BRACHYGLUTINI 139 



Anterior median fovea wholly absent, the head, therefore, having only- 

 two foveae on the dorsal surface 18 



17. Antennal segments V and VI very large and more or less abnormal 



beneath Group LII. 



Antennae with segments VI to X inclusive abnormal. . . .Group LIII. 



18. Antennal segment V abnormal, being very long, often armed or other- 



wise unusual; VI normal Group LV (in part) . 



Antennal segments V and VI abnormal ; epistome may or may not be 

 prominently produced into a median, dorsal spine. . . .Group LVI. 



Group VI 



Only a single neotropical species belongs to this group, the other represen- 

 tatives being Asiatic. This neotropical species is unique in having very long 

 basal discal carinae on the first tergite, these being subparallel, separated by 

 one- third of segmental width, and two-thirds the segmental length, extending 

 to apical third of the first tergite. Described on a male specimen ; the trochanters 

 of the middle legs are armed with a sharp spine at middle of posterior margin. 

 Length 1.8 mm. 



limpida Fletcher. 1928. Peru. 



Group IX 



Antennal segment V distinctly longer than the fourth or sixth seg- 

 ments boliviensis 



(2.0 mm. ; known only from female) 



Antennal segment V not so formed 2 



2. Antennae relatively shorter and thicker; 1.8 mm.; known only from 



the female grouvellei 



Antennae relatively longer and more slender; known only from the 

 female pubescens 



boliviensis Raffray. Bolivia. 1904 

 grouvellei Raffray, Mexico. 1904 

 pubescens Schaufuss. Mexico. 1879 



Group X 



Antennal segment IX subquadrate — obconical, only slightly larger 

 than eighth segment; segment X similar to the ninth segment in 

 form and somewhat larger; 2.15 mm. long aubeana 



Antennal segment IX trapezoidal, slightly transverse, slightly larger 

 than eighth segment; segment X very much larger than ninth seg- 

 ment, truncate — obconical; 1.9 ram. long gounellei 



aubeana (Raffray). 1890. Venezuela. {Bryaxis) 

 gounellei Raffray. 1909. Brazil. 



