KONGL. SV. VET. AKADEMIENS HANDLINGAH. BAND. 22. N:0 7. 185 



broader than that of the third and fonvth pairs, and by the telson being sliortcr than lialf 

 the peduncle of tlie last pair of uropoda. 



The m a 1 e. 



Pl. X, fig. 25—29. 



The hody is broad but not tuniid, the hind part not being raore compressed than 

 the perason; the pleon and urus together are considerably longer than the perason. 



The head is deeper than long, and a little deeper than broad. The antennal groove 

 on the front side commences above the middle and is somewhat higher than broad. 



The first pair of antenncB in the adult male are much more than half as long as 

 the whole length of tlie animal, longer than the head and perceon together, and shorter 

 than the second pair. The first joint of the peduncle is about as long as broad, and not 

 fully twice as long as the two foUowing joints together. The tirst joint of the flagellum 

 is about as long as the whole peduncle, not very tumid and slowly tapering towards the 

 apex; the under and inner sides are thickly covered with olfactory hairs; the second and 

 third joints are very short; the foUowing joints increase in length to the eighth, the 

 next are equal in length, the last is somewhat shorter; in all the flagellar joints are 

 twenty-four in number. 



The second pair of ajitennce. The peduncle is stout; the first free joint is as long 

 as broad; the glandular cone is vei-y large and obtusely rounded at the apex. The second 

 pedunculai- joint is a little more than half as long as the tirst; the third is almost cylin- 

 drical, and scarcely as long as the two preceding together. The first joint of the flagellum 

 is longer than the last peduncular joint, broad at the base and evenly tapering towards 

 the apex; the foUowing joints are subequal in length. The flagellum has in all twenty- 

 five joints. 



The mouth- organs are like those in Hyperia Latreillei. 



The -perceon. The first segment is fully as long as the second; the third is a little 

 longer; the seventh is the longest of all and considerably longer than the sixth. 



The epimerals are about as long as the under margins of the corresponding seg- 

 ments, and irregularly rounded below. Those of the first four pairs are fully as deep as 

 long; the foUowing are longer than deep. 



The branchial säcks are large, ovate, and almost as long as the femora of the 

 corresponding pairs. 



The first pair of 2')ermopoda (Pl. X, fig. "26 and 27). The femur is as long as the 

 four foUowing joints together. The genu is broader than long, with a few comparatively 

 short bristles at the lower hind corner. The tibia is broadly produced at the lower hind 

 corner, gouge-shaped, truncated at the apex, and fringed with tolerably short bristles. 

 The carpus is longer than the two preceding joints together, dilated, and much longer 

 than broad at the lower end; it is distinctly produced, and the margins of the front side 



K. Sv. Vet. Akad. Handl. Rand. 22. N:o 7. ■^^ 



