ASHMEAD : CLASSIFICATION OF THE CHALCin FLIES 431 



Spii.ochalcis peksimilis, sp. nov. 



Male. — r.ength G.5 mm. Black, coarsely punctate ; orliits, cheeks, pronotum, ex- 

 cept in front, spots on each side, the margins of the middle mesothoracic lobe, a line 

 on the outer margin of the lateral lobes, two large nearly confluent spots towards 

 apex of scutellum, metathorax, except at base above, tegular, a spot on mesopleura 

 at insertion of the hind wings, front and middle legs, except coxte, the petiole of ab- 

 domen and the basal half of the second abdominal segment, yellow. The hind legs 

 are broken off and cannot l)e described. Wings hyaline, with a fuscous spot or 

 cloud enclosing the apex of the stigmal vein ; veins dark brown. 



Brazil : Chapada. One specimen. 



Sl'ILOCH.\LCIS UNIMACULATA, Sp. IIOV. 



Female. — Length 4.5 mm. Black and yellow, punctate. Head yellow, the 

 occiput, a large spot on the forehead and the scrobes black ; thorax black, the pro- 

 notum above, the margins of the middle mesothoracic lobe, the outer margins of 

 the lateral lobes, the scutellum except a central black spot, the axillae except a spot 

 at base, the tegulte, a spot beneath, spots on pleura above, and a transverse spot on 

 each side of the metathorax nearly confluent, yellow ; legs yellow, the hind coxae 

 with a black spot at base beneath and a black or fuscous streak or spot above ; the 

 hind femora on outer face are mostly yellow but with a black spot above towards 

 apex, a black streak beneath and a black spot beyond it at apex ; the inner face is 

 mostly black with a large yellow spot towards apex. Wings hyaline, with a fuscous 

 spot at apex of the stigmal vein. 



Brazil : Chapada, in April. Two specimens. 



SriLOCHAI.flS PERPLEXA, sp. nov. 



Female. — Length 5 mm. Head yellow, the occiput, vertex and scrobes black; 

 thorax black marked with yellow, the pronotum yellow, the front face and a small 

 area on each side of dorsum black ; middle mesothoracic lobe mai-ginal with yellow, 

 the lateral lobes margined with yellow outwardly at base and along the inner margin 

 at base ; scutellum yellow, with a black central spot, the axilUe with a small black 

 spot at base ; pleura mostly 3'ellow with two black spots, the metathorax yellow 

 except a black spot at base ; legs yellow, the hind coxte with a black spot above 

 toward base, the femoral teeth small, black, the hind tibite with a black line beneath; 

 aljdomen conically pointed, a little longer than the head and thorax united, the 

 petiole yellow, a little more than thrice as long as thick, the body of abdomen red- 

 dish-yellow, the sheaths of the ovipositor black, the first segment with a yellowish 

 spot at each side near base, the second and following segments marketl with velUnv 



