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Show 98 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Feb. 2, Fam. MUNNIDJE. Genus MUNNA, Kroyer. 1. M U N N A MACULATA, n. sp. A single male example of this species was dredged in shallow water at Kerguelen. It measures about 4 millim. in length. The body is smooth, and the integument has numerous black pigment-spots. The shape of the body is characteristically that of a female, being broader anteriorly than posteriorly ; the head is about as long as the first two segments of the thorax; the anterior margin is straight and fringed with a row of stiff hairs ; the eye-stalks are well developed. The four anterior segments of the thorax are subequal ; the three posterior are narrower ; the thoracic segments have short rounded epimera. The antennules consist of a four-jointed peduncle, the two distal joints of which are much shorter than the proximal joint; the flagellum consists of four joints, which are elongated and narrow. The antennae are very long, about twice the length of the body ; the flagellum is shorter than the peduncle: the last two joints of the peduncle are elongated and subequal. Kerguelen, 25 fathoms. 2. MUNNA PALLIDA, n. sp. This species, like the last, is represented by a single male specimen, measuring rather less than 3 millim. Like other species, the male is of approximately uniform diameter throughout. The species is pale and transparent, without any trace of pigment. The head terminates in a truncated anterior margin ; the eyes are sessile-not stalked. The first segment of the thorax is longer than any of the three following, which are subequal; their margins are rounded and furnished with small rounded epimera ; the three posterior segments are curved backwards ; the first is very short, the rest increase slightly in length progressively. The abdominal shield is oval, ending in an obtusely rounded extremity. The antennules are like those of the last species, but the flagellum is only three-jointed. Kerguelen, 30 fathoms. Genus ISCHNOSOMA, Sars. 1. I S C H N O S O M A BACILLUS, n. sp. This species is only represented by a single fragment, including the abdomen and four last thoracic segments, which is, however, sufficient to determine with at least probability its systematic position ; it measures 10 millim. The fourth and fifth segments of the thorax, as in Sars's species, are closely connected and form an hourglass-shaped structure, the two pairs of appendages belonging to these segments being placed at each extreme of the conjoined segments. The fourth and fifth segments are each provided with long spine-like epimera. The presence of spines upon the fifth segment of the thorax distinguishes this species from both /. bispinosum and I. quadri- |