98 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Feb. 2, 
Fam. MuNNID2. 
Genus Munna, Kroyer. 
1. MuNNA MACULATA, 0. sp. 
A single male example of this species was dredged in shallow water 
at Kerguelen. It measures about 4 millim.inlength. 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 antennz 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, 0. sp. 
This species, like the last, is represented by a single male specimen, 
measuring rather lessthan 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 IscuNosoma, Sars. 
1. IsCHNOSOMA BACILLUS, 0. 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 | 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 I. dispinosum and I. quadri- 
