KONGL. SV. VET. AKADEMIBNS HANDLINGAR. BAND. 22. NtO 7. 239 



the inner ramus; the outer ramus is shorter than the inner, both are serrated as in the 

 first pair. The peduncle of the third pair is not fully three times as long as broad, and 

 only a little longer than the rami, which are equal in length, and serrated as in the 

 first pair. 



The telson is triangular, rounded at the apex, and considerably shorter than the 

 last ural segment; it is scarcely broader than, and not half as long as, the peduncle of 

 the last pair of uropoda. 



The female. 



The forepart of the body is wider and deeper than in the male; the head and peraeon 

 together are longer than the pleon and urus together. 



The head is as long as the coalesced portion of the perseon. 



The first pair of antenna reach to the under margin of the head; the single fla- 

 gellar joint is twice as long as the whole peduncle. 



The second pair of antennae are very short, and do not reach as far down as the 

 first pair. The peduncle consists of only two free joints; the glandular cone is nearly 

 as long as the first joint; the single flagellar joint is not longer than the peduncle. 



The perceopoda are like those in the male. 



The pleon is considerably shorter than the peraeon; the first segment is much shorter 

 than the last two peraeonal segments together. 



The urns is somewhat broader than in the male. 



Dr. K. Brandt records in »Die Kolonie-bildenden Radiolarien des Golfes von 

 Neapel» x ) a small and probably not fullgrown Hyperia, which he found living as a true 

 parasite in the colonies of Myxosphcera coerulea and of Collozoum pelagicum. I refer 

 the reader to his interesting treatise (1. c. p. 139 and 140). 



] ) Fauna und Flora des Golfes von Neapel, XIII. 



