574 



Read with a conpicuous depression in middle and non- 

 tuberculate; with dense but irregular semicircular punctures; 

 clypeus moderately elevated and truncated in front; mentum 

 large, gently depressed in middle, base obtusely notched for 

 reception of front process of presternum, with dense but 

 irregular semi-circular punctures, an oblique row of long 

 hairs on each side. Antennae ten-, club three-jointed, basal 

 joint about twice as long as its apical width, its extended apex 

 concealing some of the following joints. Prothora-x about 

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

 front angles produced, basal ones obtuse; with sharply denned 

 but not very large or dense punctures, but becoming crowded 

 in gutters; with a shallow and vaguely defined median line. 

 Elytra with somewhat irregular rows of rather large, horse- 

 shoe-shaped punctures, becoming crowded at apex, each 

 (excluding the suture and margin) with four shining elevated 

 lines, of which the outer one is rather feeble. Pygidium 

 strongly convex ; with crowded punctures except in middle. 

 Front tarsi with very unequal claws, the inner one thick, with 

 a large basal appendix, the outer one thin with an acute 

 appendix. Length, 27 mm. 



Hab. — New South Wales: Bellingen (W. du Boulay). 

 Type (unique), I. 7819. 



Considerably larger than any previously described species 

 except politus, from the description and figure of which it 

 differs in having the head depressed in middle and non- 

 tuberculate. The mentum is conspicuously notched, but much 

 less deeply than is usual in those having it notched. 



Cryptodus bilobus, n. sp. 

 Pi. xxxiv., fig. 41. 



Blackish-brown ; head and parts of legs black. Upper- 

 surface glabrous; under-surface sparsely and irregularly 

 clothed. 



Head with crowded and irregular punctures, a short 

 transverse strongly elevated ridge with geminate tubercles 

 between eyes; clypeus strongly bilobed owing to a deep apical 

 notch; mentum with numerous rather large punctures, 

 somewhat concave in front, obtusely notched at base, with a 

 semicircular marginal row of stiff bristles. Antennae nine-, 

 club three-jointed, apex of basal joint concealing some of 

 the following ones. Prothorax about once and one-fourth as 

 wide as long, widest at about apical third, then gently 

 incurved posteriorly, then slightly dilated with the basal 

 angles rounded off, front angles slightly produced, a slight 

 concavity in middle of apex, with middle of margin slightly 

 elevated (but not tuberculate) ; with numerous sharply-defined 



