NO. 1966. SYXOPSrS OF NEOTROPICAL LIMNOBiyjE— ALEXANDER. 531 



front brown; rostrum reddish; palpi dark brow-n; antcnnie: basal 

 segments rcddish-browni, third segment dull yellow at the base, 

 remainder brovm, paler, light yellow, at the tip, other segments con- 

 stricted in the middle, with the extreme base and tip light j-ellow, 

 producing an annulated effect. 



Thorax: pronotum obscure yellow. Mesonotum: priescu turn with 

 the anterior half sliming dull yellow; tuberculate pits large, comma- 

 like, located well toward the cephalic margin of the sclerite; remainder 

 of the sclerite black; scutum, scutellum and post-notum black; 

 pleurne: prothoracic obscure shinmg yellow; rennWnder of the 

 pleurre black. Halteres, stem and tip of the knob, yellow; remainder 

 of the knob, brown. Legs: coxje and trochanters dull yellow; fore 

 leg broken. Middle leg: femora brown, the tip yellow or whitish- 

 yellow, a broad black sub-apical band; tibia, basis yellow, remainder 

 dark brown; tarsi, dark brown. Hind leg: femora yellowish-brown; 

 tip whitish-yellow; a broad black subapical band; tibia, brown, paler 

 at the extreme base; tarsi, base of segment 1 and segments 4 and 5 

 brown, remainder white, or whitish. 



Wuigs: veins dark brown; cells C and Sc dull yellow; remainder 

 of the whig subhj-aline with brown markings; the whole apical third 

 of the ■ndng, a large sjiot connected with it and embracing the stigmal 

 region and the cord, a large, interrupted basal blotch extending from 

 the wing base to beyond the base of the sector, paler in the anal 

 cells, a large spot in the ends of cells Cu and first A. Venation: 

 Sc long, ending beyond the origin of Ks; r inserted far back from 

 the tip of R, so that Rj beyond r is about two-fifths of the distance on 

 Rj between Sc, and r. Rs rather square at its origm; R2+3 short, 

 about as long as the basal deflection of Cui. Basal deflection of Cu, 

 opposite the fork of il; Mj-l-Cuj equal to M3 alone. (See fig. 2.) 



Abdomen: terguni dark slihiing black; apical half of each segment 

 paler, brown; hypopygium light reddish-yellow, the tips of the apical 

 appendages brown; sternum, apical two-thirds of each segment browoi, 

 biisal third black. 



AUoiype. — Female, length, 6.3 mm.; wing, 5.9 mm. Very similar 

 to the male, the costal and subcostal cells of the wings are not yel- 

 lowish but brown. The fore legs are present; apical two-thu-ds of 

 the femora dark brownish-black; tibiae and tarsi blackish. 



Tlahitat. — Holotype. — Male, Tabernilla, Canal Zone, Panama (Aug. 

 Busck). 



Allotype.— Female, Igarajie Assu, Parfi, Brazil, January 24, 1912 

 (Parish). 



Holotype.— la U. S. National ^Museum collection (No. 14935). 



Allotype. — In Cornell University collection. 



