746 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 



face is more or less wrinkled, the sides near the shoulders are 

 also wrinkled, some of the interstices have a few large punctures. 

 The clypeus seems to indicate that the specimens described are 

 females, but the clothing of the front tarsi can scarcely be other 

 than a masculine feature. 



Cryptodus ater, n.sp 



Black, highly polished; parts of antennae and of palpi ob- 

 scurely reddish. 



Head with crowded, reticulate punctures, becoming isolated, 

 but still dense, in middle of base; with a shallow median depres- 

 sion, on each side of which is a feeble elevation. Clypeus gently 

 rounded, outer margins upturned throughout, but less on sides 

 than in front. Mentum gently incurved at base; with dense, re- 

 ticulate punctures there, becoming smaller and sparser in front. 

 Antennae ten- jointed, first joint strongly and evenly dilated at 

 apex. Prothorax with sharply denned but not very large or 

 dense punctures, becoming smaller, crowded, and transverse on 

 frontal, and latero-frontal margins; median line lightly impress- 

 ed. Elytra with numerous series of elliptic punctures, each 

 separated from the adjacent surface by a fine ring, punctures on 

 the interspaces few and small. Pygidium with reticulate sculp- 

 ture; at apex with fairly dense but isolated punctures. Front 

 tibiae rather strongly tridentate. Length, 22-24 mm. 



Hab. — New South Wales: Jenolan (J. C. Wiburd), Sydney 

 (A. M. Lea). 



In general appearance close to C. tasmannianus f and with 

 similar reticulation of the pygidium, but the base of the mentum is 

 distinctly notched, although much less deeply than on most 

 species of the genus. From the description and figure of C. 

 politus it differs in being smaller, head with crowded punctures, 

 punctures of under surface not "tenuissime" and elytral costae 

 much less conspicuous (even less so than tasmannianus), the 

 shape, but not the punctures, of the mentum is much as that of 

 Westwood's figure (4 b) ; C. debilis is described as having the 

 base of the mentum truncate, the antennae nine- jointed and the 

 size much less. The elevations on the head are so feeble that 

 they could scarcely be regarded as tubercles. The punctures on 

 the under-surface vary considerably, in places being rather small 

 and isolated, elsewhere small and each in the centre of a circle, 

 these having a reticulate appearance, whilst elsewhere the circles 



