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Show 272 ME. CYRIL CROSSLAND ON THE [Feb. 1G, I '. hamulus and ('. macropus without contrasting them in any way, and, indeed, the parts he described in the one species he altogether passed over in his description of the other, and vice versa. Such descriptions as are given by this author are so obviously inexact, and his figux-es without explanations so unintelligible, that the whole can only be ignored. Nos. 1 and 2 are therefore struck off the above-given list. This circumstantial evidence for the identity of the above-named species with that of European seas has been completed by my examination of a specimen, undoubtedly of the latter species, from the Cape of Good Hope. I owe this opportunity to the kindness of Prof. Mcintosh. Grube's description of C. appendiculatus is exceedingly short and without figures. The differences from C. variopedatus ai*e (1) only 8 pax-apodia in tlxe fix-st body-region ; (2) tlxe uncini of the tori of the first body-region " ai'e armed with about 20 very short denticles." As Joyeux-Laffuie shows, C. variopedatus sometimes has only 8 parapodia in the anterior l-egion, and " about twenty " teeth to tlxe uncinus is too slender a distinction for the creation of a new species. Whether or no C. appendiculatus is a synonym of C. variopedatus cannot at present be stated. W e conclude, therefore, that the genus Chcetopterus as at present known contains four species, including the two new species from Gardiner's collection, distributed as follows :- 1. C. variopedatus. European seas, the Straits of Magellan, the Antilles, North-American coasts, Cape of Good Hope. 2. G. cautus. South of Japan. 3. C. longimanus. 1 mi M n- » i • i , ~ . y. - The Maldive Archipelago. 4. C. longipes. J r ° In addition are many species partially described, which may or may not be identical with C. variopedatus or may be as yet unknown species. The former is the more likely explanation, and in that case C. variopedatus has been recox-ded fx-onx almost the whole of the Nox-thexm and Southern hemispheres. CHCETOPTERUS LONGIMANUS, sp. n. (Plate XVIII. figs. 1, 2.) With eleven "thoracic" parapodia, of which the 1st is longer than the 2nd and 11th and nearly as long as the longest, the 9th. Hind body short, of about twenty segments. The setce of the notopodia of this region have flexible ends. Uncini large, dark brown in colour, with few teeth. Otherwise the species resembles C. variopedatus. Locality. Suvadiva Atoll, the Maldive Archipelago, 30 fathoms. Hough stony bottom. The single specimen is a male, sperm-morulas rendering the hind body and its parapodia an opaque white. It is therefore probably near to its full size, though its total length is but 76 nim. The length is made up thus : A, 15 mm.; B, 24 mm. |