ART. 2. CHALCID-FLY GENUS CHKYSOPLATYCERUS TIMBERLAKE. 7 



comparatively narrow at base and widening perceptibly towards the 

 apex, while in splendens it is nearly of the same width throughout; 

 funicle joints all transverse, increasing in length and width distad, be- 

 ing much less cupped and narrowed ventral than in splendens; club 

 considerably longer than wide, more rounded and a little longer on the 

 ventral margin than on the dorsal, in length about equal to the last 

 four funicle joints combined and a little wider, while in splendens 

 the club equals the funicle in length and width. 



Mandibles small, slender, bidentate, the inner or dorsal tooth much 

 longer than the other one ; maxillary palpi four-jointed, the first two 

 joints short and about equal, the third still shorter, the fourth rather 

 long and slender or somewhat longer than the preceding joints com- 

 bined. 



Collar of pronotum short and arcuate; mesoscutum with a trans- 

 verse median part nearly twice wider than long, only slightly convex 

 and abruptly limited from the deeply furrowed sides of the scutum 

 by a sharp carina just even with the outer ends of the axillae; the 

 latter strongly elevated above the scutellum, carinated at the middle, 

 at which point they become abruptly declivous, the posterior surface 

 being perpendicular and meeting the dorsal surface in a right angle; 

 scutellum in the form of a short, bluntly rounded cone, being well 

 elevated and convex at the sides and apex, and convex on the disk 

 although becoming somewhat tectiform at the base, the apical fas- 

 cicle of hairs rather thicker and slightly shorter than in splendens; 

 propodeum large and inclined obliquely backward, moderately long 

 at the middle and about twice as long at the sides, a transverse, 

 broadly arcuate carina present anteriorly and just tangent to the 

 basal margin, a shorter curved carina present on each side running 

 from near the spiracle to the outer end of the transverse carina, the 

 spiracles rather large and almost round; legs and wings (pi. 1, fig. 1) 

 as in splendens except in minute details, of which the most important 

 seems to be the much smaller size of the enlarged and flattened hairs 

 guarding the proximal border of the speculum of the forewings. 



Abdomen small in dry material, shorter than the thorax by about 

 one-fourth, the dorsum more or less deeply concave, the ventral sur- 

 face compressed, the ovipositor enclosed and concealed by the ven- 

 trites; vibrissal plates situated on each side at or near the middle of 

 the length, the vibrissae reaching nearly to the apex. 



Sculpture.—Face, cheeks, and postorbital area of head smoothish 

 and very finely delicately reticulate, the scrobes of the face polished; 

 frontovertex finely malleate-reticulate and with numerous scattered 

 very shallow pin punctures, many of these being in a crowded row 

 at the inner orbits of the eyes; collar of pronotum and disk of 

 mesoscutum very minutely, densely, and roughly granular, the 

 scutum becoming smoother and minutely reticulate on the posterior 



