BY THE REV. T. BLACKBURN. 731 



episterna (including the apical piece divided off by a fine suture) 

 considerably longer than its front margin is wide, the front margin 

 being considerably wider than the elytral epipleurse, and no fur- 

 row running within the lateral margin ; intermediate ventral 

 segments transversely sulcate as in Simodontus, each ventral 

 segment bearing two conspicuous setigerous punctures placed one 

 on either side of (and near to) the middle, the apical segment of 

 the female with an additional setigerous puncture on either side 

 near the margin, prosternum produced widely and strongly 

 behind the front coxse, the free outline of the produced part 

 edged with a carina, the tarsi externally sulcate, the anterior 

 tarsi with the basal 3 joints in the male strongly dilated and 

 furnished beneath each with two rows (meeting at the base and 

 strongly diverging forward to enclose the base of the rows 

 belonging to the next joint) of very conspicuous white scale- 

 like papillae, mentum with a wide strongly declivous median 

 tooth, the front of which is arcuately concave in the middle and 

 prominent at the ends. 



I am unable to find any structural characters to distinguish 

 this genus from Simodontus except the strong declivity of the 

 median tooth of the mentum and the strongly sulcate tarsi. The 

 vestiture of the anterior tarsi in the male does not seem to differ 

 noticeably. 



LOXANDRUS. 



I doubt whether the Australian species attributed to this genus 

 are really congeneric with the American species for which the 

 name was established, as the mouth organs do not appear to me 

 to tally satisfactorily with the description, but as I have not a 

 type of any of the American species for comparison I shall not 

 venture to propose a new name. I have before me examples 

 from various parts of S. Australia, and some from the Northern 

 Territory, which do not seem to be specifically different inter se, 

 although they vary somewhat in size (long. 3|-4 J lines), and in some 

 the elytral interstices appear slightly more convex than in others. 

 I should say that Poecilus iridescens, Cast., is most probably this 



