96 Mr. Arthur M. Lea's Revision of the 



NUBICOLLIS, Fairm. (Xantheros), P. N., 1877, II, p. 167 ; 

 J. M. G, 1879, p. 99. 



Hah. Queensland : Peel Island. 



OCHREATUS (Xantheros), Fairm., P. N., 1877, II, p. 167; 

 Journ. Mus. Godeff., 1879, p. 99. 



Hah. N.S. Wales : Sydney. 



INSIONIS, Lea, P.L.S., N.S.W., 1874, p. GOL {Fig. 89.) 

 Hab. N.S. Wales : Armidale. 



Trichalus bifurcatus, n. sp. 



^ . Black ; base apex suture and margins of elytra red and, to 

 a less extent, the three discal costae on each. 



Antennae passing middle of elytra, strongly serrate, 2nd joint 

 distinct from above, 3rd very slightly longer than 4th. Prothorax 

 shining, feebly transverse, 3-areolate ; apex and apical angles rounded; 

 sides feebly and irregularly increasing in width to base ; basal 

 angles acute and obliquely produced. Scutellwn depressed, sides 

 increasing in width to apex — which is semicircular. Elytra long 

 and narrow, slightly diminishing in width to base and apex ; tri- 

 costate (quadricostate at base), the interspaces with double series of 

 subquadrate punctures, each separated by rather small ridges ; the 

 smaller sutural ridge or costa bifurcate at base, dividing the punc- 

 tures into three rows. Ahdmnen with the penultimate segment 

 feebly emarginate in middle of apex. 



Length 10 mm. 



HaJ). Tasmania : Huon River. 



The general appearance somewhat like a small specimen 

 of discoichus, but with the sutural costa bifurcate (instead 

 of trifurcate) at base ; a character which will readily 

 distinguish it from all previously described species. 



Trichalus semiatratus, n. sp. {Fiy. 27.) 



^ . Black ; prothorax scutellum and basal two-fifths of elytra 

 flavous. 



Eyes very large. Antennae strongly flabellale, extending to about 

 one-third from apex of elytra ; 2nd joint distinct, 3rd slightly longer 

 than 4th, its ramus about twice the length of itself, of the others 

 each is more than twice as long as the supporting joint ; 11th ^more 

 than twice the length (excluding its ramus) of 10th. Prothorax 



