IIYPOLABIPSIS. 231 



CArur breve, semper verticale aut penitus verticale, et antice obsolete 

 productum, granulatum aut punctatum. 



TnoRAX aut quadratus aut transversus. 



Elytra lata ; aliquando subglobosa, aliquando parallela ; pimctato- 

 striata, plerumque ante medium oblique depressa. 



Pedes robust i ; tibiis posticis inarmatis, simplicibus. 



Labrum subcircular, in some species medially sinuate. 



Maxillary palpi (Tab. IX. fig. 3 m) incrassated ; the first and 

 second joints more or less attenuated ; the third joint robust and 

 transverse, the breadth being considerably greater than the length ; 

 sometimes in form globular. 



Labial palpi (Tab. IX. fig. 3 n) elongate, cylindrical ; the apical 

 joint attenuate. 



Antenna? approximate, situated below (or parallel with the inner 

 margins of) the eyes ; in some species of the group (as in H. Lacor- 

 dairii) filiform and robust, in others (as in H, albo-guttata) sub- 

 dilated or distinctly incrassated. 



Eyes situated close to the base of the head, for the most part di- 

 stinctly globular; their form is circular, or (in some few species, 

 like H. elegantula and H. nana) with a distinct tendency to an oval 

 form. 



Head : at the base short and transverse ; in all the species of the 

 group vertical, the apex being for the most part more or less pro- 

 duced or subattenuate : in all the species there is, above the labrum, 

 a transverse triangidar plane ; this plane is occasionally bounded by 

 oblique carinations : the surface between the insertion of the antennae 

 and the base of the head is punctate, or more frequently granidated. 



Thorax always somewhat broader than the head, and distinctly 

 narrower than the elytra ; in form it is either subelongate (as in 

 H. elegantula), or in most species quadrate (as in H. Balii) ; it is 

 occasionally, however, distinctly though not broadly transverse (as 

 in H. albo-guttata) ; the form is always rectangular, the angles 

 being always distinct or subacute ; the sides are always marginate, 

 frequently subconstricted (in some species, as in H. elegantula, di- 

 stinctly constricted) at the base ; occasionally the margin is in out- 

 line slightly sinuate ; the surface is equate, generally flattened and 

 depressed, rarely elevated or gibbous ; at the base, for the most part, 

 transversely depressed ; more or less punctate, or granidated, and 

 subpubescent. 



Scutellum triangular, situated on (very rarely below) the plane of 

 the elytra. 



Elytra in all the species considerably broader than the thorax, 



