204 MEMOISS OF THE QUEENSLAND MUSEUM. 



someAvhat nearer the base than apex, and one side of the base is produced into a 

 short spine on to the shorter side of the tenth ; the two joints, however, are so 

 closely applied together that it is difficult to see their junctional parts. In my 

 table would be associated with II. pallipes, but from the position in which the 

 basal spine of the eleventh joint is visible, on that species, the apical portion of 

 :J:ie joint seems set at a tangent, very different from that of the present species ; 

 H. f rater has a pale scutellum, but its muzzle is also pale; H. minor is more 

 fragile, with thinner antennte, of which the two basal joints are entirely pale ; 

 H. major is a larger species, with legs mostly dark ; H. castor has the scutellum 

 black, legs mostly black, and two basal joints of antennge entirely pale ; all these 

 species also differ, inter se, in the eleventh joint of antennae. 



HETEROMASTIX TIBIALIS sp. nov. 



^ Black and fiavous. With rather dense, suberect pubescence. 



Head rather large, with a shallow interocular depression. Eyes large and 

 prominent. Antennce long and thin, ninth joint slightly longer than tenth, and 

 shorter than eleventh. Prothorax about twice as wide as long, margined through- 

 out; with distinct, submarginal punctures. Elytra almost parallel-sided to near 

 apex; with dense and sharply defined punctures of moderate size, becoming 

 very small on tips. Front tihice dilated to apex and notched there, basal joint of 

 front tarsi strongly incurved on one side. Length ( (J 9 ) > 5-5-5 mm. 



9 Differs in having the head smaller, with smaller and less prominent 

 eyes, antennae shorter, subapical segment of abdomen not notched in middle, 

 front tarsi only slightly thickened at apex and not notched, and basal joint of 

 front tarsi symmetrical. 



Ilab. — New South Wales: Dorrigo (W. Heron); Tweed River (A. M. 

 Lea). — Type, 7. 11870 in South Australian Museum; cotype, C/2298 in Queens- 

 land Museum. 



The black parts are the head (except part of its under surface), antenna?, 

 palpi, metasternum, and abdomen; the apical sixth of elytra, apical half of 

 tibiae, and the tarsi, are more or less deeplj'- infuscated or blackish. In the male 

 the antennae almost extend to the tips of the elytra ; the notch, at the tip of its 

 front tibiae, has proceeding backwards from it a narrow groove on each side to 

 about the apical third (as if the tibia had been split), the tibia itself is some- 

 what produced on one side of apex. The general appearance is somewhat as in 

 some forms of H. luridicolUs, but the antennae of both sexes are simple. 



A male from Queensland (Gympie) appears to belong to this species, 

 but has the flavous parts brighter, almost the whole of the apical half of elytra 

 black, tibiae infuscated only at tips, the front ones somewhat thicker at apex, 

 not longitudinally impressed near apex, but quite as strongly notched there, 

 and the basal joint of front tarsi longer and more strongly curved. 



