498 MEMOIRS OF THE CARNEGIE MUSEUM 



legs, except the coxse, honey yellow, the flagellurn strongly clavate, pale brown, the 

 joints after the second wider than long, the last funicle joint being more than three 

 times as wide as long. The metathorax is almost smooth with a delicate median 

 carina which is forked on the produced neck ; no transverse fold on the metano- 

 tum. Wings h3^aline, the veins yellowish. Abdomen ovate, not longer than the 

 thorax, subcompressed beneath towards apex. 



Male. — Length 2.5 mm. Agrees with female in color but"' easily recognized by 

 the antennse, the flagellum being long, filiform, the joints of the funicle being 

 briefly pedicellate, with moderately long hairs. 



Brazil : Corumba, in May ; Santarem. One male and three female specimens. 



Metopon magniclavatum, sp. nov. 



Female. — Length 3 mm. Bronzed black, with a purplish tinge, the head and 

 thorax closely punctate, the abdomen conically pointed, longer than the head and 

 thorax united, seneous black ; the scape, pedicel and legs, except coxse, honey yel- 

 low, the flagellum black, the club greatly enlarged and as long as the pedicel and 

 funicle joints united. 



Brazil : Santarem. One specimen. 



Quite different from all other species known by the greatly enlarged antennal, 

 club and by the conically produced abdomen. 



ACANTHOMETOPON Ashmead, gen. nov. 



Allied to Metopon Walker, but easily separated by the spined scutellum and by 

 the flagellum having only two ring-joints. 



ACANTHOMETOPON CLAVICORNE, sp. nov. 



(Plate XXXVIII., Fig. 3.) 



Female. — -Length 3.8 mm. Bronzed green, closely punctate, the first six joints 

 of the antennae and the legs honey yellow, the rest of the antennas black or brown- 

 black. Abdomen compressed, the ventral valve prominent ; above it has a brassy 

 tinge, beneath towards apex and the ventral valve yellow. 



Brazil : Corumba, in May. One specimen. 



Tribe III. Eutelini. 



Genus PLAYTERMA Walker. 

 Playteema nephele Walker. 



Platyterma nephele Walker, Ann, & Mag. Nat. Hist., XL, 1843, p. 186, cT. 

 Chile : Coquimbo. 



