235 



Head with dense, reticulate sculpture, becoming laminate 

 in front; with a scarcely traceable median depression. Clypeus 

 rather strongly elevated in front, less so on sides, the hind 

 suture marked by a finely-elevated line, but not traceable 

 across middle. Mentum with base deeply notched and 

 bidentate; densely reticulate, but the sculpture subobsolete 

 in front. Antennae ten-jointed, basal joint strongly dilated 

 and lop-sided in front, the following joint inserted slightly 

 nearer its base than apex. Prothorax with rather large and 

 dense ring punctures, each with a central pit ; median line 

 feebly defined or absent. Elytra with rather large, elliptic, 

 ring punctures, becoming smaller, denser, and rounder on 

 sides; costae well defined. Pygidium with numerous ring 

 punctures, each with a central pit, becoming crowded in 

 corners, and almost simple at apex. Front tibiae strongly 

 tridentate. Length, 16-21 mm. 



Hab. — New" South Wales: Mulwala, Coonabarabran 

 (Blackburn's collection from T. G. Sloane) ; Queensland: 

 Bowen (Aug. Simson's No. 4294). Type, I. 2266. 



The general sculpture is somewhat as in paradoxus, but 

 the surface is more polished, and the antennae are ten-jointed; 

 the basal joint is so wide, with its tip overhanging the base of 

 the club, that it is impossible to count the joints before 

 dissection. The head has two very feeble elevations, and these 

 are sometimes so ill-defined that they might fairly be regarded 

 as absent. The punctures on the front sides of the prothorax 

 are larger than elsewhere, and do not degenerate into 

 crowded scratches. There are seven specimens before me, all 

 with simple front claws. 



Cryptodus angustus, n. sp. 

 PL xxvii., fig. 87. 



Dark brown and shining. Upper-surface with sparse and 

 extremely short setae. 



Head with coarsely reticulate sculpture, becoming finer 

 in front ; with a shallow median depression, on each side of 

 which is a feeble elevation. Clypeus moderately elevated in 

 front, rather feebly on sides. Mentum with base deeply 

 notched and strongly bidentate ; with coarse reticulate sculp- 

 ture, becoming finer in front. Antennae ten-jointed, ba6al 

 joint strongly dilated to apex. Prothorax with fairly dense 

 shallow punctures, each with a central pit, becoming crowded 

 on the sides in front; median line feeble. Elytra with large, 

 shallow, elliptic, ring punctures, becoming smaller and rounder 

 towards sides, interstices with rather sparse and small but 

 sharply-defined punctures; costae rather feeble. Pygidium 



