178 NEW SPECIES OF AUSTRALIAN COLROPTERA, I., 



though in size and general outline it is not unlike I\ Walkeri, 

 Breme, but it is easily distinguished by its smoother, opaque 

 surface, greater convexity (especially of apical declivity), border 

 of pronotum more reflexed than in that species. 



Encara nigrum, n.sp. 



Oval, dull black covered with brownish dust, except the under 

 part of tarsi which are clothed with red hair, and the legs which 

 are shiny black. Beneath dull black. 



^eac? transverse, minutely longitudinally rugose, widest in front 

 of eyes, lateral border reflexed, towards the apex narrowed and 

 rounded, clypeus straight. Eyes separated by about the diameter 

 of one (wider apart than in E, suhmaculatuni). Antennce short, 

 3rd joint fully as long as 4th and 5th jointly, apical four longer 

 than preceding. Prothorax 4x10 mm. (length measured at 

 centre, width at base). Disc convex, with central longitudinal 

 ridge strongly marked at base, finely and densely punctate (under 

 the pruinose dust). Lateral flange wide at base, sharply nar- 

 rowing to front angles, which enclose the head beyond insertions 

 of antennas, but not so closely as in E. suhmaculatum. Anterior 

 angles obtuse and blunt, posterior angles bluntly acute, sides 

 curving inwards and downwards at these angles. Width between 

 anterior angles 4 mm. Base strongly bisinuate. Scutellum large, 

 curvi-triangular punctate with two sides ridged. Elytra 11-12 x 

 10*11 mm. Same width at base as prothorax, then widening to 

 half way, thence roundly narrowing to apex; margins wide 

 except at apical third part, where they are narrower than in E. 

 suhmaculatum. Lateral border reflexed. Prominently ridged 

 at suture, this ridge causing extreme longitudinal convexit}', so 

 that viewed sideways it is much higher than E. submaculatum, 

 while its highest point is much nearer the apex. Whole surface 

 rugosely punctate and uneven. On each elytron two round 

 humps at base in line with humeral callus, another about half- 

 way near suture, more or less connected by a ridge with a cor- 

 responding rising on lateral flange. Apical declivity steeper 

 than in E. suhmaculatum. (Whether a lusiis naturce or other- 



