HYrANTHERTJS. 97 



(Tab. IV. fig. 1 d) are short and broad, the basal joint being broadly 

 ovate ; the second of the same form as the basal joint, but more 

 minute ; the third broader than the first, broadly ovate, not bi- 

 lobed ; these three basal joints are densely margined with thick rigid 

 pubescence ; from the centre of the third proceeds the base of the 

 terminal joint, which is attenuated and gradually incrassated, ter- 

 minated by the apical claw, the two members of which are simple, 

 and unarmed at their inner margin by any basal tooth. The posterior 

 femora are very robust, and incrassated, slightly attenuated towards 

 the apex, broadly truncate. The tibia (Tab. IV. fig. Ig) is short 

 and robust, abruptly bent at the immediate base, and, when viewed 

 from behind, longitudinally flattened ; this flat longitudinal surface is 

 on either side marginate ; the marginations are produced immediately 

 above the insertion of the tarsus into an obtuse spur, and continued 

 to the extreme apex, where they terminate in two robust claws ; the 

 insertion of the tarsus is at some little distance from the apex, and 

 the socket which contains it is armed with minute teeth, like the 

 teeth of a comb. The tibiae (Tab. IV. fig. Ih) are short and attenuate, 

 the first and second joints being ovate, and the third broadly sub- 

 circular ; the fourth is elongate, subincurved, and produced above 

 into a broad globular inflation, which completely conceals from above 

 the apical claw. This claw is bifid and, like the anterior claw, simple. 

 The general appearance of the insects composing this genus will 

 (without reference to structural details) at once separate them from 

 others. They are more robust, more cylindrical, and less depressed 

 than in Physimerus ; the thorax is narrower and more rectangular 

 than in Phylacticus, which at first sight it closely resembles ; and 

 from Thrasygceus the genus is at once separated by its much smaller 

 size, as well as by its more contracted thorax. 



1. Hypantherus concolor. (Tab. IV. fig. 1.) 



H. oblongus, latus, sat robustus, fiavo-pubescens, rufo-ferrugineus ; 

 capite brevi, super antennarum basin T foveolato, punctato, ad 

 medium rufo-fusco suffuso ; thorace transverso, rectangulari, ad 

 basin transverse depresso, punctato ; elytris latis, robustis, ad 

 medium oblique depressis, punctato-striatis ; antennis brevibus, 

 incrassatis, rufo-tesiaceis, art. 6-8 nigris ; pedibus robustis, sub- 

 pubescentibus, rufo-ferrugineis. 



Long. corp. 2-| lin., lat. 1\ lin. 



Oblong, broad, tolerably robust, flavo -pubescent, rufo-ferrugineous. 

 Head short, transverse, slightly produced ; between the mouth and 

 the base of the antennae is a transverse subtriangular depression ; 

 immediately above the insertion of the antennas is an obsolete longi- 



