28 CYRTIDAE or NORTH AMERICA 



The body is more inflated than in Eulonchus as a rule (see 

 Plate II, fig. 11). Pleura inflated, the humeral calli quite large. 

 Thorax and scutellum distinctly pilose in most species. Scutel- 

 lum rather short and wide. Abdomen large and swollen. Male 

 genitalia of the same general type as found in the other genera of 

 the family. The female genitalia are retracted. Legs mod- 

 erately strong, with a tooth-like apical spur above and a sharp 

 projection below. Wings rather long and narrow with a very 

 complex venation. (See Plate I, fig. 1.) 



Wiedemann described three species in two genera, of which he 

 placed the one in the Bombyliidae, the others in the Cyrtidae 

 (Henopier). The latter he took as identical with Panops 

 Lamarck, with which it undoubtedly agreed in the long proboscis 

 and the three-jointed antennae, but in the location of the latter it 

 differed. Macquait correctly recognized the relation of Wied- 

 mann's Panops and Lasia, but followed Wiedemann in that he 

 placed the Brazilian species under Panops Lamarck; their proper 

 place is in the genus Lasia. 



The venation of Lasia, which has been explained in the general 

 summary of the family, is very close to that of the Nemestrinidae. 

 The auxiliary, first, second and third veins are simple, the first 

 and auxiliary veins being long. The third vein has a short prae- 

 furca, a thick discal cross-vein arising near it, running almost 

 parallel with the upper branch of the third vein until near its end 

 where it goes into a fork, the branches about equal and ending 

 before the wing tip. At the fork is a supernumerary cross-vein 

 tying the third vein to the upper branch of the fourth longitudinal 

 near the end of the discal cell. The discal cell is very long and 

 narrow and emits three veinlets, the upper in line with the upper 

 side of the discal cell, the second sloping down somewhat, the 

 third recurrent and closing the fourth posterior cell. The fifth 

 vein is forked in almost the usual way and the upper branch just 

 connects with the discal cell (no cross-vein), then diverges until 

 caught by third vein from discal cell, bends down to wing margin. 

 Lower branch of fifth longitudinal slopes down and joins anal 

 vein, closing anal cell consideral)ly before margin. First basal 

 cell short and broad, but the long cell above the discal cell is really 

 a portion of the first basal and not a portion of the first posterior 

 cell. Second basal rather long and narrow. The discal cell is 

 absent in Hirmoneura (Nemestrinidae). 



