110 Annals of the Carnegie Museum. 



nodal cells distal to the quadrilateral ; stigma dark brown with a pale 

 marginal line just within the enclosing veins, surmounting more than 

 two cells or their equivalent ; front wings with 18-19 postnodals, hind- 

 wings with 16 postnodals. 



9 . Differs from the male as follows : Dorsal surface of the head pale 

 reddish-brown, a transverse black stripe on the posterior margin ; a 

 transverse black line beginning behind each lateral ocellus, running 

 toward the eye but forking before reaching it ; the elongate black spot 

 between each antenna-base and the adjoining eye described for the 

 male is present, but larger, and in the same transverse line with these 

 spots is a transverse black stripe between the two antennae, the three 

 thus forming a transverse black stripe from eye to eye in front of the 

 median ocellus, but interrupted by each antenna; frons, nasus, genae, 

 lips, and rear of head yellow, free margin of, and a mid-basal spot on, the 

 nasus black ; mid-dorsal longitudinal black stripe absent from the pro- 

 thorax, but the spot on the hind lobe almost as large as in the male ; 

 remainder of thorax perhaps pale yellow instead of blue ; dorsum marked 

 as in the male, but with a paler brown ; mesepimeral and metepisternal 

 brown stripes on the contrary darker and more sharply defined than in 

 the male ; brown on the abdominal dorsum paler, posterior sixth of 

 6 barely and of 7 not at all darker than the remainder of those 

 segments ; 8 with merely a mid-dorsal longitudinal black line ; no dark 

 markings on 9 and 10; abdominal appendages longer than 10, half 

 as long as 9, reddish, black at the acute tip ; genital valves reach- 

 ing so far backward as to slightly exceed the level of the apices of the 

 appendages, their inferior margin minutely denticulate; legs pale 

 yellow, femora with a darker superior and a darker inferior longitudi- 

 nal line or stripe, inferior surfaces of tibiae darker ; wings slightly 

 smoky, distinctly wider, 17 postnodals on the hind pair. 



Abdomen J 1 37, 9 35-5; hind wing cT 23, 9 25.5, its maximum 

 width cT 3.7, 9 5 ; costal edge of stigma, front wing, cT 1.1, 9 1.3, 

 posterior edge of same cT 1.6, 9 J -8 mm. Genital valves, 9 3 mm. 

 long. 



Habitat. — Peru: Iquitos, Staudinger, 1 c? ,1 9. Museum of 

 Comparative Zoology. 



This pair closely resemble the descriptions of H. icterops Selys, but 

 differ therefrom in the longer abdomen of the male (^icterops 32 mm.), 

 pterostigma surmounting more than two cells (less than two cells in 

 icterops), in having no black between the antennae in the male (in 



