DESCRIPTION OF THE SPECIES. 303 



Yellowish-gray ; bead whitish ; front, antennae, scutellum, and feet yellow ; 

 the abdomen with two longitudinal rows of black spots ; wings some- 

 what broad, and with the exception of the extreme basis, entirely covered 

 with a guttate brownish-black reticulation ; the drops are of a very uu- 

 equal size and less numerous upon the apex and in the vicinity of the 

 posterior crossvein; the black stigma has a hyaline drop ; third longi- 

 tudinal vein not bristly ; ovipositor of the female deep black ; as long 

 as the last two abdominal segments taken together. Long. corp. £ 

 0.13, 9 0.16; long. al. 0.15—0.10. 



Yellowish-gray; thorax and abdomen with whitish-yellow pile ; 

 the latter with two longitudinal rows of black or blackish dots. 

 In well-preserved specimens the head is white, and it probably 

 has the same color in living ones ; in some of the dried specimens 

 it has assumed a yellowish hue ; the front, with the exception 

 of its lateral margins, is yellowish ; the usual bristles upon it are 

 almost without exception black ; the bristles upon the vertical 

 margin are pale yellowish. Antennae pale yellowish ; the third 

 joint has an almost sharp anterior angle. Oral opening large, 

 somewhat longer than broad ; the anterior edge of the mouth 

 rather drawn upwards, somewhat projecting in the profile. Palpi 

 pale yellowish. Proboscis yellowish, short geniculate, with but 

 moderately prolonged, comparatively stout flaps. The upper 

 half of the occiput is gray, with the exception of the margin 

 along the orbit. The ground color of the humeral callosities is 

 yellow, while upon the rest of the thorax it is blackish. The 

 bristles of the thoracic dorsum are all black, those of the pleura? 

 are partly black, partly pale yellowish. Scutellum pale yellow ; 

 lateral angles and sometimes also the basis darker ; with four 

 black bristles. The bristles upon the posterior margin of the 

 last abdominal segments have the same pale yellowish tinge as 

 the pile upon the abdomen ; only exceptionally a dark bristle is 

 sometimes found among them. The ground color of the abdo- 

 men is not quite constant ; as a rule, it is blackish ; I possess 

 specimens, however, in which, upon the posterior margin of the 

 second and third segments, it is yellowish-red. The ovipositor 

 is shining black, rather strongly contracted towards its end, as 

 long as the last two abdominal segments taken together; their 

 short pile is very delicate and hence somewhat difficult to dis- 

 cern; it seems to have the same coloring as the pile on the abdo- 

 men. Feet saturate yellow. The wings have an almost regularly 

 elliptical shape and are somewhat broader in the female than in 



