62 



(there are six of the preceding species and three of the present 

 before me, and the differences noted are constant) ; in my 

 table would be placed with M. posticalis, which has 

 darker legs and under-surface, median areolet of prothorax 

 longer, etc. 



A female, from Stapleton (G. ^F. Hill), probably belongs 

 to this species, its colours are as in the type, except that 

 the basal joint of the antennae is obscurely pale (as it is 

 also on one of the males) ; its antennae are snorter, rather 

 wide, and the fourth to tenth joints are moderately serrated, 

 the eleventh joint is almost twice the length of the tenth, 

 the abdomen is wider, its subapical segment is not notched 

 and the legs are shorter. 



TriChalus infaustus, n. sp. 



<3 . Sooty-black; prothorax, and rather more than basal 

 half of elytra of a dingy flavous. 



Antennae moderately long, third to tenth joints strongly 

 serrated. Prothorax slightly longer than apical width, sides 

 considerably elevated near base, and somewhat sinuous, front 

 angles rounded off, hind ones acute, central areolet continued 

 to apical fifth and connected with apex by a short costa. 

 Elytra rather thin, slightly narrowed in middle, subsutural 

 costa trifurcate at basal fourth. Length, 9*5-1 0'5 mm. 



Hob. — Queensland: Cairns district (A. M. Lea), 

 Atherton (Dr. E. Mjoberg). Type, I. 12277. 



In my tabled would be placed with T. ftavopictus, which 

 is a larger species, with wider prothorax, elytra more dilated 

 posteriorly, and less . of apex dark ; the dark part is not 

 sharply limited, but is continued almost to the middle as an 

 infuscation; on both specimens before me there is an 

 infuscated stain on the disc of the prothorax, and the 

 scutellum is dark. 



Trichalus qtjadricavus, n. sp. 



§. Black; prothorax, scutellum, basal four-fifths of 

 elytra, front and middle coxae, and trochanters flavous. 



Antennae rather long, third joint about twice as long as 

 its apical width, and slightly longer than fourth, the others to 

 tenth slightly decreasing in length and width but none trans- 

 verse, eleventh about half as long again as tenth. Prothorax 

 about as long as the apical width, front angles obtuse, hind 

 ones acute; central areolet divided into two parts. Elytra 

 parallel-sided to near apex, alternate interstices distinctly 

 elevated, the subsutural one trifurcate at basal third. 

 Length, 8 mm. 



(6) Lea, Trans. Ent. Soc. Loud., 1909, p. 90. 



