192 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



mere rather slender for the genus, with long hairs on inside, subgenital 

 plate rather long, ventral ridge not extending to apex. Brazil. Figs. 62, 63. 



69. brasiliensis, new species 

 Forecoxae entirely rufous; clypeus with much more white color about 0.6 of 

 width and apical edge with a white stripe about 0.25 of length, a slight 

 translucent rim; face broadly white the color reaching the antennae, the 

 surface just below antennae black to the preapical white rim of clypeus; 

 parameres very broad and short without hairs; subgenital plate short, the 

 central ridge extending to apex. Brazil. Figs. 72, 73. 



77. ater, new species 



10. At least one half or more of abdomen testaceous-yellow or rufous ... 11 

 No part of abdomen testaceous-yellow, or rufous; basal segment of abdomen 



may be slightly yellowish in part or basal segment may be ringed with 

 white 13 



11. Abdomen, pronotum except central spot above, tegula, ventral surface of 



thorax, first three antennal joints (rest missing), and legs entirely, testa- 

 taceous-yellow; face, clypeus, mandibles, and palpi joale yellow; pubescence 

 of body golden and sparse; pronotum angulate behind. Brazil. 



testaceous (Fox) 



Abdomen may be half rufous, but pronotum on both dorsal and ventral 



surface is not yellow or rufous 12 



12. Basal three segments of abdomen completely rufous; legs completely rufous 



from coxae on, except apical four tarsal joints are darker; all clypeus, 

 face, and anterior orbits to above antennae, yellow, the yellow extending 

 to antennae; all the thorax with beautiful purplish, violaceous colors; 

 antennae dark yellow. Argentina. Figs. 50, 51. 



74. cordobensis, new species 

 Only the basal abdominal segment more or less yellowish, the second also 

 with a yellowish tinge; all legs completely yellow except last tarsal joints; 

 clypeus yellowish on extreme sides, the middle mostly dull rufous and 

 black; face with yellowish sides reaching about half way to antennae and 

 the yellow not extending above antennae; face in center brownish; anten- 

 nae yellow on basal joint below, rest brownish black; thorax a beautiful 

 bright green, with purple iridescence. British Guiana. Figs. 64, 65. 



75. flavicrus, new species 



13. Basal abdominal segment ringed with white; pronotum subangulate behind; 



head, thorax, and coxae metallic green; clypeus except medially, mandi- 

 bles, palpi, forecoxae beneath, calcaria, and last tergite whitish; all the 

 femora and anterior tibiae and tarsi yellowish. Brazil. Figs. 58, 59. 



basalis (Fox) 



Basal abdominal segment not ringed with white; pronotum transverse 



behind 14 



14. All femora but only the front tibiae rufous, or only first two pairs of femora 



rufous and first two pairs tibiae rufous; body blue or green; antennae 



yellow beneath 15 



All femora and at least first two pairs tibiae yellow; the yellow stripe on 

 anterior orbits extending at least to antennae 16 



15. All femora but only the first tibiae rufous; body blue, clypeus broadly yellow 



each side, the yellow extending on each anterior orbit to middle of face. 

 British Guiana, Brazil, Trinidad. Figs. 42, 43 . . femoratus (Fabricius) 

 Only first pair of femora rufous, the last pair dark with violaceous color, in 

 reflected light; first two pairs tibiae rufous, the last pair dark reddish; 

 foretarsi yellowish, last two pairs dark. Brazil. Fig. 74. 



81. viridulus, new species 



