KONGL. SV. VET. AKADBMIENS HANDLINGAK. BAND. 21. N:0 5. 



53 



5. VIBILIA GIliBOSA, C. BOVALLIUS, 1887. 



PL VIII, fig. 9—17. 



Diagl). Caput non rostratuni, seguienta dua priora pereii longitudine aequans. Oculi parvi. Flagellum 

 antennarum primi paris ante obtusum, capite brevius. Pedes pereii graciles, non hirsuti. 

 Carpus pedum primi paris dilatatus, sed non productus; processus carpi pedum secundi paris 

 dimidio metacarpi longior. Tibia 1 pedum tertii ac quarti parium non tumidae, dactyli mo- 

 dici. Pedes quinti et sexti parium pedibus tertii et quarti parium vix longiores, femora 

 lata linearia, dactyli longi. Dactylus pedum septimi paris metacarpo paulJo brevior. Pe- 

 reion dorsaliter gibbosum. Segmentum secundum ac tertium uri coalita. Anguli postici 

 segment! ultimi non producti. Pedunculi pedum uri lineares, ramis paullo longiores. Telson 

 mediocre, triangulare, dimidio pedunculi ultimi paris pedum uri longius. 



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

 small. The flagellum of the first pair of antennas is anteriorly obtuse, shorter than the 

 head. The pereiopoda are slender, not hirsute. The carpus of the first pair is dilated 

 but not produced; the carpal process of the second pair is longer than half the metacarpus. 

 The tibial of the third and fourth pairs are not tumid, the dactyli middle-sized. The fifth 

 and sixth pairs are scarcely longer than the third and fourth; the femora are broad, linear; 

 the dactyli are long. The dactylus of the seventh pair is a little shorter than the meta- 

 carpus. The pereion is dorsally tuberculated. The second and third ural segments are 

 coalesced. The hinder corners of the last segment are not produced. The peduncles of 

 the nropoda are a little longer than the rami, linear. The telson is middle-sized, triangular 

 a little longer than half the peduncle of the last pair of uropoda. 



Colour. Yellowish white. 



Length. 6 — 7 mm. 



Hab. The tropical Atlantic at Lat. 17° 30' 8. and Long. 2° 30' W. taken by Captain George von 

 Scheele 1885. (S. M.; U. M.) 



Syn. 1887. Vibilia gibbosa, C. BOVALLIUS. "Systematical list of the Ainplripoda Hyperiidea». Bill. t. K. 



Sv. Vet. Ak. Handl. Bd. 11. N:o 16, p. 7. 



By the tuberculous aspect of the pereion this species is easily to be distinguished 

 from its allies. 



The head is large, only a little deeper than long. 



The eyes are comparatively small, elongated, a little broader above. 



The first pair of antenna (PI. VIII, fig. 10) are almost as long as the head and 

 the first pereional segment. The first joint of the peduncle is nearly twice as long as 

 the two following joints together. The first joints of the flagellum is a third longer than 

 the peduncle, the two terminal joints are very minute. 



The second pair of antennce (PI. VIII, fig. 11) are shorter than the first pair, five- 

 jointed, the basal joint is the shortest. 



The pereional segments being separated from one another by deep impressions, 

 the pereion appears humpy or tuberculous. Between the first and second segments 



