KEIXICOTT. Ill 



Genital hamules bifid for apical half, the anterior 

 branch shorter pointed and slightly hooked at apex, 

 posterior lobe three times as broad as the anterior, 

 apex rounded. Superior appendages with about six in- 

 ferior teeth beyond the middle. Inferior appendage four 

 fifths as long as the superiors. 



Female colored like the male or with yellowish part 

 of fore wings brighter than in that sex. Vulvar lamina 

 short, only slightly projecting, posterior margin entire. 



Taken at Columbus. Common at Sandusky in 



Diplax corrupta, Hagen. 



Length : of abdomen c? 26-29, 9 27-28 ; hind wing d 

 28-30, 9 29-31. 



Male, teneral, yellowish ; front yellowish, thorax 

 with an antehumeral, a narrow humeral, and two 

 lateral bands terminated below by a bright yellow spot, 

 graysih. Abdomen yellowish, sides with the ventral 

 margins of the segments black ; dorsal spots on 8 and 

 9. Legs, at base, and superior side of femora and 

 tibise yellow, other parts black. Wings nyaline with 

 veins and pterostigma yellowish. 



The male when fully colored is red. The markings 

 on the thorax are reduced to the two bright yellow 

 points or spots on each side. The legs are like those of 

 the teneral form. The venation of the wings is red- 

 dish. Genital hamules small, apical third bifid, an- 

 terior branch short, sickle form and acute at apex ; 

 posterior branch twice as long, several times as broad, 

 directed obliquely outwards and backwards, rounded at 

 apex. Superior appendages 2 m.m. in length, yellow, 

 with a row of inferior, black denticles which begin 

 near basal third and extend to where the appendage 

 begins to narrow; apex tipped with an acute, black 

 spine. Inferior appendage three fourths as long as 

 the superiors. 



