KONGL. SV. VET. AKADEMIENS HANOI, INGAR. BAND. 21. N:0 5. 



63 



a row of equidistant, short, fine hairs; the apex is obtusely pointed; the anterior margin 

 is oblique, fringed with a thick row of short incipient (microscopic) spines. 



The second -pair of antennae have a flagellum consisting of 7 articuli, one long, four 

 short, one a little longer, and a minute terminal one. 



The first pair of uropoda reach a little beyond the second; the rami have the margins 

 serrated. The second pair reach not beyond the extremity of the peduncle of the last 

 pair. The rami are coai*sely serrated, the denticles upon the inner margins minutely 

 serrated. The third pair have the peduncle twice as long as the rami; the rami minutely 

 serrated. 



The telson is lanceolate. 



11. VIBILIA VIATRIX, C. BOVALLIUS, 1887. 



PI. IX, fig. 1 — 13. 



Diagn. Caput non rostratum, segmenta dua priora pereii longitudine sequans. Oculi modici. Flagel- 

 lum antennarum primi paris ante obtusum, capite longius. Pedes pereii quinti et sexti 

 parium elongati, pedibus tertii ac quarti parium multo longiores. Femora pedum primi et 

 secundi parium linearia, angusta. Tibia? pedum tertii ac quarti parium tumida?, dactyli 

 longissimi. Femora pedum quinti ac sexti parium truncate ovata, metacarpi articulis 

 duobus prseeedentibus multo breviores. Dactylus septimi paris metacarpo multo brevior. 

 Segmentum secundum ac tertium uri libera, non coalita. Anguli postici segmenti ultimi 

 non producti. Pedunculi pedum uri ramis longiores. Telson magnum, obtuse triangulare, 

 dimidio pedunculi ultimi paris pedum uri longius. 



The head is not rostrate, as long as the first two pereional segments. The eyes are middle- 

 sized. The flagellum of the first pair of antenna', are anteriorly obtuse, longer than the head. 

 The fifth and sixth pairs of pereiopoda are elongate, much longer than the third and 

 fourth pairs. The femora of the first and second pairs are narrow, linear. The tibiae of 

 the third and fourth pairs are large, tumid; the dactyli very long. The femora of the 

 fifth and sixth pairs are truncate ovate: the metacarpi are much shorter than the two pre- 

 ceding joints together. The dactylus of the seventh pair is much shorter than the metacarpus. 

 The second and third ural segments are free, not coalesced. The hinder corners of the 

 last segment are not produced. The peduncles of the uropoda are longer than the rami. 

 The telson is large, obtusely triangular, longer than half the peduncle of the last pair of 

 uropoda. 



Colour. Yellowish. 



Length. 10 — 16 mm. 



Hab. The North and South Atlantic, the Pacific, the Indian Ocean. (D. M.; S. M.; U. M.) 



Syn. 1887. Vibilia viatri.r, C. BOVALLIUS. 



»Systematical list of the Ainphipoda Hyperiidea». Bill. t. K. 

 Sv. Vet. Ak. Handl. Bd. 11. N:o 16. p. 8. 



Vibilia viatrix seems to be the most cosmopolite species in the family. I know it 

 from the North and South Atlantic, the tropical parts of the Pacific, and the Indian 

 Ocean. It is easily to be distinguished from its congeners by the largely developed tibia? 

 of the third and fourth pairs of pereiopoda. 



