98 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Feb. 2, 



Fam. Mu N N I D ^. 



Genus Munna, Kroyer. 



1. Munna 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 mucli 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. Tiie species is pale 

 and transparent, without any trace of pigment. The head terminates 

 in a truncated anterior margin ; the eyes are sessile — not stalked. 

 Tlie 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 antetmules 

 are like those of the last species, but the flagellum is only three- 

 jointed. 



Kerguelen, 30 fathoms. 



Genus Ischnosoma, Sars. 

 1. Ischnosoma 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 1 millim. The fourtli 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 

 epiniera. The presence of spines upon the fi(\h segment of the thorax 

 distinguishes this species from both I. bispinosum and I. quadri- 



