AMPHIPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 203 



but as they are both females of small size, and perhaps not fully mature, the identifica- 

 tion is not free from doubt. They agree generally with the description of the species 

 in Das Tierreich Amphipoda, but appear to differ in the following points : — 



The upper antenna is rather longer and stouter than the lower ; the flagellum is 

 very small, and consists of one short joint and two, or perhaps three, very minute ones. 



The lower antenna has the fifth joint of the peduncle a little longer than the fourth, 

 and both considerably longer than the third ; the flagellum consists of one small joint, 

 followed by one or more very minute ones. There are no serrations to be seen on the 

 lower antenna, the animal in this point agreeing with the description. 



The mouth parts were not examined. 



The first gnathopod is long and slender, agreeing well with the description. 



The second gnathopod has the carpus as long, and at distal end as broad, as the 

 propod. The inner branch of the third uropod scarcely reaches beyond the extremity 

 of the preceding uropods ; its upper margin is minutely serrulate ; the outer branch is 

 more slender, and is about two-thirds as long. Very minute serrulations are present on 

 the inner branches of the first and second uropods also. 



The telson apparently agrees with the description, but could not be fully examined. 



It is }ierhaps doubtful if this species is really distinct from C. pusilla (Grube), from 

 the North Atlantic and the Mediterranean, but the Scotia specimens appear to diff"er 

 from it in the proportions of the joints of the lower antenna, and in the absence of 

 serrations on the peduncle. On the other hand, the second gnathopods and the 

 uropods agree quite as well, or perhaps better, with C. pnsilla than with G. hrazieri. 

 Another species, C. hamifera Kossmann, has been recorded from the Eed Sea, but is 

 thought to be probably an immature male of C. 2^usiUa. All the three species were 

 combined under the name C. j^usilla by Della Valle in 1893. 



C. hrazieri was described from the east coast of Australia. I have taken a specimen 

 in Otago Harbour, New Zealand, that probably belongs to the same species ; in the 

 living animal the eye was red as in C. pusilla. 



Genus Liljeborcia Bate, 18G2. 



Liljehorgia duhia (Haswell). 



Eusirus duhiiis Haswell, 1880, \\ 331, pi. xx. fig. 3. 



Liljehurgia duhia Stebbing, 1906, p. 233, 1910a, p. 638, and 1910b, p. 454. 



,, Walker, 1907, p. 35. 



,, Chilton, 1909a, p. 619. 



South Orkneys, Scotia Bay, Station 325; dredge, 9-10 fathoms. June 1903. 



One imperfect specimen, anterior half of body only ; the length of the whole 



animal would be fully 15 mm. 



This fragment seems to belong, without doubt, to this species ; it agrees in the 



peduncles of the antennae and in the narrower basal joints of the third to fifth 



(ROY. SOC. EUIN. TKANS., VOL. XLVIII., 485.) 



