CRUSTACEA OF NEW ZEALAND. 241 



the meros and is similarly furnished with setae, but those on the posterior margin are 

 rather stouter than in the meros. The propodos is longer than the carpus and rather 

 more slender; its anterior margin bears six fine setae and the posterior margin six 

 groups, each containing one stout seta and usually one or two small ones. The dactylos 

 is of average length, very acute, with the terminal unguis imperfectly defined ; on the 

 outer margin, near the base, it bears a single seta, sparingly plumose at the end. 



The second perceopod is similar in all respects to the first. 



The third, fourth, and fifth pereeopoda are all similar to each other, but each is 

 larger than the preceding ; each appears to have only one gill-plate. Fig. 6 represents 

 the third percBopod and may be taken as a sample. The coxa is normally deep, distinctly 

 bilobcd, the posterior lobe being i-ather the larger. The basos is considerably expanded, 

 oval in shape, about two-thirds as broad as long ; its anterior margin bears nine or ten 

 stout setae ; the posterior margin minutely serrate and having a small seta in each 

 serration. The ischium as usual. The meros is rather broad, the postero-distal angle 

 somewhat produced, both margins with groups of long stout setae. The carpus is longer 

 than the meros, but much narrower ; the propodos somewhat longer than the carpus ; 

 both bear groups of long stout setae on both margins, those on the anterior margin being 

 larger than those on the posterior mai'gin. The dactylos is like that of the first perseopod, 

 but bears three small setae on the outer margin in addition to the plumose one near the base. 



The first jyleopod is of the usual form ; the peduncle is rather short and has both 

 margins free from setae; there are two coupling-spines, each bearing three or four teeth; 

 the first joint of the inner ramus bears two cleft spines ; the iimer ramus is slightly 

 longer than the outer. 



The second and third pleopoda are similar to the first. 



The_^/"s^ itrojjod (fig. 7) has the peduncle long and slender, much longer than the 

 rami ; its upper surface is flat or slightly concave ; both the upper margins supplied with 

 spines. In the large male there were only three or four spines on each margin, but in 

 females the spines are usually much more nvimerous (compare PI. XXIII. figs. 7, 16). 

 The two rami are similar, with spines on both margins and longer spines at the ends ; 

 the outer ramus is a little shorter than the inner. 



The second uropod (fig. 8) is shorter than the first and has the outer ramus not 

 much more than half as long as the inner. It is supplied with setse in a similar manner 

 to the first uropod. 



The third nrojwd (fig. 9) reaches further back than the others, the peduncle 

 reaching as far as the ends of the first and second uropods ; it bears spine-like setae on 

 both the upper margins. The rami arc longer than the peduncle, somewhat broad, 

 narrowing gradually to the ends, which are acute and liear no setae ; both margins of each 

 bear three or four tufts of small spines. In the male specimen drawn the outer ramus 

 is somewhat shorter than the inner, but in females the two rami are of about the same 

 length and the whole uropod is rather longer and more slender (compare figs. 9, 11, 

 PI. XXIII.). 



The telson (see fig. 17) is short, not reaching to the end of the peduncle of the third 

 uropod ; it is nearly rectangular, rather broader than long ; the angles at the extremity 



