194 



Annals Entomological Society of America [Vol. XV, 



Briefly, costa lies in the front margin. The next vein 

 behind costa is the single branched sub-costa. Radius is five 

 branched, the radial sector leaving Ri near the base. R2 turns 

 forward to the front margin, while R3 fuses with R4 and R5 

 fuses with Mi. The other veins do not depart from the 

 hypothetical type of the Hexopoda in general; media being 

 four branched, cubitus being two branched, and the three 

 anals being present. 



LAMFYRIOAE I LAMPYRIDAE F LAMPYmOAE HI 



LAMPYPIDAE MT 



LAJ^PYPIOAE V 



LAMPYPlDAe -ET 



LAMPyPI-DAE JZU 



LAMpyj^/oAc vm 



HVPOTHETrCAL TYPE 



Fig. 1. 



I. Calopteron reticulatum Fab. VI. 



II. Podabrus tricosfatjis Sa3\ VII. 



III. ChauJiognathus pennsylvanicus Fab. VIII. 



IV. Photinns pyralis Linn. IX. 



V. Photinns marginalis Lee. 



Eros aurora Herbst. 

 Pterotiis ohsciiripennis Lee. 

 Caenia dimidiata Fab. 

 Hvpothetieal Coleopterous 

 Type. 



COLEOPTEROUS WINGS IN GENERAL. 



It is possible that costa is not always present, but whenever 

 it occurs, it always lies in the front margin. 



Sub-costa lies in the normal position and usually fuses 

 with Ri. 



Radius 1 lies just behind Sc and is always close to the front 

 margins of the wing. In some species Ri is so thickened as 

 to almost obscure Sc. 



The Radial sector leaves Ri near the base of the wing and 

 soon branches. R2 turns forward to the margin, often fusing 



