517 



Head rather strongly convex and densely granulate- 

 punctate between eyes; clypeus deeply notched in front, each 

 side strongly but somewhat obtusely tridentate. Prothorax 

 rather strongly and evenly convex, sides moderately rounded 

 and very obtusely serrated, each side of base widely excised, 

 the hind angles rather obtuse; with crowded but (for the 

 genus) small and shallow punctures. Elytra with close-set 

 rows of very shallow punctures. Pygidium densely granulate- 

 punctate. Front tibiae strongly tridentate, third tooth 

 somewhat nearer base than apex ; basal joint of hind tibiae 

 almost as long as second and third combined ; claws each with 

 a basal quill. Length, 7J-8 mm. 



Hah. — Northern Territory: Melville Island (W. D. 

 Dodd). Type, I. 4813. 



In Blackburn's table would be associated with eniar- 

 ginatuSj from which it differs in its much smaller size and 

 very different clypeus ; it has the general appearance as of 

 fissiceps on a very small scale. The rows of punctures on the 

 elytra are very close together, and are scarcely geminate in 

 arrangement ; each puncture is like a small elliptic ring 

 (rather than a small pit) the central part of which is on a 

 level with the rest of the elytra ; the setae are rather more 

 numerous than usual, but on the elytra they are confined to 

 regular series. The mentum is almost semicircular in outline, 

 and gently depressed in the middle. 



Maechidius lateripennis, n. sp. 

 PI. xxxvii., fig. 94. 



Dull reddish-castaneous ; antennae paler. With thin, 

 short, depressed, pale setae. 



Head rather strongly convex, and densely granulate- 

 punctate between eyes, and on a feeble median elevation at 

 base of clypeus; clypeus deeply notched in front, each side 

 with three prominent processes, of which the first is rather 

 acute, the second somewhat obtuse, and the third still more 

 obtuse. Prothorax moderately convex, sides moderately 

 rounded and obtusely serrated, base widely and rather 

 shallowly excised on each side, hind angles subobtuse, a 

 shallow but distinct transverse depression on each side of 

 middle; with fairly large and dense punctures, towards sides 

 becoming crowded and granulate. Elytra with close-set, 

 subgeminate rows of shallow punctures. Front tibiae strongly 

 tridentate, the third tooth distinctly nearer base than apex; 

 claws each with a basal quill. Length, 6-7| mm. 



Hab. — Northern Territory: Darwin (N. Davies). Type, 

 I. 4812. 



