The teeth on the lingual ribbon in three series : the central with two equal diverging shanks, joined at the apex, which is recurved, with a small tooth on the middle of the cutting-edge and still smaller ones on each side ; the lateral teeth are acute at the tip, recurved, very finely serrate on the outer side, the serration being restricted to the central portion, also with an inner lateral prominence separated in part from the tooth by a sutural line, more strongly serrated than the outer edge, the denticles being apparently seven in number. From his description it will be seen that the character of the odon-tophore is very similar to that of L. producta (Troschel, ' Gebiss der Schnecken,' i. pi. xvi. fig. 4 ) ; but the shanks of the median tooth are not unequal, and the lateral teeth are more hooked at the tips. The horny oral process is composed of two pieces, very similar to those of L. perspicua (Troschel, /. c. fig. 1) ; it is nearly black at 1 Dr. Cunningham's description from the live animal. |