BY THE EEV. E. L. KING, B.A. 77 



The eyes are protected by being sunk in a deep groove formed by 

 prominent ridges on the sides of the head. Behind the mentum 

 is an oblong plate, the posterior portion of which is quite free, 

 the end emargiuate. I have called it in the above description 

 the ^uhmentum. 



The nearest approach to it which I have met with is in 

 Newman's genus Derataphrus (or Sigerpes of Germar.) I have 

 not however seen Newman's description which has been founded 

 on four New Holland species, (The Entomologist p. 403.) In 

 Hihetes the submentum is placed longitudinally, not as in Dera- 

 taphrus transversely. In the latter genus also the antennae are 

 11 -jointed — the mandibles are very robust — the thorax much 

 elongated, the body subcylindrical and the tarsi tetramerous — 

 all points of contrast with our present species. There can how- 

 ever be little doubt that the two genera are very closely allied ; 

 and that notwithstanding its pentamerous chai-acter our genus 

 must — for the present — take its place among the Golydiens of La 

 Cordaire, and come next to Derataphr^is among the sub-tribe 

 Bothridericles. 



Sp. 1. H. costatus. 



Castaneus punctatus ; thorace 5-costato ; elytro 3-eostato, 



Long. I poll. 



Liverpool, in ant's nests. 

 The whole surface is covered with deep and wide punctures. 

 The head is flat ; the two ridges forming the groove in which the 

 eye is placed meet in front of that organ, the under ridge being 

 serrated. The thorax is slightly convex, marked by 5 prominent 

 longitudinal costee, and has the sides rounded and serrated. 

 Each elytron has three longitudinal costa3. The scutellum is large 

 and punctured. The submentum extends from the mentum to the 

 eyes. It is nearly twice as long as broad, deeply punctate. The 

 first segment of the abdomen is wider than the rest, and 

 separates, by a triangular plate, the coxae of the posterior legs. 

 The femurs of all the legs are very wide — nearly as broad as 

 long. The tibi^ of the male are produced into a sharp point 

 beyond the insertion of the tarsi ; in the female the termination 

 of the tibiiB is obtuse. 



