624 ■ PROCEEDINGS OF THE ACADEMY OF [NoV., 



of the gradates near end of the series black; stigma indistinct. 

 Antennae but Uttle longer than wings, pronotum much broader than 

 long, but little narrowed in front; abdomen short, the tip of the 

 last ventral segment roundedly produced in the middle. Wings 

 long, barely acute, costal area not very wide; about 18 radial cross- 

 veins before stigma; radial sector arises nearer base than usual, the 

 second cubital cell is fully as high, as long on upper side, the third 

 oblique, and very obliquely divided, about 13 gradates in each 

 series, wide apart, the inner series curving up and getting near the 

 radial sector, in the fore wings between the two series are two or 

 three gradates of an intermediate series; many of the outer forks 

 fully four or five times as long as wide. Expanse 65 mm. 



From Limon, Costa Rica, 24 May, Schaus. The largest species 

 of the genus. Type in U. S. National Museum. 



Allochrysa torquatus Navas. 



Similar to A. nigriceps, but larger, and the pronotum pale, and 

 longer, and narrowed in front. Head, basal joints of antennae, and 

 thoracic notum black. Wings marked as in A. nigriceps, but the 

 stigmal spot does not extend so far inward, and that at the end of 

 the cubitus is larger and does not extend out along the gradates; 

 in hind wings there is no spot at end of the cubitus. Expanse 

 45 mm. 



From Alajuela, 9 April, Trinidad River, 2 May, Panama (Busck). 

 In U. S. National Museum. Navas has lately described this species 

 from Guatemala under the name "Gonzaga torquatus.'^ There is 

 not the slightest need of a generic name for this section of the genus 

 Allochrysa, which also includes A. nigriceps and A. paUiceps. 



Leucochrysa cinctipes n. sp. 



Rather grayish yellow; last joint of palpi black, faint marks on 

 face, faint line on the outer side of basal joint of antennae; legs 

 with faint dark bands on tips of femora, near base and tip of tibia, 

 and the extreme tip of tarsi black. Wings hyaUne, with gradates 

 gray, many cross-veins brown at ends; stigma whitish, with dark 

 spot at each end, in hind wings there is a faint cloud over the end 

 of cubitus, near the margin, ends of veins on all of margin brown; 

 fore wings with gradates 6 7; in fore wings the radial sector has no 

 connecting cross-vein near its base to the third cubital cell, but 

 there is a cross-vein b(>fore the radial sector to the third cubital 

 cell. Expanse 30 mm. 



From Corazal, Canal Zone, Panama, 11 June (Busck), Type in 



