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



55 



Colour. 

 Length 

 Hab. 



Syn. 



Epiniera magna. Segmentum seeundum ac tertium nri libera, non coalita. Ånguli postici 

 segmenti ultimi non producti. Pedimculi pedum nri primi et tertii pariuin ramis paullo 

 longiores, pedunculiis pedum secundi paris ramos lougitudiiie tequans. Telson maximum 

 triangulära, dimidio peduncidi ultimi paris pedum uri multci longius. 



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

 sized. The flagellum of the first pair of antennce is anteriorly obtuse, as long as the head. 

 The pereiopoda are elongated. not hirsute. The femora iif the first and second pairs are 

 broad, ovate; the carpi are longer thau the metacarpi: the carpal process of the second 

 pair is as long as half the metacarpus. Tlie tibia^ of the third and fourth pairs are not 

 tumid; the dactvli are short. The fifth pair are a tiiird longer than the third and fourth 

 pairs. The sixth pair are longer than the fifth, tlie fenK>ra are brdad, t)vate: the daetyli are 

 short. The dactylus of the seventh pair is much sliorter than the metacarpus. The epime- 

 ral.i are very large. The second and third ural segments are free, not coalesced. The 

 posterior corners of the last segment are not produced. The peduncles of the first 

 and third pairs of nropoda are a little longer than tlie rami: tluit of the second pair is 

 as lono- as the rami. The tchou is verv laru-e. triano-ular, louLrcr than lialf the ticduncle 

 of the last pair of uropoda. 



Yellowish. 



10—20 mm. 

 The North Atlantic, the tropical Atlantic. (D. M.: S. M.: U. M.) 



1887. Viljilia rol>".«lr,, C. BOVAl.T.ir 



)>8_vsti-iniitio;il list of the Ampliipoda Hy])enidea». 

 Sv. Vet. Ak. Tlmidl. Bd. 11. N:n 16, p. 7 



Bill. t. K. 



Vibiliii robusta is oiie of tlie most coimnon species and very difticult to distinguish 

 from its next allies, T. horeal/s and T. Kroei/eri. However, it is chai-acterized by the iin- 

 commonly large ovate femora of the two first pairs of pereiopoda and bv the length of 

 the sixth pair. From l^ihilia Imi-cdlis it ditters especiallv by the length of the seventh 

 pair of pereiopoda, and the shortness of the se^"enth pereional segment, from Vihilia Kroei/eri 

 b)' the comparatively larger oj^es, the long acute rami of the uropoda, and the long .second 

 ural segment. 



The integument of the body is verv caleareous, härd and sniooth; the hinder margins 

 of the segments are a little prominent. 



The head is quite as long as deep, the anterior margin obtuse, not rostrate. The lower 

 anterior corners project beneath the base of the second pair of antenntv. 



The eyes are comparativel}' large, occupying more than two thii-ds of the height of 

 the head; thej' are broader abo\e, bean-shaped. 



The first pair of antenmr (Pl. VII, fig. 1.3 — 15) are as long as the head and the first 

 pereional segment. The first joint of the peduncle is twice as long as the t-\\o following 

 joints. The flagellum is obtuse at the apex, the first joint is more than twice as long 

 as the peduncle, the two terminal joints are very minute. In a younger animal, a 

 male, (Pl. VII, fig. 15) the first joint of the flagellum is a little more rounded anteriorly, 

 and the terminal joints are of a more considerable size. 



The second pair of antennce (Pl. VII, fig. Ui and 17) are seven-jointed in the male, 

 and five-jointed in the female. In the male the third joint is the longest, in the female 

 the third and fourtli are equal. 



