BRACHYGLUTINI 125 



Epistomal region remarkably dilated into a transverse plate 

 which extends apically beneath the antennae as far as the 

 second antennal segment, and laterally is almost as wide as 

 the head including the prominent eyes; known only from 

 Brazil NODULINA 



17 (13). Disc of prontiim either with a strong, median, longitudinal 



carina, or the disc is medianly, longitudinally gibbous 



.' BUNODERUS 



Disc of pronotum with a very large and deep excavation which 

 is trilobed, the large median lobe lies on the center of the disc 

 and is confluent with a smaller oblique lobe on each apico- 

 lateral angle of the disc, each of these oblique lobes being 

 more or less bilobed in themselves, giving a complex discal 

 picture ; this discal depression is in addition to the very large, 

 deep lateral fovea each side of pronotum in the anterior half, 

 and a small, circular subbasal fovea at middle; known only 

 from Panama PANABACHIA, new genus 



18 (12). Middle coxae distant as previously described 19 



Middle coxae subcontiguous as previously described 23 



19 (18). Each elytron with either basal foveae, or with fine points re- 



placing foveae 20 



Elytra with no basal foveae, or replacing points of any kind; no 

 pronotal foveae, neither lateral nor median, but with the pro- 

 notal base wrinkled at margin PSELAPTUS 



20 (19). Pronotum with no distinct foveae, neither lateral foveae nor a 



median basal fovea; base of each elytron with four minute 



points replacing the basal foveae SCALENARTHRUS 



Pronotum with foveae, either two laterals and a median, or two 

 minute laterals and no median, or no laterals and a median 

 present 21 



21 (20). Pronotum with a lateral fovea on each side and a median sub- 



basal fovea present; base of each elytron with either two or 



or four foveae XYBARIS 



Pronotum with either the median fovea present and the lateral 

 foveae absent, or the median fovea absent and the lateral 

 foveae present 22 



22 (21). Base of each elytron with four foveae; pronotum with the 



median fovea present, and the lateral foveae absent ; pronotal 



base transversely impressed MITONA 



Base of each elytron with two foveae; pronotum with the 

 median fovea absent, and a minute lateral fovea present on 

 each side CRYPTORHINULA 



23 (18). Pronotum with three subbasal foveae present, consisting of a 



lateral fovea on each side and a median fovea, these foveae 

 distinct 24 



