258 







anterior angles produced, rounded and dentiform ; eight large, 

 contiguous, setiferous punctures on the upper sub-margin. 



Lower Up (ligula Latr.) concealed by the mentum. 



Mandibles arcuated, ending in an elongated, acute point, and 

 with three stout teeth on the inside ; the largest tooth, which is 

 nearest to the base of the ri^ht mandible, emarginated at the 



o ' o 



tip ; the corresponding tooth of the left mandible broader, 

 stouter and bifid. 



MaxilloB fringed with stiff, rufous hairs within, edentate, but 

 surmounted with an elongated, slender, articulated hook. 



External maxillary palpi four-jointed ; first joint shortest, 

 obconical ; second as long as the third and fourth together, ob- 

 conico-cylindrical, and with a few stout hairs on the inside ; 

 third joint rather shorter than the fourth, obconical ; fourth 

 joint elongated, subsecuriform. 



Internal maxillary palpi two-jointed ; first joint obconico- 

 cylindrical ; second cylindrical, slightly curved, obtuse at tip. 



Labial palpi a very little longer than the external maxilla- 

 ries, four-jointed ; first joint nearly concealed by the mentum, 

 thickest, obconical ; second joint shorter and smaller than the 

 first, obconical ; third joint longest, nearly cylindrical, enlarged 

 a little at the apex, with a few hairs on the inside ; fourth joint 

 shorter than the third, subsecuriform, rather longer and wider 

 than the fourth joint of the external maxillary palpi. 



Mentum transverse, rather wide, somewhat concave, deeply 

 emarginated, with the lateral lobes rounded, and with a stout 

 tooth in the middle of the emargination. This tooth is simple 

 at the point, but is grooved on the lower side from the base to 

 the tip. 



Thorax more or less cordiform, truncated at base, and tip. 



Scutellum short, wide, triangular, entirely concealed beneath 

 the hind margin of the thorax. 



Elytra united at the suture, together ovate, or oblong-ovate, 

 subacuminate, very obtusely carinated above the lateral margin, 

 inflexed and embracing the sides of the abdomen. 

 Wings wanting. 



