646 



StJBANTARCTIC ISLANDS O^ NEW ZEALAND. 



[Crustacea. 



only one form of the female is known, and it is, I presume, mainly for this reason 

 Mr. Stebbing has united them all into one species. In this I am inclined to agree 

 with him ; but, if we are to be logical, the same method will have to be adopted in 

 several other cases among the Amphipoda. 



Genus Lembos, Bate, 1856. 

 Distribution. — In all seas. 



Lembos kergueleni (Stebbing). 



Ayitonoe kergueleni, Stebbing, Rep. " Challenger," xxix, p. 1087, pi. cxi, 

 1888; G. M. Thomson, Ann. & Mag. Nat. Hist,, ser. 7, x, p. 464, 

 1902. Lembos kergueleni, Stebbing, " Das Tierreich Amphipoda," 

 p. 598, 1906 ; Walker, Trans. Linn. Soc, xii, p. 337, pi. xliii, fig. 6, 

 1909. 



A specimen that appears undoubtedly to belong to this species was taken at the 

 Snares. Owing to an accident in mounting it, the specimen is in poor condition, but 

 the shape of the first gnathopod of the male so closely resembles the figure and 

 description given by Stebbing that I think there can be little doubt that it belongs 

 here. The rest of the animal, so far as can be made out, is also in general agreement 

 with his description, but the basos of the second gnathopod does not seem to be 

 specially dilated. 



The species was first taken at Kerguelen Island, and has since been recorded 

 by Mr. G. M. Thomson from the Bay of Islands, New Zealand. Quite recently 

 Mr. Walker has recorded it from two localities 

 in the Indian Ocean. 



I have also another specimen, dredged in 

 about 8 fathoms in Perseverance Harbour, 

 Campbell Island, that evidently belongs to this 

 genus, and is, I think, only a more fully de- 

 veloped male of this species, though the shape 

 of the first gnathopod (fig. 12a) is considerably 

 different. The carpus is much shortened and 

 the propod very large, longer than the rest of 

 the limb, and much swollen, forming a broad 

 oval, with the palm oblique ; the palm is defined 

 by a stout tooth, and from the centre of the 

 palm there arises a much longer tooth with 

 broadened base, the finger fitting into a groove 

 or depression on the inner side of these two 

 teeth ; a few long setae are found scattered on 

 the palm, and a tuft at the end of the anterior 



margin near the base of the finger and three ^^^ ^-^^^ gnathopod of fuiiy developed mile. 

 smaller setae are situated on the inner margin i26. Second gnathopod of fuUy developed male. 

 of the finger, but the rest of the gnathopod is 



almost completely free of setae. The second gnathopod (fig. 126) also presents 

 certain differences; the basos is slightly curved, broadly oblong, and has the 



Fig. 12. — Lembos kergueleni (Stebbing), 



