BY THE REV. T. BLACKBURN. 725 



is slightly longer than the 3rd of the maxillary and is slightly 

 dilated from the base outwards, while the third joint is scarcely 

 shorter than the 2nd and is slightly thickened for a little distance 

 from the base and then attenuated towards the apex, the labial 

 palpi thus scarcely differing from those of Simodontus, The 

 prosternum has a wide shallow sulcus down the middle from a 

 little behind the front nearly to the apex ; it protrudes a little 

 behind the front coxse, the protruding part being carinate round 

 its free margin and bearing two strong fovese on its surface. The 

 intermediate ventral segments bear a large setigerous puncture on 

 either side of the middle line, and are not furrowed transversely. 

 The apical ventral segment in the female bearR 4 setigerous punc- 

 tures along the hind margin, — in the male only 2 punctures which 

 however are very large ones. In the male the anterior tarsi are 

 but little dilated and the basal ventral segment is concave down 

 the front part of the middle line. [It must be remembered that 

 the male and female appertain to very widely distinct species]. 

 The very much lower plane of the mentum as compared with that 

 of the submentum as well as the shape of the former in front, 

 separate these two species widely from all the small Australian 

 Feronides known to me. The episterna of the metathorax carry 

 a well defined sulcus immediately within their margin all round 

 so that their edge appears finely ribbed. I cannot discover any 

 suture separating off from the episternum an apical piece (the 

 epimeron) ; at the apical end of the episternum, however, the 

 marginal sulcus is much further within the border than else- 

 where, and I take the portion beyond it to be the epimeron. 

 The episternum (including this piece) is not much less than 

 twice as long as its width in front which slightly exceeds 

 the width of the widest part of the elytral epipleurse. The 

 mandibles are nearly straight to near the apex where they are 

 incurved and sharply pointed. The labrum is transverse, trun- 

 cate in front. The head bears a strong transverse sulcus a little 

 behind the labrum ; the two ends of the sulcus turn at an angle 

 and run backward on the head, diverging in a curve to the eye ', a 

 large deep impression on either side is bounded externally by these 



