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Show 1 14 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Feb. 2, from that family on account of the branchiate uropoda; but Anuropus should at least be regarded as the type of a special subfamily equivalent to any of the other four, viz. Cymothoadiens errants, C. raviseurs, C. branchiferes, and C. parasites, into which M M . H. and A. Milne-Edwards have divided the family. Anuropus has a further " abyssal character" in the absence of eyes, and it is also remarkable for the abortive antennules, which are only represented by two joints-a stout basal joint, and a longer stout curved distal joint, which is possibly the equivalent of a metamorphosed flagellum. The single species I may term 1. ANUROPUS BRANCHIATUS, n. sp. The extreme length of the specimen, which is a female, is 70 millim. The head is small, and entirely without eyes ; the body is extremely convex ; the thoracic segments are subequal, the six posterior are furnished with distinct epimera; the abdominal segments are all smaller than the thoracic segments and subequal; the fifth segment is fused with the telson and forms a caudal shield, which is rounded and flattened in shape. There is no trace of eyes ; the antennules are short and thick, consisting of a thick basal joint and a longer, somewhat curved distal joint. The antennae are longer and more slender, and quite normal in structure; the mandibles have a three-jointed palp. The abdominal appendages are all similar to each other, consisting of a short, stout, basal joint, and two equal rami flattened and rounded in form. Station 218 ; 1070 fathoms. Fam. SpHiiROMiDs. Genus CYMODOCEA, Leach. 1. CYMODOCEA ABYSSORUM, n. sp. This species is the only representative of the family at present known from deep water ; it is represented by two individuals, one a male, the other a female. The body in both is flattened, and is evidently incapable of being rolled into a ball. The eyes are small and whitish from the absence of pigment ; the first thoracic segment is broader than the head, the following segments are subequal, and with well-developed sickle-shaped epimera, absent in the last of the segments. Abdominal shield with two blunt conical spines on the dorsal surface, one behind theother ; posterior extremity obtuse and rounded. Uropoda with the rami subequal in the female, the outer being slightly the longer; in the male the outer ramus is very much longer than the inner and curved inwards. Station 218; 1070 fathoms. Fam. APSEUDID^E. Genus APSEUDES, Leach. 1. APSEUDES ANTARCTICA, n. sp. The largest specimen of this small species measures 4 millim. in length. The cephalothorax is nearly as long as the first four segments |