AMPIUPODA. 33 



In the description of this species I omitted to mention that in both pairs of 

 autenuw the second joint is produced d is tally on each side of the third joint in a 

 subacute lobe or tooth. 



ATYLOIDKS SKRRATICADDA. 

 AlyltUm wTff/JrtMfc/o, Stebbiiig. 



Gape Adare, 9 Jan. 1902, 20 fm., one; and 24 Feb. 1904, in Laminaria roots, 

 13-20 fm., several Cape Wadsworth, 15 Jan. 1902, 8-15 fms., one. 



In addition to the difference noted in the description of the specimens taken l>v 

 the ' Southern Cross* expedition at Cape Adare, viz., seven teeth instead of two on t lu- 

 ll in- 1 margin of the third pleon segment, the following may also lie mentioned : 



1. The eyes are hardly so large and vary much in depth of colour. 



2. The first joint of the upper antenna) has a strong tooth at the distal end of the 

 lower margin. 



3. The side-plates of the first and second gnathopods have more teeth on the 

 lower margins al>out seven on the first and four * on the second. The.se, however, may 

 be considered as merely local or age variations, and arc not, in my opinion, sufhYicut 

 to constitute a new species. The ' Challenger ' specimens from " off Mell>ourne " 

 measured } inch or about 6 mm., the largest of the Cape Adare ('Southern Cross') 

 being 15 mm. 



STUBBING i A URKUARIA. 



SUbbingia grtgaria, PfefTer, Krebw v. Sud-Georgien Die Amphipoden, Jahrbuch d. wimetmchaft. AnilulU-n 

 Hamburg, V. (1888), p. 110. 



W.Q., 29 Aug. 1902, Hole 12, two young specimens, length 6 mm. 



These specimens differ in several respects from Atyloidf* auxtrali* (Miers) an 

 descrilxxl by Stebbing (Chall. Rep. p. 914). The liosal joints of the flsgellum of the 

 upper antennae are longer than wide, and there is no secondary appendage, both of 

 which points agree with Pfeffcr's description, but not with Stcbbing's. The outer rnmi 

 of the third uropods are shorter than the inner. The telson is divided only one-third of 

 its length, with the tips of the divisions evenly rounded. In these last two points they 

 differ from both Stebbing's and Pfeffer's descriptions, but the specimens are too young 

 for any reliance to be placed on them. On the whole they agree better with Pfeffer's 

 species than Stebbing's, of the identity of which I am doubtful (w Chall. Rep. pp. 913, 

 914, and 1654). 



PONTOGKNEIA MAGELLANICA. (PI. 12, fig. 20.) 



Atyloprit mayeUanira, Stebbing. 

 Ponttyrneia moffrllanifa, Stebbing. 



W.Q., Hut Point, 13 Sept, 1902, one ; 23 Nov., 1902, one, length, 12 mm. Tent 

 Island, 3 Jan., 1904, three. 



This is a similar instance to the last species of small variations which are insufii- 



In a young ipociimtn there are only two. 



I 2 



