DESCRIPTION OF THE SPECIES. 277 



the lateral frontal border are shining; upon the first, almost 

 without exception, a very small, deep black longitudinal dot is 

 perceptible ; near the antennae, at the orbit of the eye, there is 

 a deep black dot and a black spot in the middle of the posterior 

 orbit. The face is deeply excavated, shining and sometimes with a 

 distinct steel-blue reflection ; upon its middle, below the antennae, 

 there is a rounded black spot, on each side an elongated, larger one, 

 descending from the lower angle of the eye to the oral margin ; the 

 oral opening is very large, somewhat drawn upwards anteriorly. 

 Palpi yellowish, broad, reaching to the anterior edge of the oral 

 opening, with black pile at the tip, and with yellowish hairs else- 

 where. Proboscis brown, sometimes yellowish-brown, rather 

 stout, not geniculate. The thorax unicolorous, yellowish-red 

 or reddish clay-yellow, opaque; the usual bristles, of which there 

 are two pairs on the middle of the dorsum, are black, the short 

 pile is pale yellowish. Scutellnm somewhat paler yellow and 

 rather shining, with erect yellowish bristle-like pile upon the 

 middle and with four black bristles ; the two apical ones are 

 inserted upon black dots, while round the basis of the two ante- 

 rior ones only a darker shade of the ground color is perceptible. 

 The abdomen has the same coloring as the thorax and no spots, 

 or only a trace of two longitudinal, contiguous rows of somewhat 

 darker spots; all the pile and bristles upon it are yellowish and 

 only a certain number of the bristles upon the posterior border 

 of the last segment are usually blackish. The flat ovipositor is 

 almost as long as the four posterior abdominal segments taken 

 together, red, blackish towards the tip. Feet, as well as the 

 bristles on the under side of the front femora, yellow; often, 

 however, some of the bristles are black; the front femora have, a 

 short distance before their end, on the outer side, a small black 

 dot; the posterior femora, on the under side, have two black 

 dots, the one before the middle, the other before the tip. The 

 wings are rather long; their yellowish-red, almost gamboge-yel- 

 low color ends in rays along the anterior margin, the apex and 

 the posterior portion of the hind margin ; these rays are separated 

 by hyaline intervals; between the humeral crossvein and the end 

 of the auxiliary vein there are three narrow rays, running per- 

 pendicularly from the auxiliary vein to the costa, the first of 

 which is less dark than the others; moreover, the extreme root 

 and the extreme tip of that cell are marked by a blackish-brown 



