ORTALIDJE — OCELOMETOPIA. 189 



1. < . biniac lllata n. sp. % .— (Tab. IX, f. 27.) Rufa, abdomine 

 chalybeo vel violaceo, pedibus flavis ; tibiis tamen tarsorumque apice 

 fusois ; alae hyalinae, nigro-biinaculatae. 



Ferruginous-reddisb, the abdomen steel-blue or violet; feet yellow; tibiae 

 and tip of the tarsi brown ; wings hyaline with two black spots. Long. 

 corp. 0.22—0.26; long. al. 0.21—0.22. 



Head and thorax ferruginous-red, rather shining; only the 

 hind coxa? sometimes pitch-brown. Front of very moderate 

 breadth; narrower anteriorly, somewhat excavated; the bristles 

 on the vertex, the very much advanced lateral bristles and the 

 two bristles near the ocelli black and rather strong. The ocelli 

 are placed close to each other on a flattened elevation, almost in 

 the middle of the front; the frontal lunule is rather isolated from 

 the face, in consequence of the very approximate position of the 

 antennae. The third antenna! joint is sometimes more brownish- 

 red towards the tip ; arista with a short pubescence. The short 

 hairs on the thoracic dorsum are whitish, and hence easily per- 

 ceptible; the ordinary bristles are black or brown, sometimes 

 only brownish; a blackish line in the middle is only occasionally 

 perceptible. Scutellum convex, with four brownish or brown 

 bristles. Abdomen metallic steel-blue, shining, with more or less 

 extensive and vivid violet reflections ; sometimes ferruginous- 

 brownish at the extreme basis; its almost whitish pubescence 

 appears much darker, when looked at against the light. Femora 

 yellowish, usually brownish at the tip; the foremost ones strong, 

 with a few weak and small spines on the under side, near the tip 

 only; the four posterior femora much longer, also strong, with 

 spines on the under side. Tibiae brown. Tarsi of a dirty-yellowish 

 brown from about the tip of the second joint. Wings pure hya- 

 line, with a rather sparse and coarse microscopic pubescence and 

 with black veins; the black stigma is confluent with a mode- 

 rately large, sharply limited spot, reaching as far as the third 

 longitudinal vein; a larger, almost triangular black spot occu- 

 pies the apex of the wing; it begins before the second longitu- 

 dinal vein and ends midway between the third and fourth veins ; 

 moreover, in the environs of the humeral crossvein, there is a 

 grayish-black spot, which is easily overlooked. The third longi- 

 tudinal vein is very straight; the small crossvein lies in the 

 middle of the comparatively short discal cell. The anterior basal 

 cell is somewhat expanded at the expense of the discal cell, so 



