THE WINGS OF MYRMELEONIDM 



201 



In the fore wing of Tomatares clavicornis (Fig. 196), vein Cuo is still a 

 well-developed vein and is free from the first anal vein, except that the two 

 are connected by cross-veins. 



In the fore wing of Balaga micans (Fig. 197), vein Cu^ is reduced to a 

 vestige, which extends closely parallel with the first anal vein for a short 

 distance and then the two coalesce. 



In the fore wing of Brachynenmrus longipalpus (Fig. 198), only the 

 transverse basal part of vein Cu2 is distinct from the first anal vein ; but 

 this transverse part is still curved. 



The almost complete coalescence of vein Cu2 with the first anal vein 

 in the greater number of the Myrmeleonidae, as in Brachynenmrus, is doubt- 



Fig. 198.- 



-Base of the wings of Brachynemunis 

 longipalpus. 



less the reason that this vein has been overlooked by writers on this family. 

 There is also another fact that has led to the overlooking of vein Cu2; in 

 most of the M\T-meleonidffi vein Cui of the fore wings bears a prominent 

 accessory vein, vein Cuia (Fig- i97)> which has been mistaken for vein Cu2. 

 Let us now pass to an examination of the hind wings. 



Media of the hind wings. — Up to the present time the belief that media 

 of the hind wings of mynncleonids is reduced to an tmbranched condition 

 has been undisputed ;' and an explanation of the way in which this condi- 

 tion has come about has been eagerly sought; hundreds of m^mneleonid 

 wings have been examined in the hope of finding an oblique vein in the 

 hind wing like that of the fore wing, but without success; and an examina- 

 tion of pupal wings seemed to throw no light on the subject. This was the 



