KONGL. SV. A^ET. AKADEMIENS HANULINdAR. BAND. 22. N:i) 7. 9 



of uropoda is a little shorter thau the rami; the peduncle of the second pair is iimcli 

 shorter than half the rami, the interiör ramus is ovate; the peduncle of the last pair is twice 

 as long' as the rami. The telson is semicircular, shorter than the last ural segment, scarcely 

 as long as a fifth of the length of the peduncle of the last pair of uropoda. 



Colour. Light green. 



Length. 9 mm. 



Hab. South Pacific. Only one specimen is known, captured during the circumnavigation of H. 

 Swed. M:ty's Frigate Eugenie 1851—1853. (S. M.). 



Syn. 1887. Cyllopus U-vis, c. BOVALLIUS. »Systematical list of the Amphipoda Hyperiidea». Bih. t. K. Sv. 



Vet. Akad. Handl. Bd. 11. N:o 16, p. 12. 



C y Hop US levis is to be distinguished from the other .species by the large femiir 

 of the seventh pair of pei'eiopoda, the rectangular hinder corners of the first two j^leonal 

 segments, and by the ovate interiör ramus of the second pair of uropoda. Only the male 

 is known. 



The head is almost globular, only a little longer than the tirst two pex'eional seg- 

 ments (8:7). 



The eyes occupy the whole surface of the head. 



The first pair of antennoe (Pl. I, fig. 37) are scarcely longer than the head and 

 the tirst pereional segment together. The first joint of the peduncle is longer than the 

 two foUowing. The first joint of the flagellum is thick and tumid at the base, suddenly 

 narrowed a little before the middle; the terminal part is almost cylindrical, about as long 

 as the basal tumid part of the joint together with the whole peduncle. No niinute articuli 

 are to be seen at the apex of the flagellar joint. 



The second pair of antennce are .six-jointed, the fourth joint is the longest, narrow, 

 linear, longer than the three preceding together, and equalling the length of the t^\'o last 

 ones. The joints are all fringed with minute, equidistant hairs along the upper and the 

 inferior margins. 



The first pair of pereiopoda (Pl. I, fig. 38) are as long as the second pair. The 

 feraur is tolerably broad, the anterior margin curved, the posterior straight. The tibia 

 is a little produced at the loAvei", posterior corner. The carpus and metacarpus are 

 equal in length, both smooth. The dactylus is feebly serrated along the posterior margin, 

 half as long as the metacarpus. 



The second, pair (Pl. I, fig. 39) have the femur narrower, almost linear. The carpus 

 is produced at the loAver posterior corner forming a short spoonshaped process, not serrated 

 but fringed with long stifif hairs, and reaching to a third of the length of the metacarpus. 

 The carpus is considerablj' shorter than the metacarpus. The metacarpus is smooth. 

 The dactylus is finely sei^rated along the posterior margin, shorter than a third of the 

 metacarpus. 



The tliird and fourth pairs are equal in length; the metacarpus is not serrated, 

 as long as the carpus. 



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



