THE WINGS OF NYMPHIDM 



195 



The hind winj^^s differ from the fore wings in that media is distinctly 

 two-branched, and it appears to arise from radius, at least the two are so 

 closely oppressed that I can see no space between them; the cubitus is 

 greatly reduced in length and is not forked, probably vein Cu2 has atrophied; 

 and the base of the first anal vein is vestigial. It is quite possible that the 

 forked vein lettered ist A in the figure is vein Cu-j -f ist A. With only a 

 single specimen before me I am unable to decide this point. 



In the fore wing some of the cross-veins are much more prominent than 

 the others; this is largely due to their being colored brown, but they are 

 also slightly stouter. 



{q) THE WINGS OF THE NYMPHIDM 



The Nymphidaj is a small family of insects that is restricted to Australia. 

 I have been able to study only a single representative of it ; this is Nymphes 

 myrmeleonides . The wings of this species are represented in the accom- 

 panying figure (Fig. 190). 



These wings are long and narrow and are furnished with many cross- 

 veins ; they possess also many definitive accessory veins and many marginal 

 accessory veins; the latter are very numerous and regular in the apical 

 portion of the wings and add greatly to their beauty. 



In general form and appearance the wings of Nymphes resemble those 

 of the Myrmeleonidas ; but they are sharply distinguished from myrmeleonid 



Fig. 190. — Wings of Nymphes myrmeleonides. See Figure 191 for the 

 labeling of the veins of the fore wing. 



wings by the following characteristics : first, the subcostal area is traversed 

 by many cross-veins, while this area is free from cross-veins in the Myrme- 

 Iconidte; second, the media of the fore wings is ob\dously two-branched in 

 Nymphes; in the M\mnelconida3 it is apparently, though not actually, 

 unbranched. 



