24 A. 0. WALKER. 



' As the single specimen in the ' Southern Cross ' collection was not dissected, the 

 following additional details are given. The specimen from which they are taken was not 

 full grown, and differs from the larger in the absence of the prominent convexity of the 

 lower part of the fifth side-plate and of the dorsal carina, except on the third pleon 

 segment. 



Upper antennse : First joint of the peduncle longer than the remaining two, 

 swollen at the base on the lower margin ; second nearly twice as long as the third ; 

 both have the upper margin produced and notched. Flagellum 28-jointed. 



Lower antennse : Basal joint produced on the inner side beyond the first joint, the 

 upper margin in both forming an acute tooth ; second joint rather longer and thicker 

 than the third, the upper margin of which is produced and notched. 



Mandibles : The palp stout, the second joint longer than the third, otherwise the 

 mouth organs and maxillipeds are nearly as in E. eomigera (Fabr.). 



Gnathopods nearly resemble those of E. cornigera ; the hand of the second pair is 

 shorter and wider at the distal end than that of the first, and i.s finely denticulate at 

 the rounded and spinous palmar angle. 



Third perseopods : Side plates rhomboidal ; first joint with a long tooth-like 

 process directed downwards from the upper part of the hind margin, which terminates 

 in a sharp tooth. 



Fourth perseopods like the third, except the side plate. 



Fifth perseopods : Side plates rather wider at the top than the widest part of the 

 first joint, narrowing downwards ; first joint expanded above, narrowing abruptly near 

 the middle, whence the hind margin curves outwards and ends in a tooth. 



First uropods : Rami subequal, longer than the peduncle, narrow lanceolate, 

 fringed with short spines on both margins. 



Second uropods : Inner ramus not reaching the end of the first uropods ; outer less 

 than half as long and much narrower than the inner. 



Third uropods not reaching the end of the longer ramus of the second pair, 

 broadly lanceolate, subequal, longer than the peduncle, which has a prominent tooth. 



Telson reaching to the base of the rami of the third uropods, tapering considerably 

 and notched at the tip. 



Length of the specimen described, 25 mm. 



EPIMERIA MACRODONTA. (PI. 8, fig. 14.) 



/:/iiiiiirin iiii/r, <>,/u n't/, A. 0. Walker, Aim. and Mag. Nat. Hist. XVIII. (1!)OG), p. HI. 



Jan. 22, 1902, 500 fm., three; W.Q., 4 Sept., 1903, Hole 12, one. 



All the segments of mesosome and pleou, with the exception of the first two 

 segments, of which the first is twice as long as the second, armed with lateral teeth, 

 increasing in length backwards, with longer dorsal teeth, curved and directed upwards 

 and backwards ; those of the last mesosome and first two pleou segments the longest. 



