738 NEW SPECIBS OP AUSTRALIAN COLEOPTERA, xiv., 



combined, slightly shorter than eleventh and slightly longer than 

 tenth. Prothorax with sides strongly rounded in front, and then 

 increasing in width to base, extreme base distinctly wider than 

 elytra, and about twice the width of apex, with a rather feeble 

 median line disappearing before apex; with very dense, and 

 moderately large, round punctures; with a small, round fovea on 

 each side, close to middle of base. Elytra parallel-sided to 

 beyond the middle, base densely granulate-punctate, elsewhere 

 with fairly dense but smaller and more sharply defined punctures; 

 striation w^ell-defined, first and second striae on each elytron 

 opening out into a short, deep, oblique sulcus close to apex. 

 Hind coxcfi with greatest length about equal to that of second 

 abdominal segment, oVjliquely decreasing to each side, which is 

 about one-third the greatest length. Length, 15 mm. 



/ya6.— N.S.W.: Mount Irvine (Dr. E. W. Ferguson); unique. 



The prothoracic punctures, although dense, are quite sharply- 

 defined on the disc; on the sides, they are more crowded and 

 irregular. From some directions, the basal fifth of the elytra 

 appears to be closely covered with fine, transverse corrugations. 

 The three, long, terminal joints of antennae are suggestive of (the 

 Australian species of) Dyscolocer^is, but the deep, lateral channels 

 of the prosternum at once exclude it from that genus. 



It is with some doubt that I refer this and the following species 

 to Dyst7'iy()7iislhis, with w^hich, however, they would certainly be 

 associated in Blackburn's Table; the antenme of the two species 

 dififer considerably from each other, and also from those of B. 

 paiadoxus, and, in other families of beetles, these differences 

 would almost certainly be regarded as of generic importance; 

 but as IJonvouloir, and other workers at the family, have allowed 

 ail even greater range of variation in the antennae, it does not 

 appear desirable to propose a new genus (or new genera) for 

 them at present. The lateral channel on each side of the pro- 

 sternum is deep and conspicuously closed posteriorly (and receives 

 the antenna throughout its length); on the basal third of the 

 inner side, it is distinctly carinated, but, from the basal third to 

 its front margin, the side is gently rounded, without the least 

 trace of a carina. Although Blackburn separated Dystriyoiiisthis 



