TWO GENERA OF CHALCID-FLIES — GAHAN 353 



Male. — Length 1.9 mm. Dull black ; scape and moutli parts testa- 

 ceous; pedicel and flagellum brownish black; legs brownish black, the 

 apices of tibiae very narrowly and basal three joints of middle and 

 hind tarsi pale yellowish; propodeum with metallic greenish reflec- 

 tions; wings hyaline; abdomen more or less brownish black. Pubes- 

 cence pale, shorter and less conspicuous than in female. 



Head strongly transverse, broadly concave behind, the angle formed 

 by vertex and occiput slightly rounded; lateral ocellus nearly or quite 

 twice its own diameter in front of occipital margin and about its own 

 diameter from eye margin; ocellar triangle strongly obtuse; anterior 

 margin of frons slightly angulated but not forming a sharp carina 

 from antennal fossa to lower margin of eye; malar space ec^ual to 

 more than half the vertical length of eye; eye pubescent; antennal 

 scape obviously somewhat swollen, thickest beyond the middle; pedicel 

 about twice as long as thick; ring joint broader than long; first funic- 

 ular segment a little shorter than pedicel, seventh about as broad as 

 long; club apparently solid, obliquely truncate, not thicker than last 

 funicular segment, and nearly equal in length to three preceding seg- 

 ments. Entire head densely sculptured and with short pubescence. 

 Mesoscutum convex, densely punctate, dull, clothed with short pubes- 

 cence; parapsidal grooves barely indicated; scutellum convex, sculp- 

 tured like mesoscutum; axillae with same sculpture as mesoscutum; 

 propodeum practically smooth, without definite folds or carinae, bare 

 except at lateral margins; spiracles round and rather large. Anterior 

 fennir rather broad, tibia slightly thickened; middle tibial spur mod- 

 erately stout and about two-thirds as long as basitarsus; posterior 

 femur compressed and about three times as long as broad, evenly ellip- 

 tical in outline; posterior tibia also compressed but only about half 

 as broad as femur. Forewing with marginal vein about one and one- 

 half times as long ^is stigmal vein and usually somewhat shorter than 

 postmarginal vein. Abdomen about as long as thorax but narrower, 

 rather weakly reticulately sculptured. 



Type localliy. — Pedro iMiguel, Canal Zone, Panama. 



Type.—V. S. N. M. No. 56651. 



Remarks. — Described from 30 females (1 holotype) and 14 males 

 (1 allotype) reared from egg masses of an unidentified spider collected 

 by H. Dietz and sent in for identification by James Zetek. 



8. ARACHNOPHAGA SCUTATA, new species 



Similar to opaca in sculpture but easily distinguished from that 

 species by color as well as by other characters. Resembling ferni- 

 ginea in color but differing markedly in sculpture. 



Female. — ^Length 3 mm. General color testaceous; mesoscutum 

 brownish and abdomen mostly dark brown; propodeum shining; scape 



