46 



CAKI- ISOVALLIUS, AMPHIPODA HYPERIIDEA. 



VIHILID^. 



(Irica, carpi et metacarpi hirsiiti. Tibia3 pcdiim tertii ao quarti i)anum non tumida?. Pedee 

 (liiiuti ac sexti pariiim pedibus tertii ac quarti j)aidlo soluiii ](jngiorei^. Pedet^ i^exti paris 

 longissimi. Segmentum secundum et tertiuni uri libera, non coalita. Anguli postici seg- 

 nienti ultinii non ])rodueti. Pedunculi jiednm uri augusti, cylindrici, ramis multo longiores. 

 Telson rotundatam diuiidin pediincidi ultimi paris longius. 



Tlic heud is rostrate, shorter tlian tlie first t\\o jiereioual segments. The flagellum of the 

 first pair of aittenna' is a little longer than the head, and rounded anteriorly. The femora uf 

 the first six pairs of pereiopoda are cylindrical; the carpi and metacarpi provided with 

 loug hairs. Tlie tibia? of the third and fourth pairs are not tumid. The fifth and sixth 

 pairs are a little longer tlian the third and fourth pairs. The sixth pair are the longest 

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

 of the last segments are not produced. The peduncles of the uropoda are narrow, c3'lin- 

 drical, much longer than the rami. The telson is rounded, longer than half the peduncle 

 of the last pair of uropoda. 



Colour. Greenish yelluw (?). 



Length. 12 mm. 



Hal). The seas of Asia. (M. E.) 



Syn. 1830. VibiUa Feroni, II. MILNE EDAVARDS. — »Extrait de llecherches pour ser- 



vir å IHistoire nat. des Cru- 

 stacés amphipodes". Ann. Se. 

 Nat. Torne 20"«, p. 386. 

 , )> » » 1840. Histoire uaturelle des Crustacés. 



Torne 3"'^ p.73. Pl. 30, tig. 1. 

 » » » Spence Bate. 1862. Gatal. Ampli. Crust. Brit. Mu- 



seum, p. 303. 



From the descriptioii of Milne Edwakds I add the following details. 



The liead carries a coinparatively long rostruiu, longer than half the head. The head 

 is much deeper than long. 



The ei/es are elongate-ovate, large, placed vertically. 



The first pair of antennce are quite as long as the head and the first pereional 

 segment. The flagellum is thick, broadly rounded at the apex, as long as the head and 

 half the first pereional segment, provided with long hairs and some spines. 



The ■■second pair of antennce are hliform, a little longer than the first pair, few- 

 jointed, the last joints very .short. 



The maxillipeds are provided with a rounded median lamina and two large bean- 

 shaped lateral lobes, (at tlie iinier side are to be seen two rudimentary appendices corre- 

 spondiiig with the palps in the Gammarids? see Hist. nat. des Crustacés p. 72 and 

 pl. 30, tig. 2.) 



The pereion is smooth, the segments almost equal in length, the seventh a little 

 longer than the others. The epimerals are narrow, equal. 



The iirst and second pairs oi pereiopoda are subcheliform ; the carpal process of the 

 first is shorter, that of the second longer than half the metacarpus. The tibia?, carpi, and 



