XX SYNOPSIS OF NEUROPTERA. 



Wings unequal. 



Posterior wings smaller. Fam. III. PSOCINA (in part). 



Posterior wings broader, or at least of the same size with the 

 anterior ones. Fam. IV. PERLINA (in part). - 



Tarsi four-articulate; wings equal. Fam. I. TERMITINA (in part). _ 

 Tarsi five- (sometimes apparently four-articulate). 

 Posterior wings with no anal space ; not folded. 



Mouth more or less rostrated. Fam. IX. PANORPINA (in part). 

 Mouth not rostrated (at the utmost only conical). 



Fam. VIII. HEMEROBINA. 

 Posterior wings with a folded anal space. 1 



Wings reticulate. Fam. VII. SIALINA. 



Transverse veins rather few. Fam. X. PHRYGANINA (in part). 

 Apterous, or with rudimentary wings ; 



Mouth rostrated. Fam. IX. PANORPINA (in part). 



Mouth not rostrated. 



Tarsi five-articulate. Fam. X. PHRYGANINA (in part). 



Tarsi four-articulate. Fam. I. TERMITINA (in part). 



Tarsi three-articulate. 



Apterous, or with two rudimentary wings of a leathery substance. 



Fam. III. PSOCINA (in part). 

 Four rudimentary wings, still with distinct neuration. 



Fam. IV. PERLINA (in part). 



i The anal space is absent in a few Phryganina. 



