BRACHYGLUTINI 147 



Antennal segment VI elongate-cylindrical, three times as long as wide; 

 intermediate legs with the coxae and trochanters simple, not spinose 

 or acutely produced Female oberthiiri 



Antennal segment VI abnormal and V also abnormal ; either the coxae 

 or trochanters of the intermediate legs spined or acutely produced. . 2 

 2. Antennal segment V twice the size of the fourth segment, circular in 

 form, with the dorsal face slightly convex and the ventral face gib- 

 bous; VI large, oblong-ovate, with dorsal face convex and ventral 

 face depressed and granulated ; intermediate coxae with the internal 

 angle produced into a long, triangular, acute and posteriorly directed 

 process; 1.6 mm. long Male oberthiiri 



Antennal segment V oblong, the dorsal face reniform in outline, the 

 ventral face concave, and bearing a strong, acute, median ap- 

 pendage; VI with the dorsal face elongate-oval in outline, but the 

 ventral face very complex and abnormal ; biappendiculate, the first 

 appendage being near the base, elongate and slender, angulated at 

 its basal third so that its expanded apical end extends ventrally 

 beyond the second appendage ; second appendage arises in the basal 

 half of the ventral face as an acute tooth more or less covered by 

 the basal appendage; anterior half of the ventral face not appen- 

 diculate but quadrately produced, with the apical area narrowing 

 to form an angulated, subgeniculate articulation with the seventh 

 segment; VII and VIII with ventral faces narrowed and produced; 

 fifth and sixth segments articulated in an arc, to give the antennae 

 a distinctive appearance; intermediate trochanters armed at base 



with a small spine; 1.8 mm. long (PI. XVI, 10, 11) 



Male appendiculata (female not known) 



appendiculata Raffray. 1904. Mexico, (may be a variation of di- 



versula Raffray, vide infra) 

 oberthiiri Raffray. 1904. Colombia. 



Group LIII 



This fifty-third group contains but a single species: 



reichei (Schaufuss). 1872. Colombia. (Bryaxis). (reicheiana Schau- 

 fuss) Guatemala (cf. Sharp, 1887, p. 27) 



Group LIV 



I am insuflficiently acquainted with this group to attempt a key to the 

 species : 



bifoveata Fletcher. 1928. Mexico. 



binodula (Schaufuss). 1872. Colombia. (Bryaxis) 



celata (Sharp). 1887. Mexico, Guatemala, Nicaragua. (Bryaxis) 



immodica Raffray. 1904. Colombia. 



