BY A. M. LEA. 



747 



are reduced to segments and isolated, but each with a small 

 puncture; on one specimen the punctures in the median line 

 of the pronotum are larger and more transverse than the ad- 

 jacent ones, but on the other specimen they are no different. 

 As the front tarsi are simple they are probably both females; 

 but this is not necessarily the case as the males of C. para- 

 doxus and of at least two other species, the sex of which I have 

 proved by dissection, have simple front tarsi. 



Cryptodtjs concentricus, n.sp. 



c? Black, highly polished, parts of antennae obscurely diluted 

 with red. 



Head with crowded, reticulate punctures ; a wide depression in 

 middle. Clypeus with margin strongly upturned in front, less 

 so on sides. Mentum with base deeply notched or bidentate, 

 with crowded reticulate punctures, becoming smaller and more 

 isolated in front. Antennae ten-jointed, first joint strongly 

 dilated at apex. Prothorax with sharply defined but rather 

 small and not very dense punctures, becoming crowded and trans- 

 verse on frontal and latero-frontal margins ; median line dis- 

 tinct, becoming rather deep and wide in front. Elytra with 

 series of fairly large, elliptic, or round, ringed punctures, the 

 interspaces with small and sparse punctures. Pygidium with 

 dense, concentric scratches, and numerous small punctures. 

 Intercoxal process of prosternum with a transverse carina, its 

 ends nodose. Front tibiae strongly tridentate; front claws un- 

 even. Length, 21-22 mm. 



Hab:— New South Wales: Albury (W. Dumbrell and A. M. 

 Lea). 



A highly polished species, but smaller and differing in many 

 <it her respects from the description of ('. politus; the conspicu- 

 ously foveate head, and concentric sculpture of the pygidium 

 (as on many Cetonides) readily distinguishes it from all other 

 species known to me. The excavation on the head occupies the 

 median third in width, and about three-fourths the length; on 

 each side of it there is an obtuse swelling that could hardly be 

 called a tubercle; the scratches on the pygidium are not parts 

 of a system of circles, each with a central pit (as on many 

 species of the genus) but are more or less concentric, wavy lines, 

 isolating numerous thin elevations, each of which on an average 

 lias from three to five punctures; on tlie under surface, especial- 



