0RTALIDJ3 — OEDOPA. 147 



very broad front has, somewhat below its middle, a narrow, 

 gently curved, blackish crossband, above which the single, rather 

 sparse hairs are inserted in small, somewhat darker colored pits; 

 this is not the case below the crossband; no stripes run from the 

 vertex down along the orbits of the eyes. Antennae yellow, the 

 place of insertion of the arista infuscated or blackened; between 

 the eye and the antenna there is, on each side, a transversely- 

 oval, velvet-black spot; between the antennae and next to the 

 frontal fissure is another velvet-black transverse spot; which 

 consists of two small semi-oval transverse dots. The face, 

 including the clypeus and the very broad cheeks, is more whitish 

 than the front ; the cheeks with a very delicate, easily rubbed 

 off, whitish down. Eyes during life with two narrow crossbands, 

 which are sometimes perceptible even in dry specimens. Palpi 

 yellow, with delicate, pale hairs. Thorax and scutellum whitish- 

 yellow ; the dorsum of the thorax with six parallel, blackish 

 longitudinal stripes ; the two intermediate ones extend also over 

 the flat scutellum. Pleurae with three blackish longitudinal 

 stripes, the upper one of which occupies the border between the 

 dorsum and the pleura ; quite downwards, moreover, there is a 

 stripe-shaped black spot, which, however, seems to be produced 

 by the rubbing off of the dust on the upper part of the pectus. 

 Abdomen flat and rather narrow, whitish in consequence of the 

 very dense dust which covers it ; the ground color, however, is 

 blackish, except the posterior part of the last segment in the 

 female ; the short, black hairs are inserted on small black dots, 

 which are so closely approximated in the vicinity of the lateral 

 border that they appear confluent, as irregular longitudinal spots; 

 the last segment of the abdomen of the male is very much 

 elongated; the first segment of the female ovipositor is attenuated 

 towards its end, otherwise it looks like the remainder of the 

 abdomen; its punctuation, however, is much closer and finer; 

 its adaptation to the abdomen is so close, that it might easily be 

 taken for the last abdominal segment, especially when, as often 

 happens, the black second and the yellowish third joint of the 

 ovipositor are altogether withdrawn into it. Feet yellowish with 

 whitish dust; the posterior femora generally with a blackish spot, 

 on the underside before the tip; all the tibiae with two black 

 rings, the upper one of which is narrower and usually interrupted 

 on the upper side of the tibia ; fore tarsi blackened beyond the 



