240 Proceedings of tlte Royal Society of Victoria. 



A'landibks. — The left has the outer cutting edge divided into 

 four teeth, the inner or secondary edge into four smaller teeth, 

 and the spine row has seven densely plumose spines. The right 

 mandible has the cutting edge of four teeth, the secondary plate 

 cleft into two serrated edges, and the spine row consists of about 

 five spines; on one side of the molar tubercle there is a single 

 very long plumose setae. The palp is long, the hrst joint short, 

 the second more than twice the length of the first, and the third 

 broad, and slightly less in length than the second. 



Posterior Lip.— The outer lobes are widely gaping, the ends 

 almost truncated and bearing a row of twelve stout, blunt 

 incurved spinules, and more proximally many setae; the inner 

 lobes are very short and broad. 



First Maxillae. — The inner lobe of each is short, conical, 

 apically tipped with two long plumose setae, and the inner 

 surface clothed with fine simple setae. The outer lobe bears 

 nine denticulated spines. The palp of the left side is divided at 

 the end into five teeth, the outermost one being longer than the 

 rest and it springs from below the base line of the others, also 

 close to the end on the outer side there is a long spinule. The 

 right palp is apically beset with eight simple spinules. 



Second Maxillae. — The inner lobe is of equal width to the 

 outer, its inner margin is freely setose, and the sunmiit has very 

 many long tine apparently siinple spines and two stouter plumose 

 ones at the inner angle. The outer lobe is apically crowded 

 with very many long curved spines, most of which are simple, 

 but some show slight pectinations under high magnification; the 

 outer margin has one short spinule near the end, and moi-e 

 proximally there is a number of short setae. 



Maxillipedes. — The inner plate is rather broad and extends to 

 somewhat beyond the first joint of the palp, and the end is 

 slightly rounded ; this has on its inner half three long teeth, and 

 not more than thi-ee plumose setae, and on the outer half there 

 are three very long simple spines ; along the distal inner margin 

 there is the usual row of plumose setae. The outer lobe is of 

 normal shape and reaches slightly beyond the middle of the 

 second joint of the palp ; along its inner margin there is a row 

 of strong teeth which become gradually longer distally, and merge 

 beyond the apex into long slightly pectinated spines. 



