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Show 1881.] THE SURVEY OF H.M.S. 'ALERT.' 79 (1879), by the form of the terminal segment, which is acute at its distal end, and the greatly dilated basal joints of the antennules; the outer ramus of the uropoda is not larger than the inner; the frontal interantennulary process is obsolete. SPH^EROMA GIGAS. Sphceroma gigas, Leach, Diet. Sci. Nat. xii. p. 346 (1818) ; M.Edwards, Hist. Nat. Cr. iii. p. 205 (1840); Miers, Cat. New-Zeal. Crust, p. 110 (1876). Several specimens, all of small size, of this species, which is very common in the Straits of Magellan and at the Falkland Islands, and also occurs at the xluckland Islands and New Zealand, were collected by Dr. Coppinger at Elizabeth Island (6 fms.) Sandy Point (9-10 fms,) on a sandy bottom, and an adult male at Silly Bay. DYNAMENE DARWINII. Cymodocea darwinii, Cunningham, /. c. p. 499, pi. lix. fig. 1 (1871). Two examples were obtained by Dr. Coppinger at Elizabeth Island (6 fathoms), on a sandy bottom. It appears to be rare, as Dr. Cunningham met with it only on the north coast of Eastern Fuegia and in very small numbers. An adult example collected by Dr. Cunningham, and preserved in the Museum collection, is a male. The larger of the two obtained by Dr. Coppinger at Elizabeth Island is apparently a female, and is of a bright rose-colour. In a small example from Borja Bay (14 fathoms) the tubercle on the dorsal surface of the terminal segment is less developed and the lateral lobes of the fifth thoracic segment scarcely thickened. ClRRIPE D IA. BALANUS L^EVIS. Balanus Icevis, Bruguiere, Encycl. Meth. pi. clxiv. fig. 1 (1789) ; Darwin, Monog. Cirripedia, Balanidae, p. 227, pi. iv. fig. 2 (1854), ubi synon. Several clusters of this species, which is very common and abundant in the Magellan Straits, were collected at Sandy Point, at a depth of 7 fathoms, adhering to shells &c. All are of the typical variety. Its range, according to Darwin, extends northward to Chili, Peru, and California1. 1 Besides the species enumerated above, there are in the collection four small specimens of a species of Amphipoda, allied in many of its characters to Orcho-mene, obtained at Elizabeth Island in 6 fathoms, and four specimens of a Caligus (not the C. chcemichthys, Cunningham) taken from a sea-water fish at Puerto Bueno, in rather bad condition, which I do not venture to describe ; also, among the surface-dredgings made at various localities in the North and South Atlantic, larval stages of several speeies of Decapoda and Stomatopoda and a few species of oceanic Oopepoda. |