82 



Heteromastix nigriventris, n. sp. 



cJ . Flavous; apical three-fifths of elytra, abdomen, and 

 eight or nine apical joints of antennae black. With rather 

 short, pale pubescence. 



Head feebly impressed between eyes. Antennae moder- 

 ately long and thin, third joint slightly stouter than the 

 following ones. Prothorax about twice as wide as long, 

 margined throughout, sides slightly dilated to near apex, 

 and somewhat thickened near apex. Elytra slightly dilated 

 beyond the middle; with dense and small, but sharply denned 

 punctures. Length (d , 9), 2*5-3 mm. 



9 • Differs in having the head smaller, eyes less 

 prominent, antennae shorter, and in the abdomen. 



Hab. — Northern Queensland (Blackburn's collection), 

 Cairns (Dr. E. W. Ferguson). Type, I. 11871. 



The black part of the elytra is somewhat rounded in 

 front, so that the flavous portion is advanced along the sides 

 to beyond the middle; on some specimens some of the 

 antennal joints beyond the third are hardly more than 

 infuscated. In my table the entirely pale prothorax and 

 bicolorous elytra readily distinguish it from all species having 

 simple antennae; structurally it approaches H. pusillus; the 

 simple front legs readily distinguish it from H. tibialis. 



Heteroma.stix compar, n. sp. 



d . Black ; head, prothorax, scutellum, mesosternum, 

 two basal joints of antennae, and knees flavous, rest of legs 

 more or les3 deeply infuscated. With short, ashen pubescence. 



Head with a narrow, oblique impression, on each side 

 of middle in front. Antennae rather long and thin, tenth 

 joint partly shining, and with a small fovea near apex. 

 Prothorax less than twice as wide as long, margins rather 

 wide at base and sides, and narrow across apex, sides widest 

 but not thickened near apex; with distinct, submarginal 

 punctures. Elytra parallel-sided to near apex; with dense 

 and sharply defined punctures of moderate size. Length, 

 2-75-3 mm. 



Hab. — Northern Queensland (Blackburn's collection), 

 Kuranda (F. P. Dodd). Type, I. 11874. 



The tenth joint of the antennae, on three males before 

 me, has a small subapical fovea or puncture on a small 

 shining place, on the type the joint itself is slightly longer 

 and thicker than the eleventh; on the other males it is noj 

 thicker, and is slightly shorter than the eleventh; on two 

 of them (including the type) the cephalic impressions are 

 almost conjoined in front to form a V, on the other they are 



