146 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



especially with beautiful purple shades; the sides and dorsum of propodeum 

 purple with bluish reflection; scutellum and postscutellum black; coxae 

 violet, trochanters dark suffused with yellow; femora and foretibiae yellow; 

 middle and posterior tibiae and all tarsi black; abdomen violet colored; 

 ratio of length of third and fourth antennal joints is 9:8; length 6.0 mm. 



Canal Zone 27. minusculus, new species 



The whole head black; the whole thorax green, with no purple iridescence, 

 abdomen black in certain light with brilhant blue reflection with a trace of 

 purple; clypeus and face with mostly blackish pubescence, scant; thorax 

 with considerable upright hair, especially on propodeum, and fairly well 

 covered all over with fine pubescence which only shows up in reflected light; 

 coxae blue, trochanters dark, all femora and foretibiae reddish; the mid- 

 tibiae strongly reddish beneath but dark dorsally, as are all the rest of 

 legs; the posterior tibiae with violaceous reflection in certain light; ratio 

 of lengths of third and fourth antennal joints is 13:10; length 8.6 mm. 

 Panama 29. callainus, new species 



38. Clypeus with a greenish cast, face, front and vertex, the latter two with 



vague purple reflection; the whole thorax, including scutellum, postscutellum 

 and propodeum, bright green (and blue) with strong purple reflection; 

 coxae black with green reflection, trochanters black; the femora all yellow 

 with basal third (forefemora) or basal fourth black; anterior tibiae yellow, 

 last two pairs and all tarsi black; abdomen black with blue reflection; 

 ratio of length of third and fourth antennal joints is 15: 13; length 9.0 mm. 



Panama 13. earinus, new species 



Middle of clypeus black, rest of head and thorax bright blue green, without 

 purple reflection; coxae blue green, trochanters black, yellowish beneath; 

 femora with first two pairs black at base last pair at base and apex; clypeus 

 apex of mandibles and mouth parts yellowish; ratio of lengths of third and 

 fourth antennal joints is 16: 13; length 6.6 mm. West Indies, 



30. buscki, new species 



39. Apical half of mandibles, and mouth parts bright yellow; antennae yellow 



underneath, brown dorsally; abdomen violet; thorax and head greenish 

 with bright violet and purplish reflection; middle and posterior tarsi and 

 posterior tibiae brownish; eyes sHghtly converging above, upper ocular 

 distance about 0.9 the lower; lateral ocelh only just slightly nearer each 

 other than to eyes; ratio of third and fourth antennal joints is as 14:10; 



length 8.0 mm. Nicaragua 21. blatteus, new species 



Apical half of mandibles and mouth parts blackish 40 



40. Thorax almost black, especially on dorsal surface (except a greenish streak 



between mesonotum and scutellum), where the middle on mesonotum has 

 a purplish streak in center (paratype without streak) ; sides of thorax have 

 some bright green in thoracic pleural sutures (paratype without the green), 

 but plates of thorax dull purplish colored; the whole thorax rather dull, 

 opaque, and with a hairy appearance; wings with greenish reflections; wings 

 hyaline, veins brown; abdomen violaceous, shining, pruinose; foretarsi 

 yellow except three apical joints; posterior tibiae a deep reddish brown; 

 antennae yellow beneath, brown above; length 8.0 mm. Cuba, Nicara- 

 gua 16. aquilus, new species 



Thorax not black, with very noticeable green or bluish color 41 



41. Basal tarsal joint of foretarsi black; first two pairs tibiae and all femora 



reddish; posterior tibiae and all tarsi black, middle tibiae blackish on dorsal 

 surface; head and thorax obscurely green with rather coarse, prostrate, 

 pubescence; coxae and trochanters black with greenish tint; antennae 



