On Amphipoda from the A uckland Islands, 



its base, tlie front and hind margins subparallel, the h\tter 

 with a spinous tubercle ; hand subtriangular, pahn very 

 oblique, straight, setose and spinous, and defined by two 

 stout spines ; liind margin about one-fourth as long as the 

 palm, with which it forms a rounded and setose angle. 

 Dactylus very stout, about two-thirds as lotig as the palm. 



Gnatliopod2 : side-]ilatesuborbicular. Second joint longer 

 than third and fourth united ; wrist very small, not produced 

 behind ; hand objjyriform, the width near the base nearly 

 three-fourths of the length; palm undefined; hind margin 

 almost straight, but swollen and rounded at the base, densely 

 setose. Dactylus about lialf as long as the hind margin. 



Female (with ova). — Antenna 1 reaching the end of the 

 fourth joint of the flagellum of ant. 2 ; flagellum 12-jointed. 



Gnathojjod 1 : side-plate rounded below, with a prominent 

 tooth on the up])er part of the hind margin. Second joint 

 stout, rather longer than the next two; wrist less than half 

 as large as the hand, the hind margin slightly produced ; 

 hand subovoid, front margin very convex, about twice as long 

 as the hind ; palm oblique, shorter than the hind margin. 

 Dactylus as long as the palm. 



Gnathopod 2 : side-plate and whole limb like gnathopod 1, 

 but rather larger. 



Perteupod 2 ; second joint narrow, fourth twice as wide as 

 the filth. Branchial vesicle wide-ovate. 



Pera3opod 5 : second joint as VAide as long, fourth and fifth 

 joints widening distally and terminated by a fringe of spines. 



Uropod 3 : ramus subequal to peduncle, 3 or 4 distal spines 

 on each. 



Telson divided to the base; divisions quadrate, with 

 rounded angles. 



Length of male 20 mm. ; female 12 mm. 



The form of gnathopod 1 in the male is the most salient 

 character. 



Genus Alloechestes, Dana. 

 AlloTchestes novizealandice, Dana. 



Enderby I., 19/3/04. U'wo males ; length 12 mm. 



It is difficult to see why Prof. Delia Vaile (and, doubtless 

 following him, iMr. G. M. Thompson*) should have referred 

 this species to Bya/e prevostii, M.-Edw. The structure of 

 the wrist in gnathopod 2, S , proves it to be an Allorchestes. 



* Trans. N. Z. Inst. 1898, vol. xxxi. pp. 197-207. 



