KONGL. SV. VET. AKADEMIENS HANDLINGAH. BAND. 22. N:0 7. 213 



allies, H. Fahrei and H. promontorii. The species doubtfully given by Stebbing (1. c. p. 

 1884) as f>Hypevia inzoni, young male?» belongs probably not to this species, but from 

 the shortness of tlie description it is inipossible to judge wiierc it ought to be placed 

 if it were to be made an independant species. The statement tliat the mandibles want 

 a palp is curious, and contrary to what is known of all the other species of Hyperia. 

 The unusual length of the telson is also a strikins' feature. 



The male. 



The body. The head and perajon together are scarcely longer than the pleon. 



The head is longer than the tirst four personal segments together. The antennal 

 groove conimences at the middle of the front side. 



The first pair of 'perceopod,a. The fem ur is shorter than the four following joints 

 together. The carpus is only a little dilated, and scarcely produced. The metacarpus 

 has three distinct notches on the hind margin, each carrying a short spine; the front margin 

 has a single, long bristle. The dactylus is much more than half as long as the meta- 

 carpus, and is smootli. 



The second pair reach fully to the apex of the carpus of the third pair. The femur 

 is as long as the four following joints together. The carpal process is only a little longer 

 than a third of the hind margin of the metacarpus. The metacarpus is longer than the 

 stem of the carpus; the hind margin is smooth; the front margin carries two long bristles. 

 The dactylus is nearly as long as the metacarpus. 



The third and fourth pairs. The femur is longer than the three following joints 

 together. The carpus has one shorter bristle in the middle of the hind margin, and one 

 longer at the lower corner, which last bristle is longer than the breadth of the joint. 

 The metacarpus is not much narrower than the carpus, and about as long as the two 

 preceding joints together; the hind margin is faintly serrated. The dactylus is as 

 long as two-thirds of the metacarpus. 



The fifth, sixth, and seventh pairs. The femora of the tifth and seventh pairs have 

 the same breadth, while that of the sixth is narrower; the femur is fully as long as the three 

 following joints together. The carpus of the iifth and sixth pairs is as long as the tibia, 

 that of the seventh is considerably shorter. The metacarpus is shorter than that joint 

 in the third and fourth pairs, and much shorter than the two preceding joints together, 

 and is smooth. The dactylus is more than half as long as the metacarpus. 



The jjleon. The first segment is onl)' a little shorter than the last three perajonal 

 segments together. 



The urus is considerably longer than the last pleonal segment. The first ural seg- 

 ment is almost twice as long as the last coalesced, which is much broader than long. 



The uropoda. The Jirst pair reach further back than the third; the peduncle is 

 three times as long as broad ; the inner ramus is shorter than the peduncle, but longer than 

 the outer ramus; the rami are elongate, sharp-pointed. The second pair reach almost to 

 the middle of the outer ramus of the last pair; the inner ramus is longer than the outer, 



