338 The Insect Fauna of Van Diemen^s Land. 



labrum ; tliese cliaracteristics place it in the group of tlie 

 Pericalidts (Hope^, Col. Manuel^ II. p. 105.) The missing 

 tooth in the rim of the mentum assimilate it with the 

 Pericalus and Beleoptenus, (Nycteis Lap.) but it dijBFers 

 from these and aU other genera of the same group in the 

 shortness of the lateral segments of the chin^ the size of the 

 eyes^ the shape of the neckplate^ the length of the hinder 

 feet, &c., and it forms a distinct and very peculiar genus. 

 The labrum is rather longer than broad, a little notched at 

 each lateral tip, and almost entirely covering the mandi- 

 bles. The lateral segments of the chin are short and small, 

 bent inwards : the anterior space smooth. 



Comparatively speaking, the maxillary palpi are short; the 

 secondjoint is rather short — ^the third very short, the fourth 

 as long as (all) the rest put together, and pointed ; of the 

 labial palpi, the second joint is rather long and thick, cyl- 

 indrical, the third rather shorter and thiimer, pointed. The 

 antennge are short, reaching only to the base of the wing- 

 cases • the first joint is rather thick, the second and third are 

 thinner than the following ones, which are rather com- 

 pressed. The head is broader than the neck-plate, the 

 eyes are very convex and protuberant. The neck-plate is 

 narrow and narrowing posteriorly, it is provided laterally, 

 in front, with a tooth-shaped, angular projection, and at the 

 hinder part, immediately before the base, with a very pro- 

 minent sharp tooth, The wing-cases are rather broad, flat, 

 slanting towards the tip, and somewhat hollowed. The 

 feet are simple, thin, the hinder feet half as long again as 

 the thighs ; in the male the fore feet are rather broad. 



