Victorian Fresh-iuater Amphipoda. 241 



The palp is rather narrow, the first joint short, and tufted 

 with setae at the outer distal angle, the second narrows slightly 

 distally, its inner margin is thickly setose, the outer margin 

 distally tufted, and at half its length there are a few setae ; the 

 third joint is only very slightly shorter than the preceding ones, 

 the distal margin is produced to a conspicuous apically-rounded 

 hyaline plate, the surface of which is thickly furred ; along the 

 whole length of the inner margin, also at the apex, the outer 

 distal margin, and at a few places on the upper surface there are 

 long setae. The terminal joint is long and unguiculate, and its 

 inner margin has three stiff setae, and in this respect is similar 

 to the dactylus of each of the pereiopoda. 



Gnathopoda. — The first pair of coxal plates have the anterior 

 and posterior margins narrowing distally and merging into the 

 evenly rounded inferior margin which is fringed with numerous 

 long setae and one or two little spines. The coxal plates of the 

 second pair have the anterior and posterior margin straight and 

 parallel, the corners broadly rounded, and the inferior margin 

 straight and setose, and on the posterior rounded corner there 

 are a few short spines. 



First Peraeopoda. — These are longer than the gnathopods. 

 The coxal plate is twice as deep as broad the front and hind 

 margins parallel, the inferior margin broadly rounded, and the 

 posterior half fringed with long setae. The merus has a few 

 spinules at three equidistant places along the anterior margin, 

 and the posterior margin has four fascicles of spinules. The 

 carpus has five fascicles of spinules along the posterior margin, 

 and the anterior margin is unclothed except at its distal angle. 

 The propodus has short, spines at eight equidistant places along 

 the posterior margin, and the anterior margin has a bunch of 

 long ones medianly and also at the distal angle. The dactylus 

 has three stout spines on its posterior or inner margin, and this 

 is characteristic of each of the succeeding peraeopods. 



Second Peraeopoda. — The coxal plate is very large, almost as 

 wide as deep, the anterior margin widening slightly distally, the 

 posterior margin deeply excavated, and the inferior margin very 

 slightly curved and free from setae. In other respects they are 

 similar to the first pair. 



