REPORT ON THE CXJMACEA. 65 



elongate. The terminal joint, together with its apical spine, forms a strong biarticulate 

 curved claw. 



In the male the two anterior of these pairs of legs are provided with well-developed 

 natatory exopodites, as in the preceding legs, and hence the basal joint of these legs is 

 considerably dilated to receive the strong muscles moving the exopodite. The last 

 pair of legs, on the other hand, exhil:)it a slender form quite similar to that in the 

 female. 



The pleopoda are quite wanting in both sexes. 



The uropoda have the scape unusually short and the branches very unequal, the 

 outer one being exceedingly small, though consisting of two well-defined joints. The 

 inner branch, on the other hand, is rather elongate, especially in the male, uniarticulate, 

 and provided with several small denticles along the inner edge, and a slender spine at 

 the tip. 



Habitat. — ^No less than eleven specimens of this little Cumacean were collected by 

 the late Dr. v. AVillemoes Suhm, on October 27, 1874, off Samboangan, Philippine 

 Islands, and preserA^ed by him in the above mentioned manner. All the specimens 

 were taken at the surface of the sea with the aid of the tow-net. 



Family VII. Campylaspid^. 



This family in many essential points diiFers considerably from the other families, both 

 as to the external appearance and the anatomical details. The enormous development 

 of the carapace affords a good external character. Of the anatomical detads the very 

 peculiar structure of the oral parts may be noted, as also of the maxillipeds and the 

 first pail" of gnathopoda. As to the legs, the first pair are not, as in other Cumacea, 

 distinguished by any considerable length, being on the whole, both in size and 

 structure, very similar to the second pair of gnathopoda. Also in the internal organisa- 

 tion there would seem to exist essential differences from other Cumacea. Thus, I 

 have found the liver to consist of only a single j^fiir of very large caeca, instead of 

 three pairs, as in the genus Diastijlis. The family comprises as yet but a single 

 genus, viz.: — 



Genus Campylaspis, G. 0. Sars, 1864. 



Gampylaspis, G. 0. Sars, Cm den aberrante Krebsdyrgruppe Cumacea og dens nordisk Arter, p. 75. 



Generic Characters. — Carapace strongly vaulted above, with the anterior part 

 more or less depressed and produced ; pseudorostral projection very short, obliquely 

 truncate ; inferior edges of carapace unarmed. Ocular lobe more or less produced along 



(zOOh. CHALL. EXP. — PART LV. — 1887.) I" 9 



