The Sympoda. 171 



GEN. CAMPYLASPIS, Sars. 

 1865. Campylaspis, G. O. Sars, Forh. Selsk. Christian, for 1864, 



p. 200 (75). 

 1900. C., Sars, Crustacea of Norway, vol. iii., p. 83. 



This being at present the only genus, the characters of the family 

 suffice for its definition. It contains twenty-three species, including 

 the two here described as new. 



CAMPYLASPIS OVALIS, n. sp. 

 Plate LXIII. 



This species, which agrees with C. vitreus, Caiman, in the trans- 

 parency of the integument and shares with that and C. macrophthal- 

 mus, Sars, the possession of two long lateral keels on the carapace, is at 

 once distinguished from the former by not having a transverse keel 

 to divide the carapace dorsally into two compartments, and from the 

 latter by having the eyelobe obsolete instead of peculiarly elongate. 

 At first sight the species was suggestive of the genus Platycuma, 

 Caiman, but it proved to be genetically distinct. 



The pseudorostral lobes are very briefly and obtusely produced in 

 advance of a minute eyeless eyelobe. In dorsal view the carapace 

 presents a flattened oval appearance, wider in front than behind. 

 The oval is formed by the somewhat raised edges of a surrounding 

 keel, the central part broadly convex, with a depression on either 

 side and towards the rear. Another keel runs nearly parallel to the 

 sinuous lower margin and not very distant from it. The sides of the 

 c.irapace below the upper keel are strongly inflexed, so as to leave 

 only a long narrow opening occupied by the maxillipeds. The 

 stomach appeared to be dilated with food, including foraminifera and 

 what looked like the dentate fingers of some crustacean, the horny 

 nature of which had defied digestion. The second to the fifth 

 pedigerous segments successively narrowed and depressed have the 

 lateral angles more or less rounded. The pleon segments show 

 faint serration of the front angles, the fifth segment the longest, 

 the telsonic pentagonal, the two combined not quite as long as the 

 peduncle of the uropods. 



First antenna very small, flagellum three-jointed, its terminal 

 joint and the one-jointed accessory flagellum minute. Second 

 antennas those of a male not fully adult. 



Upper lip with obtuse-angled margin. Mandibles with the generic 

 character. 



First maxilla with bisetose palp ; on the inner plate one of the 



