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Show 920 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Dec. 1, The species is very closely allied to Eurycope fragilis. The head is long, equalling the two first segments at the thorax taken together ; it has a pair of hooked spines, one on either side of the median line. Of the first four segments of the thorax, the first is rather shorter than the rest, which are subequal; the three last of these segments are furnished with a longish median spine ; the lateral margins of these segments, as in so many other species, are prolonged into a forwardly directed spine. The three posterior segments of the thorax have the form characteristic of the genus ; the two first of these segments have a pair of median dorsal spines, which appear to be wanting on the third. The abdominal segment is somewhat oval in form, and terminates behind in an obtusely pointed extremity ; in front of the articulation of the uropoda are a pair of lateral spines which are curved forwards in a crescent shape ; in front of these, and near to the antero-lateral margin, are another pair of spines. On the dorsal surface are also a pair of spines, situated one behind the other. Station 76, 900 fathoms. EURYCOPE, sp. At Station 147 a fragment of an Isopod was obtained, which I refer doubtfully to the above species ; it consists of the last three segments of the thorax and the first half of the abdomen : all these thoracic segments have a pair of median spines, and there are two dorsal spines upon the abdomen ; the size of the fragment indicates a specimen of about 20-25 millim. in length. Station 147, 1600 fathoms. 5. E U R Y C O P E FRAGILIS, n. sp. This species has a greater horizontal and vertical distribution than any of those obtained by the ' Challenger.' A large specimen, measuring 30 millim., was dredged in the Antarctic Ocean south of Kerguelen ; another specimen, smaller-, between Prince Edward's Island and the Crozets; and a third between Kerguelen and Australia ; finally, a number of small individuals were dredged off the coast of Japan in the North Pacific. This species is nearly allied to E. atlantica, but differs from it in the following points :-there are no spines developed upon the head, which is smooth and convex as in the majority of species. The abdomen differs very much in shape in the two species; in the present species it is wide and more triangular in form ; the anterior lateral spines are nearer to its articulation with the last segment of the thorax ; there is only one spine upon the dorsal surface of the abdomen, situated near to the proximal extremity. Station 152, 1260 fathoms; Station 147, 1600 fathoms; Station 158, 1800 fathoms; Station 237, 1875 fathoms. 6. EURYCOPE PELLUCIDA, n. sp. The present species is quite the largest of the family Munnopsidae. The single specimen (a male), from near N e w Guinea, measures 45 millim. in extreme length. |