Bfl LTCl 



the rides red and Bomewhat reflexed. Elytra long and rather wide 

 behind ; the second, fourth, and Bixth ooetaB are much Btronger and 

 more regular than the others ; the interstices reticulate-punotate. 



The two male examples haw the dish of eaoh elytron more or 

 Lees black; the penultimate segment of the abdomen Is notched in 

 the middle. 



The t\\<> females* have the elytra a Little leas ample, and with 

 less black on the disk. The abdomen simple. The antennae are 

 1«-ns s-tron^ly dent) 



Trichalus sulcatus. 



(Plate XV i. fig. 8.) 



Waterh., T,a>t<. Ent. Soc., L877, p. 83, pi. ii. figs. 102-105 



Oohraceus ; antennis, tibiis, tarsia, abdomine elytrorumque apice 

 niirri- ; roatro fere niillo ; thorace (juadriiinpresso, medio sulcato ; 

 elytris Beptemcostatis, costia alternia minus elevatis, costa juxta 

 Buturam baai trifida, interstitiis reticulato-punctatis. 3 , 2 • 



Long. 6 lin. 

 . Abdomine in parte antennisque baai flavis. 



Hah. Brisbane, Port Easington. 



Head somewhat Leas engaged in tbe thorax than in most species 



of this group ; eyes not very large. Antennae rather long and stout. 



Thorax moderately reflexed at the sides, with a longitudinal im- 



rion reaching nearly from the base to the apex. Scutellum 



yellow. 



The antennae are almost identical in the two sexes; the male has 

 a small notch in the middle of the penultimate abdominal segment. 



The female example from Port Essington has the second costa of 

 the elytra remarkably thickened and elevated near the base. The 

 base of the antenna? and nearly the whole abdomen are yellow. 



Trichalus acutangulus. 

 (Plate XVII. fig. 1.) 

 Waterh., Trans. Ent. Soc, 1878, p. 114. 



Flavus ; antennis flavo-fuscis ; thorace antice angustato, mar- 

 ginibus reflexis supra granulato-punctatis, angulis posticis valde 

 acutis ; scutello subquadrato, apice triangulariter emarginato ; ely- 

 tris opacis septemcostatis, costa prima basi trifurcata. 



Long. 4| lin. 



Hub. Dorey, Xew Guinea ( Wallace). 



Thorax shining in the middle, with a single mesial lanceolate 

 areolet, the anterior and lateral margins thickly punctured. The 

 second, fourth, and sixth costa? of the elytra are more distinct and 



* These specimens were not received with the males, but 1 have no doubt 

 hat they belong to t ho same species. 



