820 



THE VOYAGE OF H.M.S. CHALLENGER. 



Habitat— Station 169, July 10, 1874; lat. 37° 34' S., long. 179° 22' E.; off New 

 Zealand ; depth, 700 fathoms ; bottom, blue mud ; bottom temperature, 40°. One 

 specimen. Associated with Acanthephyra purpurea. Trawled. 



The rostrum gradually slopes upwards from a dorsal carina that commences at the 

 scarcely distinguishable cervical fossa, and continues smooth to the frontal crest, where it 

 is furnished with a series of spinules that are persistent to the apex ; the lower margin 

 is smooth throughout its length, and is fringed with hairs from base to apex. The 

 regions of the carapace are but imperfectly defined, and the frontal margin is furnished 

 with a tooth at the antennal and fronto-lateral angles. 



The ophthalmopoda are rather small. 



The first pair of antennas has the peduncle shorter than the rostrum by one-third of 

 its length, and supports a sharp-pointed stylocerite that reaches to the distal extremity of 

 the ophthalmus. 



The second pair of antennas has a scaphocerite that is subequal in length with the 

 rostrum. 



The second pair of gnathopoda does not reach to the extremity of the rostrum. 



The first pair of pereiopoda reaches by the length of the propodos beyond the 

 extremity of the scaphocerite ; it has the carpos smooth, the meros armed with two 

 teeth, of which the anterior stands near the middle, and the posterior halfway between 

 it and the ischial articulation ; the ischium is furnished with two teeth on the inner side 

 near the meral articulation, and one at the base near the basisal articulation. The other 

 pereiopoda are broken off, but one of the fourth pair has the ischial joint attached, and a 

 detached leg is present in the same bottle, broken off at the ischial articulation, and there- 

 fore probably the other part of it. As compared with that of some other species it is 

 rather short, the carpos being not one-third longer than the meros, which is sparsely 

 armed with a few sharp teeth ; the propodos is slender and the dactylos slightly 

 waved. 



The pleon is laterally compressed and has the third somite rather long and somewhat 

 produced over the fourth. 



The rest of the animal is too imperfect for description, since the posterior moiety of 

 the pleon and the rhipidura are broken off. 



