572 



length of the scutellum ; its finer sculpture on some specimens 

 resembles fine layers of plates, but on others the laminate 

 arrangement is scarcely evident ; the medio-apical tubercle on 

 three males is single, on three other males double, the two 

 nodes placed longitudinally, the hind one upright, the front 

 one overhanging the head. On one male the prothoracic 

 excavation is much smaller and shallower than usual, and 

 only occupies about three-fifths the length of the segment, its 

 apical tubercle is very small and there are some fairly distinct 

 punctures on the elytra, with the striation (although feeble) 

 more evident and distinctly geminate towards the base. 



Cheiroplatys castaneus, n. sp. 

 PL xxxiv., fig. 36. 



(5 . Bright-castaneous and highly polished. Upper- 

 surface and pygidium -glabrous; under-surface and legs with 

 numerous, but irregularly distributed, reddish bristles. 



Head transversely rugose ; clypeus with sides strongly 

 obliquely decreasing in width to apex, which is rather narrow 

 and finely serrated, its disc with numerous transverse costae ; 

 mentum rather prominent. Antennae ten-, club three- jointed, 

 sixth and seventh joints very thin. Prothorax about once 

 and one-half as wide as long, sides strongly rounded, front 

 angles obtusely produced, the hind ones rounded off ; disc with 

 a large flat-bottomed excavation occupying about two-thirds 

 the width and three-fifths the length of the segment, its front 

 with an obtuse tubercle ; with rather small and not very 

 numerous punctures, becoming larger and crowded at apex. 

 Elytra with sutural and lateral striae deep and well denned, 

 the others rather feeble and geminate in arrangement, with 

 series of rather small punctures in the striae, but becoming 

 more numerous and irregular on apex and sides ; wrinkled 

 about shoulders. Pygidium with sharply defined and not very 

 dense punctures, but becoming crowded at basal angles. 

 Abdomen with apical segment sloping to base, and with 

 numerous punctures there, a conspicuous row of setae near 

 apex, and another at tip of pygidium. Front tibiae with 

 three strongly rounded teeth, spurs to four hind ones wide and 

 unequal ; basal joint of four hind tarsi strongly dilated 

 externally. Length, 17 mm. 



Bab. — Queensland: Cairns district (A. M. Lea). Type 

 (unique), I. 2308. 



About the size of j it venous, but more brightly coloured, 

 excavation wider and flat-bottomed, punctures much smaller 

 and sparser, elytral sculpture much finer and clypeus different 

 at apex ; the serrations there are nine in number on the type, 



