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ENTOMOLOGICAL NEWS. 



[April, '06 



Notes on the True Neuroptera. 



J. F. McCLENDON. 



2. On Venation in Neuroptera. 



The wings of Neuroptera have been variously treated by 

 systematists, and a few species have been considered by Corn- 

 stock and Needham in their excellent series of articles in the 

 32d and 33d volumes of the American Naturalist. In 1901 I 

 commenced to collect material for a developmental and com- 

 parative study of the venation of the group, but on account of 

 pressure of other duties, failed to get many pupae, and had to 

 content myself with studying the tracheation of the fully 

 formed wings by bleaching them for days in chlorine water. 



In distinguishing the veins, I have used the nomenclature of 

 Redtenbacher as applied by Comstock and Needham. 



SIALINA. 



The wings of Sialina are broad and seemingly irregularly 

 reticulated, but if we leave out of consideration the cross veins, 

 the venation can easily be reduced to the hypothetical type of 

 Comstock and Needham. The anal space of the hind wings 

 is thin and folded when at rest. 



In Corydalis texana, Fig. i, the sub-costa and radius run 



Fig. i. Corydalis texana. Fore wing. In this as well as in the suc- 

 ceeding figures, the cross veins are omitted, save where they 

 are represented by spaced lines. 



parallel nearly to the tip of the wing, where they fuse. The 

 radial sector has become pectinate by fusion of r 4 and r\ as 

 shown by Comstock and Needham. J? 2 has three side branches, 



