ART. 2. CHALCID-FLY GENUS CHRYSOPLATYCERUS TIMBERLAKE. 9 



0.217; length of scape, exclusive of the radicle joint: 0.485; width of 

 scape : 0.318 ; length of flagelliim : 0.535 ; total width of mesoscutum : 

 0.667 ; width of the disk of mesoscutum : 0.478 ; length of f orewing : 

 1.46; width of forewing: 0.57 mm. 



Male. — Structural characters agreeing with the generic description 

 above and only those distinguishing it from the male of splendens 

 need be mentioned here: Head slightly thicker fronto-occipitally, 

 the frontovertex a little wider than long, distinctly more rugose and 

 with more numerous and evident pin-punctures ; mesoscutum as finely 

 reticulate as in splendens., but slightly more roughly and with the fine 

 seriately arranged hairs more numerous; axillae more elevated and 

 slightly angulated at the middle with an obliquely declivious pos- 

 terior face ; scutellum more convex (being somewhat flattened on the 

 disk in splendens)^ a little more densely and roughly reticulate and 

 with the fine hairs much more numerous ; both mesoscutiun and scutel- 

 lum are much less smooth and shining on the sides. Antennae (fig. 

 2) essentially similar in the grosser characters, although the scape 

 is slightly longer than in splendens^ but under high magnification 

 the linear sensoria are found to be much more niunerous, there being 

 about four transverse rovrs 

 on each funicle joint and 

 only two or three partial 

 rows in splendens. Wings 

 (pi. 1, fig. 2) a little longer 

 and not so broad, especially 

 the hind pair, which arc 

 unusually short and wide 



in 5/>Ze716?e7lS/ the discal Cil- ^^^ 2.-Antenna of male cnuTsorLATVCEncs 



iation much finer, shorter, ferrisi timeeulake. 



and very hyaline in a large quadrate area just beneath the venation lie- 

 ginning at the distal border of the speculum as seen in slide mounts, 

 whereas in splendens the whole disk beyond the speculum is uni- 

 formly ciliated ; discal ciliation of the hind wings is extremely short 

 and hyaline and evident throughout in the case of splendens; mar- 

 ginal vein longer and slenderer, nearly three times as long as wide 

 (nearly as wide as long in splendens) , stigmal vein somewhat shorter, 

 the postmarginal considerably^ longer and more distinct being about 

 twice as long as the stigmal (only slightly longer than the stigmal in 

 splendens) . 



Coloration rather dull and very slightly bluish black, the meso- 

 pleura and abdomen much more shiny and bluish, the scrobes, de- 

 clivous part of the axillae and the metapleura with an evident metal- 

 lic greenish luster ; mouth parts largely yellowish, the antennae dull 



