CRUSTACEA OF ]SEW ZEALAND. 199 



The maxilllpedes arc practically identical with those of P. assimills, but the " grappliug 

 setae " are slightly dilForent, being long curved setae slightly hooked at the end ; they thus 

 resemble those of P. australis, but are more slender. In the specimen dissected there 

 are two on one side and three on the other. P. assimills has two on each side, and they 

 are straight, Avith hooks at the end. 



The first pair of legs of the female (PI. XVIII. figs. 7, 8) are much more slender than in 

 P. asslmilis. The coxa is small, shallow, partly cleft below and ankylosed to the body- 

 segment. The basos is narrow oblong, about three times as long as broad, and is almost 

 free from setae except a small tuft at the extremity on the posterior margin. The ischium 

 is nearly as broad as the basos ; posterior margin straight, with three or four minute 

 spinviles ; anterior margin sliglitly produced in the centre and bearing a stout seta at this 

 point. The ?»ero.5 is subtriangiilar, and has the posterior margin straight, with a few setae 

 at the extremity ; the anterior margin is convex and produced distally into a rounded 

 lobe extending about halfway along the carpus, the edge of this lobe next the carpus 

 being fringed with stout setae. The carpus is suboblong, its junction with the meros 

 being oblique ; on the posterior margin there is a small seta near the base and a small 

 tuft of larger setae toward the extremity. The ])ropodos is subtriangular, expanding 

 distally, longer than the meros ; the anterior margin convex, especially toward the base, 

 and bearing one or two minute setae and a small tuft at the base of the dactylos ; the 

 j)Osterior margin is straight, produced at the extremity to define the palm, the postero- 

 distal angle being thickly covered with setae. The palm is oblique, concave, and bears five 

 or six very acute setae with expanded bases, those nearest the base of the dactylos being 

 the best marked, the others gradually becoming more slender until they are indis- 

 tinguishable from the ordinary stout setae at the postero-distal angle ; in addition to these 

 the palms bear a few simple setae. The dactylos is somewhat stout, longer than the palm, 

 both margins bearing a few spinules, the extremity being separated off as a distinct 

 tooth. 



The peculiar setae on the palm are of the same kind as those described in the male of 

 Phreatolcus australis [26, pi. xxiv. fig. 5 a], but they are not so stout and well marked. 

 The female of that species has the first pair of legs very like those described above, but 

 shorter and stouter and more spiniform, and the palm more oblique and not concave. 



The second pair of legs {Wq. Q) in YViiher longer than the first pair; the coxa, basos, 

 and ischium are similar to the corresponding joints of the first pair ; the meros is sub- 

 triangular, about three-fourths as long as the ischium, posterior margin straight and 

 fringed with a few setae, the anterior margin slightly convex, and with the antero-distal 

 ansjle slightly produced, a few setae on the margin and at the extremity ; the carpus is 

 oblong, not so long as the meros, posterior margin straight and with a few setae, anterior 

 margin nearly straight, and with setae at the extremity only ; propodos similar to the 

 carpus but usually a little longer, the extremity produced into a small triangular lobe at 

 the side of the dactylos ; dactylos nearly half as long as the propodos, cxti-emity forming 

 a distinct nail, with a small tooth at its base. 



The third, and fourth pairs ff tegs are similar to the second and of the same size. 



The fifth, sixth, and seventh pairs of le^s (see fig. 10) are similar to each other, but 



