300 MEMOIRS ON THE COLEOPTERA 



Body large, oblong-oval, with notably large head and relatively very 

 moderate eyes, the mandibles shorter, arcuate externally; pronotum 

 not completely or feebly margined at base and with very broadly 

 rounded basal angles; basal joints of the anterior tarsi obliquely and 

 inferiorly prolonged at their apical angles. Sonoran regions. 



Cratocara 



Body small and slender, parallel, the head large and with large and very 

 prominent eyes, the mandibles longer and straighter; pronotum 

 coarsely and very strongly beaded at base, the basal angles abruptly 

 prominent and sharply denned; tarsi shorter and much more slender, 

 the joints not modified at the angles. Neotropics from Panama to 

 Southern Texas Pogonodaptus 



In both of these genera the mentum is strongly dentate and the 







tarsi are sexually unmodified. 



Cratocara Lee. 



Polpochila Horn, Bates nee Sol.; Melanotus Dej. nee Esch. 



The body in this genus is of rather large size and robust outline, 

 with glabrous, shining and rather thin or only moderately thick 

 integuments. The head is notably large, the labrum sinuate 

 medially, the epistoma sinuato-truncate, the long seta at each side 

 at a considerable distance from the apex, and the eyes are moderate 

 in size and prominence. The frontal foveae are large and deep and 

 are isolated, not connected with the posterior portion of the im- 

 pression containing the supra-orbital seta and extending behind the 

 eyes. Antennae rather stout, moderately short and strongly com- 

 pressed. Just above the eyes there is a fine straight carina ex- 

 tending from the supra-antennal angle to the post-ocular im- 

 pression. Mentum large, with acute and prominent anterior 

 angles, the emargination relatively small and shallow, the tooth 

 large, sharply triangular, extending almost as far as the lobes; 

 behind the tooth there are two long setae and the support of the 

 mentum bears at each end two very long setse arranged trans- 

 versely. The ligula is long, gradually rather strongly dilated at 

 apex, with the usual two very long coarse setae, the paraglossae not 

 very broad with their outer angle slightly produced, acute and 

 curving inward. The labial palpi are long and slender, quite 

 different from anything known in the preceding tribe; the second 

 joint is very slender and elongated, bearing on the anterior edge, 

 beyond the middle, two long and very stiff setae, the terminal setae 



