GENUS AND SPECIES FROM NEW ZEALAND. 335 



setse and a few smaller- ones on the posterioi- margin, and a group o£ long 

 setse at the antero-distal angle; the propod is slightly narrower at the 

 base than the carpus, it narrows distally and has the palm oblique, straight, 

 or slightly concave, defined by two stout spines, and fringed with slender 

 seta?, on the anterior margin there are three obliquely transverse rows of 

 setse and along the centre of the lateral surface a long row of short setse. 

 The arrangement of the sota3 on the propod is practically tlie same as that 

 in Paradexamine pacijica (G. M. Thomson). 



The second gnathopod is almost identical in size and form with the first. 



The Ji,rst perceopod (fig. 11) has the side plate convex in front and slightly 

 concave behind, the limb is short and stout, the carpus less than half as lono- 

 as the propod, the dactyl particularly strong, about two-thirds as long as the 

 propod and bent back upon it so as to form with the three groups of spines 

 on the propod a very efficient grasping organ. 



The second perceopod (fig. 12) is similar but has the side plate broader 

 and produced at the lower posterior angle into a broad rounded lobe. 



The third peripopod (fig. 13) is considerably longer than the preceding one, 

 its side-plate has the anterior lobe produced downwards below the posterior 

 lobe which bears two or three small spines on its lower margin, the second 

 joint is moderately broad, its anterior margin slightly convex and bearing- 

 six groups of short stout spines, posterior margin nearly straight and without 

 spines ; carpus shorter than the propod ; the latter and the dactyl are similar 

 to those of the preceding perseopoda. 



The fourth loeixeopod (fig. 14) is similar to the third but slightly longer 

 and has the posterior margin of the second joint slightly convex. 



The fifth perceopod (fig. 15) is similar to the preceding, but has the second 

 joint narrower and its posterior margin slightly concave. 



The uropoda (figs. 16, 17, 18, 18 a) are similar in character to those found 

 in other species of the Dexam.inidae, the first pair reaches a little beyond the 

 extremity of the second and as far as the end of the third, the end of the 

 second uropoda being on the level with the end of the telson. The pro- 

 poi'tions of the peduncles and their rami and the arrangement of the spines 

 thereon will be best learnt from the figures ; in the third uropoda (figs. 18 & 

 18 a) there is a group of stout spines at the distal end of the upper margin 

 of the peduncle ; the two rami are lanceolate and end acutely in the usual 

 manner, and bear numerous spines on each margin. 



The telson (fig. 19) has the normal shape, it is cleft for more than two- 

 thirds of its length, narrows greatly towards the extremity, each lobe has 

 a stout spine at the end and two or three similar spines at the lateral 

 margin ; in the specimen figured there are three on one side and only two 

 on the other. 



