AUSTRO-MALAYAN DIPTERA 443 



which are only subcontiguous in the male, and by its uni- 

 formly metallic color. 



The scutellum is parallelopidal, its breadth being nearly three 

 times its length ; its hind margin is nearly straight in the 

 middle, rounded on the sides only, and the edge is sharp , cut 

 off by a deep groove , running parallel to it. 



The glabrous eyes are approximated for a very short distance 

 in the male , but without actual contact , as there is a short , 

 polished, black, linear interval between them; the vertical trian- 

 gle is nearly twice as long as the above described black linear 

 interval , and the ocelli , placed in its apex , are more distant 

 than usual from the occipital edge. Frontal triangle likewise , 

 unusiially long. Antennae inserted on a projection under which 

 the face is hollowed out, as far as the very considerable facial 

 gibbosity above the oral opening. Arista bare. The venation is 

 like that of Eristalis, but the anterior crossvein is a little beyond 

 the middle of the discal cell ; the surface of the wings is clothed 

 with a dense microscopic pubescence, which is much more di- 

 stinct here than in Pteroptila^ and to which the dark color of 

 the wings is chiefly due. The abdomen is rather broad oval ; 

 the male hypopygium is concealed under the fourth segment. 

 The hind femora are but slightly incrassated, but the hind tibiae 

 are strongly compressed from the sides and therefore broader , 

 especially on their distal half. 



Solenaspis Beccarii n. sp. c/'. Metallic green, shining, with a 

 delicate fulvous pubescence ; legs black ; wings brown. Length : 

 14-15 mm. 



Face black, with a silvery down , and some yellowish hairs 

 near the eyes ; antennae black, arista reddish-brown ; front and 

 vertex metaUic green ; the narrow space separating the eyes 

 (in c/'), black , shining. Thorax metallic green , with a fulvous 

 pubescence , which interferes but little with the lustre of the 

 dorsum ; upon the latter , some indistinct purplish stripes are 

 perceptible; on the pleurae, the yellowish hairs almost conceal 

 the metallic ground color. Scutellum metallic green, its posterior 



