488 R. OSTEN SACKEN 



Dipiochorda ophion n. sp. 9. 



Head , antennae and palpi yellow : arista black ; a double , 

 brown spot on the front, about midway between antennae and 

 ocelli. Thorax yellow ; a narrow brown line in the middle of 

 the dorsum, interrupted anteriorly before the collare ; the suture, 

 on each side, is tinged with brown, which color expands into a 

 larger spot, about midway between the root of the wings and 

 the humerus ; a brown streak between this spot and a smaller 

 dot in front of the humerus ; an oblique brown streak in the 

 middle of the pleurae and a brown shadow above the posterior 

 coxae. Abdomen black , as far as the middle of the first seg- 

 ment ; yellow beyond , with two large , osculant black spots , 

 occupying (one each side), the end of the first and the sides of 

 the 2^ and 3*^ segments. Ovipositor ferruginous-yellow , a little 

 longer than the four last segments taken together. Halteres 

 yellow' legs yellow, femora with faint vestiges of a brownish 

 ring ; front coxae brownish ; tarsi brownish , hind metatarsus 

 yellowish. Wings subhyaline ; costal border, inside of the third 

 vein, brown ; near the apex this color crosses that vein, encroa- 

 ching a little upon the first post. c. ; an irregular brown cloud 

 along the fifth vein, inside of the third post. c. ; it is connected 

 with the brown on the costa, across the crossveins closing the 

 basal cells. Length : 6-7 mm. (without the ovipositor). 



Hah. Hatam, New Guinea, July 1875 {Beccavi); one female. 



NB. The specimen being a female , the costa is not expan- 

 ded ; the venation differs from that of D. myrmex 9 as follows : 

 the first, second and third veins run closer to each other and 

 to the costa, hence, the cells between them are narrower; the 

 last section of the third vein is more curved ; the antepenulti- 

 mate section of the fourth vein less curved, than in myrmex; 

 the anal cell less drawn out in a point ; the posterior crossvein 

 more straight. 



Diplochorda myrmex n. sp. 9. 



Head yellow ; third joint of the antennae brownish , arista 

 black ; a triangular brown spot on the face, at each end of the 



