BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:o 17. 15 
short, the second more than twice longer, the third as long 
as the the two preceding together. The flagellum is more 
slender, four-jointed, the first joint it shorter than the last one 
of the peduncele (7: 11), the second shorter than half the first, 
the second, third and fourth subequal in length, tapering to- 
ward the end. All joints of the flagellum carry short hairs, 
especially along the hinder and lower side. 
The second pair of antenne (P1. II. fig: 22) are as long as the 
head and the five first pereional segments together. The pe- 
duncle is stouter and longer than the peduncle of the first 
pair, it surpasses the hinder margin of the first pereional seg- 
ment, and consists of only four joints, the original two first 
being probably fused together. The first joint it short but 
very thick, the second twice longer than the second and the 
fourth the longest, the three last ones are provided with short 
hairs. The flagellum reaches to the anterior margin of the 
sixth pereional segment, when the animal is stretched out; 
it consists of fourteen long articles, each carrying a bundle of 
very minute hairs at the outer distal corner. The last of 
the artieles carries at the the tip a bundle af long fine hairs. 
The fifth segment of the pereion is the longest, the seventh 
the shortest. All are marked on the dorsal side with dots 
composed of black, more or less regularly radiating lines, but 
not so symmetrically situated as in Slabberina agata. according 
to the description and figure of VAN BENEDEN (1. c.) The fourth 
and fifth segments are the broadest, but narrower than twice 
the breadth of the head (18: 11). 
The epimerals (Pl. IL fig. 21) are well developed. The 
ones of the second and third segments are small, not very 
sharply pointed backwards. The epimerals of the fifth seg- 
ment are the largest. The three last ones are a little pro- 
duced at the lower hinder corner, forming sharp points. The 
epimerals of the seventh segment are the shortest. 
The pereiopoda. The three first pairs are subequal, short, 
not half as long as the fourth pair (P1. II. fig. 23). The fe- 
mur is long, narrow, linear, with a bundle of long hairs at the 
lower, inner corner; the genu is long, longer than the tibia, 
the carpus is very small, almost concealed in the fore-part of 
the tibia. Both are armed with short, strong spines at the 
lower inner corner. The metacarpus is long, scarcely shorter 
than the three preceding joints together, armed along the 
