193 



punctures; interstices regular, strongly convex and impunc- 

 tate; a fine marginal membrane not extending to base. 

 Pygidium and propygidium with small, dense, sublaminate 

 punctures. Mesosternum with a strong process produced to 

 front of front coxae, flat on lower-surface, arcuate above, and 

 truncate at apex. Legs rather short, front tibiae strongly 

 bidentate. Length, 14-16 mm. 



Hab. — Queensland: Cairns district (F. P. Dodd, H. H. 

 D. Griffith, and A. M. Lea). Type, I. 4840. 



One specimen bears a note by the late Rev. T, Blackburn, 

 "Not XylonychuSy probably female of gen. nov. very near 

 Colymbomorpha," but as there appear to be only females of 

 the species before me, I think it desirable to refer them to 

 Stethaspis ( = Xyloiiychus), from all the species of which they 

 may be distinguished by the dense scales at the sides of the 

 under-surf ace ; the intercoxal process of the mesosternum is 

 more produced than in eucalypti, being almost as in Phyllo- 

 cocerus purpurascens. The elytra have a slight metallic gloss, 

 but their margins are conspicuously metallic. The scales are 

 wide, and conspicuously dense, white, and overlapping at the 

 sides of the under-surf ace, and on the middle of the pro- 

 pygidium, they are almost as dense on the sides of the pro- 

 notum, but individually narrower; on the rest of the upper- 

 surface they are sparser and subsetose in character ; on the 

 elytra they are confined to the striae, on the pygidium and 

 the rest of the propygidium they are fairly dense; there are 

 usually three long hairs on each side of the prothorax. On 

 the type there are seven punctures on the scutellum, but on 

 the other specimens they are more numerous. 



In a recent letter Mr. G. J. Arrow remarked, "It seems 

 to me quite unnecessary to make a new genus for S. squamosus ; 

 we have four specimens of it, from Kuranda ; they include 

 both sexes, but the antennae of the male scarcely differ from 

 those of the female." 



COLYMBOMOKPHA SPLENDIDA, 11. sp. 



c? • Brilliant purplish-green with a coppery gloss; front 

 of head, sides of prothorax, propygidium, pygidium, under- 

 surface, and legs (hind tibiae and parts of tarsi excepted) 

 flavous, with a coppery-green gloss. Upper-surface glabrous, 

 under-surf ace almost so. 



Head with sparse and small, but sharply-defined punc- 

 tures. Clypeus about twice as wide as long, front truncated, 

 disc rather strongly convex ; punctures at apex and sides 

 denser and stronger than between eyes. Labrum on the same 

 plane as clypeus, narrow, apex gently incurved. Antennae 

 nine-, flabellum six- jointed, the rami each about as long as 



H 



