16 EXPEDITION ANTARCTIQUE BELGE 



Abdomen slightly longer than the cephalothoracic région ; the five anterior segments 

 subcylindrical with a médian, well defined, narrow, rounded carina ; on the sixth segment this 

 carina is manifest in front, but slightly developed behind the middle (fig. if). 



Third maxillipeds (figs. i c — i d) hâve the distal part of the second joint a little narrower 

 than its proximal portion, because the joint increases only a little in breadth from the middle to 

 the base of the third joint ; fourth joint is only twice as broad as the third and twice as broad as 

 long ; fifth joint is serrated along the inner part of the front margin and the distal part of the 

 inner margin ; sixth and seventh joints equal in length. 



First pair of legs (fig. i é) extend only a little beyond the pseudo-rostrum (fig. la). Second 

 joint is somewhat longer than the sum of the five distal joints ; it begins to taper in breadth at 

 the base of the distal third of its total length. Fifth joint is much longer than the sum of the 

 third and the fourth, it is exactly as long as the sixth, and nearly twice as long as the seventh. 



The peduncle of the uropods (fig. i/) is scarcely longer than two-thirds of the sixth 

 abdominal segment and just as long as the exopod. The endopod (fig. i g) tapers in an acute 

 point and has along the middle of its inner margin about eight serrations, probably insertions 

 for spines broken off with the exception of the last one. 



The colour was noted to be : « Flavus avec taches arrondies blanches. » 



Locality. — Lat. yi° 14' S., long. 8o° 14' AV., May 12, 1898, swab ; one spécimen. 



2. — Campylaspis frigida n. sp. 



'PI. III, figS. 2 (7— j n 



The spécimen is an adult female with the marsupium filled with brood ; it measures 

 6 mm. In gênerai aspect it is similar to C. verrucosa G. O. S., but it differs in several particulars 

 and especially in the shape of fourth joint in third maxillipeds. 



The carapace has the integuments so thin that it became impossible to give really good 

 figures of the knots : when the animal is immersed the outlines of the nodiform protubérances 

 are partly not discernible, and when it is taken out of the liquid it almost instantly collapses. 

 The figures given convey the impression that the majority of the knots are arranged in rows 

 and that they differ much from each other in size. In other respects the céphalothorax differs 

 scarcely from Sars' drawings of C. verrucosa. 



The antennulae (figs. 2 c — 2 d) are of moderate length ; the basai joint is strongly curved, 

 evidently shorter than the sum of the two others ; the second joint is somewhat longer than 

 the third. The outer flagellum is a little shorter than the sum of the two distal joints of the 

 peduncle; it is divided into four joints, the first very short, the third very long and longer 

 than the sum of the first and the second, with a very long sensory seta at the end ; the fourth 

 joint is twice as long as the first, with a couple of sensory setse. The inner flagellum is a 

 small oblong joint. 



First maxillipeds (figs. 2e — 2/) almost as in C. verrucosa. Second maxillipeds (figs. 2g — 2/1) 

 differ from those in C. verrucosa especially in the shape of the penultimate joint, but this 

 joint is similar to that in C. horrida G. O. S. 



Third maxillipeds (fig. 2 i) hâve the fourth joint shaped quite différent from that met 

 with in C. verrucosa and allied forms. In C. verrucosa the fourth joint is oblong, about twice 



