68 LYCID^. 



the sides red and somewhat reflexed. Elytra long and rather wide 

 behind ; the second, fourth, and sixth costfe are much stronger and 

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



The two male examples have the disk of each elytron more or 

 less black ; the penultimate segment of the abdomen is notched in 

 the middle. 



The two females* have the elytra a little less ample, and with 

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

 less strongly dentate. 



Trichalus sulcatus. 

 (Plate XVI. fig. 8.) 

 Waterh., Trcms. Ent. Soc, 1877, p. 83, pi. ii. figs. 102-105, 



Ochraceus ; antennis, tibiis, tarsis, abdomine elytrorumque apice 

 nigris ; rostro fere nullo ; thorace quadriimpresso, medio sulcato ; 

 elytris septemcostatis, costis alternis minus elevatis, costa juxta 

 suturam basi trifida, interstitiis reticulato-punctatis. cJ > $ • 



Long. 6 lin. 



Var. Abdomine in parte antennisque basi flavis. 



Hab. Brisbane, Port Essington. 



Head somewhat less engaged in the 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- 

 pression 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 antennae and nearly the whole abdomen are yellow. 



Trichalus acutangulus. 

 (Plate XVII. fig. 1.) 

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



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

 ginibus reflexis supra granulato-pmictatis, angulis posticis valde 

 acutis ; scutello subquadrato, apice triangulariter emarginato ; ely- 

 tris opacis septemcostatis, costa prima basi trifurcata. 



Long. 4| lin. 



Hab. Dorey, New 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 costae of the elytra are more distinct and 



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

 hat they belong to the same species. 



