220 DOLICHOPID.E. 



Mouth large, prominent, black. Thorax with three brassy-brown 

 stripes, slightly hairy on each side. Wings hyaline ; cubital and prse- 

 brachial veins approximating towards the tip ; transverse discal vein 

 rather long, inclining towards the interior margin ; pobrachial vein 

 inclining beyond the transverse vein to the hind border, which it does 

 not attain ; axillary alulae and halteres whitish. Legs black, naked, 

 unarmed ; knees ferruginous ; hind femora pubescent on the outer 

 side. Male. Hypopygium rather smaller ihan that of M.jaculus. 

 Not rare. (E. I.) 



Genus XV. APHROSYLUS. 



Antennae articulo tertio apice attenuate, arista apicali. Proboscis incur- 

 va, apice unguiculata. Vena transversa prope marginem alee. Hypo- 

 pygium marls subglobosum, lamellis geminis in/lexis. Coxce anticce 

 muricatfs. 



Antenna with the first joint naked, second transverse, the third joint 

 attenuated to the tip ; arista apical. Occiput convex, with a pale beard 

 behind the lower orbit. Eyes pubescent, distant on the front, ap- 

 proaching closely below the antennas in the male at least. Palpi pro- 

 truded, oval, very large in the male. Proboscis shorter than the head, 

 conical, somewhat compressed, incurved towards the prosternum, 

 receding from the palpi, and armed at tJie tip with a short stout 

 spine (the projecting extremity of the tongue). Wings oblong, the dis- 

 cal transverse vein distant by much less than its own length from the hind 

 margin, the subapical vein nearly straight and parallel with the cubital. 

 Abdomen finely pubescent, with the first segment not longer than the 

 second ; in the female, of five segments and somewhat conical ; in the 

 male, of six segments, a little compressed behind, rounded at the tip, 

 and enlarged by the protuberance of the hypopygium ; this is nearly 

 globose, deflected, furnished at the tip beneath with two. broad inflated 

 lamella, and some slender appendages between them. Legs long ; the 

 outside of the tibiaa, and the femora towards the tip, armed with some 

 spines ; the whole anterior surface of the fore coxce and the under side 

 of the fore trochanters beset with spines ; the fore tibia armed with a 

 strong spine or spur at the tip inside ; the third metatarsus longer than 

 the following joint ; the onychia more thickened to the tip with pubes- 

 cence than is usual in this family. 



The form of the head, the antennae, and the direction of the 

 proboscis, resemble some of the Empida, as the genus Chersodro- 

 mia. In the general form and the wings, the strongest likeness 

 is to Hydrophorm, and the fore legs are armed yet more formidably 

 than in that genus. The known species both frequent the verge 

 of the sea. 



