368 PROCEEDIN^GS OF THE NATIONAL iMUSEUM vol. 8S 



Abdomen barely twice as long as head and thorax; spiracles of 

 first segment at apical two-fifths; second tergite much shorter than 

 first and barelj^ as long as third. 



Reddish brown ; orbits and vertex whitish ; face medially brighter 

 than general body color and clypeus and mandibles ferruginous ; an- 

 tennae ferruginous, scape and pedicel darker; scutellum and thoracic 

 sutures paler than general color; wings hyaline, veins blackish, 

 stigma ferruginous, paler toward apex, tegulae and radices stramine- 

 ous; legs concolorous with body, the trochanters, tibiae, and tarsi 

 more ferruginous. 



Male. — Essentially like female. 



Ty]}e locality. — Bermuda. 



Jv^e.— U.S.N.M. No. 53497. 



One fem.ale and four males received from Fred M. Schott. Two 

 of the males are a little larger and slightly lighter in color. 



Genus IDECHTHIS Foerster 



IDECHTHIS PERUVIANA, new species 



Very similar to the cosmopolitan /. canescens (Gravenhorst), from 

 which it differs principally in the somewhat stouter antennae with 

 the subapical joints shorter than thick and not at all moniliform, 

 the finer and denser punctation of meoscutum, and the black second 

 tergite with apical angles triangularly ferruginous. 



Female. — Length 7 mm., antennae 4 mm., ovipositor sheath 2 mm. 



Head opaque, with dense, glittering, silvery pubescence on face, 

 clypeus, sides of frons, temples, and cheeks; temples convexly reced- 

 ing, seen from above half as long as short diameter of eye ; diameter 

 of an ocellus distinctly longer than ocellocular line and about two- 

 thirds as long as postocellar line; eyes shallowy concave opposite 

 antennae; face very sightly narrower than shortest width of 

 frons; antenna SS-jointed, fiagellum of uniform thickness, basal joint 

 hardly four times as long as thick, subapical joints slightly thicker 

 than long, not at all moniliform. 



Thorax with vestiture like that of head, opaque ; pronotum finely 

 punctate, the scrobe shining and transversely striate; mesoscutum 

 very finely, coniOiuently punctate ; scutellum more sparsely and finely- 

 punctate ; mesopleuron and metapleuron very finely shagreened, with 

 minute sparse punctures, speculum polished, scrobe transversely 

 striate; propodeum overlapping basal half of hind coxae, basaily 

 shagTeened and punctate, apicall}^ transversely rugulose. areola 

 elongate, parallel-sided behind costulae, conjfluent with petiolar area. 



Legs: Hind femur and tibia rather stout, tarsus little longer than 

 tibia, longer calcarium not quite reaching middle of basitarsus. 



