228 Proceedmgs of tlie Royal Society of Victoria. 



in the upper antennae which are peculiar to the family character 

 in being longer tlian the lower. In agreement with H. mihiwaka 

 the first maxilla does not possess a rudimentary uniarticulate palp, 

 but only a slight truncate projection without the vestige of a 

 joint and diflers in this respect from Professor S. I. Smith's 

 generic description. 



Supplementary Description. 



The A)iterio7- Lip is broad, deep and evenly rounded distally. 



Mandibles. — In the left-hand mandible the cutting-edge is 

 broad and composed of three large and three smaller teeth, the 

 secondary edge has six small teeth, and below this ridge are 

 three or four plumose spinules. In the right-hand mandible the 

 cutting-edge has six teeth and the secondary process is apically 

 cleft into two ridges, the outer one being finely serrated, and 

 ending laterally in a long pointed tooth, and the inner divided 

 into three stout teeth. Between this process and the molar 

 tubercle there are two long and a number of shorter plumose 

 spinules. The molar tubercle of each is stout, the end covered 

 with rows of very strong denticles, and on one side, near the 

 crown, there is a very long plumose seta. There is no trace of a 

 palp. 



The Posterior Lip is broad, the lobes closely set and distally 

 evenly rounded, and the inner margin and apex fringed with 

 short fine setae. 



First Maxillae. — The outer lobe is very long and apically 

 furnished with about eight toothed spines. Medianly on its 

 outer margin there is a slight projecting knob with truncated 

 summit, which indicates the rudimentary palp, but, after care- 

 fully examining several specimens, I failed to find any articu- 

 lating joint. The inner lobe is very narrow and short, being 

 about half the length of the outer lobe, and tipped by two long 

 and delicately plumed setae. 



Second Maxillae.- — The outer lobe is very narrow and tipped 

 with numerous long simple setae. The inner lobe is normally 

 broad, not reaching to the end of the outer lobe, its summit faces 

 obliquely, and is furmished with a row of nine pectinated setae 

 and a parallel row of simple setae, also at the distal inner angle 

 there is a long plumose seta. 



