BRACHYGLUTINI 155 



forward, one near each antennal base. Ventral face of the head with the usual 

 median, longitudinal carina. Antennae eleven-segmented, often irregular in 

 the male sex. Maxillary palpi four-segmented, first minute; second gradually, 

 strongly swollen apically; third transversely, often irregularly, triangular; 

 fourth irregularly ovoidal. Pronotum subcordiform, disc simple, three sub- 

 basal foveae. Elytra with each elytron with two or three (possibly four foveae 

 in valdiviensis?) basal foveae, dorsal stria present but shortened. Abdomen 

 normally margined, not abnormally formed. Middle coxae subcontiguous; 

 posterior coxae distant. Second tarsomere longer and thicker than the third, 

 and bearing beneath a brush of setae in the male anterior tarsus. 



The synonymy in many of the species is complicated. Being quite unfa- 

 miliar with the genus, I have used the group key of Raffray (1904) to partially 

 separate the many species: 



Antennae simple 2 



Antennae different in the two sexes 11 



2. Abdomen simple 3 



Abdomen with first tergite modified (rare in genus as noted previ- 

 ously), with a strong, acute tubercle, set in a depression on each 

 side of segment; head with a fine, transverse frontal sulcus, and 

 between the eyes a large depression Group X 



3. Head with no transverse frontal sulcus, but the head diversely sculp- 



tured 4 



Head with a transverse frontal sulcus 6 



4. Head with a large frontal fovea and also a short longitudinal short 



sulcus on each side Group IX 



Head with a depression anterior of the eyes 5 



5. Head with a strong, transverse depression anteriad of eyes; vertex 



more or less prominent and produced above the eyes. . . .Group VII 

 Head with a sinuate depression anteriad of the eyes, the front pro- 

 longed anteriorly and head distinctate punctate Group VIII 



6. Transverse frontal sulcus simple and deep 7 



Transverse frontal sulcus present, and in addition, a very deep, wide, 



transverse depression anterior of eyes Group VI 



7. Head much longer than wide, with a very large triangular anterior 



depression; last segment of antennae very large Group V 



Head either square, or simply attenuated anteriorly 8 



8. Head attenuated anteriorly and simple Group I 



Head square 9 



9. Club of antennae with eleventh segment conspicuously large 10 



Club of antennae with the tenth segment large and transverse, eleventh 



segment not wholly fonning the club Group II 



10. Eleventh antennal segment very large, club practically one-segmented 



Group III 



Eleventh antennal segment larger than normal but ovoidal . . Group IV 



