510 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



gradates and 1st r slightly darker than other cross-veins which are 

 yellowish or pale; longitudinal veins yellow, darker around radial 

 cross-veins and from outer gradates to margin; Rs forked almost 

 under but slightly basad of level of point of coalescence of Sc and Rl ; 

 Cul with two branches to margin; six outer gradates, including a 

 sectoral cross-vein. 



Female genitalia (fig. 24, a) : Eighth tergite slightly shorter medio- 

 dorsally; ninth tergite with each lateroventral half large, considerably 

 elongate, anterior margin about one-half and posterior width about 

 one-third of length, dorsal margin sloping posteroventrally in a weak 

 curve from anterior margin, ventral margin curving posteroventrally; 

 tenth tergite tapering slightly lateroventrally. 



Holotype: a female (in alcohol) from Corry River, Brazil, July 1 

 (Parish) ; MCZ. 



The holotype has the tip of the right antenna missing (61 segments 

 remaining in right antenna, 67 in left). The abdomen is in poor 

 condition, but the genitalia are fairly well preserved and distinct. 



Paratypes: 40 females (37 pinned, 3 in alcohol), all collected by 

 H. S. Parish. Brazil: "Corry" River, July 1 (22 in MCZ, 5 in USNM) ; 

 "Santa Felipe," June 24 (1 in MCZ), June 26 (1 in USNM) ; Tapajos, 

 June 30 (1 in MCZ, 1 in USNM), "June 31" (2 in MCZ). Peru: 

 Iquitos, May 8 (1 in USNM), May 12 (1 in MCZ); Napo River, 

 June 6 (1 in USNM), June 8 (2 in MCZ), June 16 (1 in MCZ, 1 in 

 USNM). 



The female paratypes differ in the forewing in the location of 3d 

 r extending to the fork of R2 + 3, to one branch of the fork (R2), or 

 to R2+3 (most often) ; 2d r to Rs or the fork of Rs (into R2+3 and 

 R4 + 5) (rare); the branches of Cul from three to five (three most 

 common). There is color variation in the face, which is sometimes 

 brownish; the number of antennal segments averages 65, although 

 from 58 to 67 were found. The average length of the forewing is 4.2 

 mm. and width 1.5 mm.; the average length of the hindwing is 3.7 

 mm., width 1.4 mm. 



The male is unknown. 



Adults have been collected from May 8 to July 1 in Brazil and Peru. 

 It appears from the account of the itinerary of Parish up and down 

 the Amazon River, as quoted by Alexander (Proc. Acad. Nat. Sci. 

 Philadelphia, pp. 39-103, 1921) that Parish collected at the Tapajos 

 (River) in 1919, and at Iquitos, the Napo River, "Santa Felipe," 

 and the Corry River in 1920. It was not possible to locate the Corry 

 River or Santa Felipe as such on maps of Brazil, but it is probable 

 from the dates that the "Corry" River refers to the Coary (or Coari) 

 River, and it is possible that "Santa Felipe" may either refer to a 

 locality with a similar name (as Sao Felip(p)e, of which there are 

 several in Brazil) or to a place not of sufficient importance to be in- 



I 



