Triacanthagyna and Gynacantha 47 



J. H. W. noted of the male taken by himself on June 6 at Campamiento, 

 Colonia del Perene, elevation 08o meters : Twilight flier at the crossing of 

 the trail and Quebrada Repressa, 5 150 P. M., rare and difhcult to catch. 

 The female we took at Tachira, elevation 364 meters, was flying erratically 

 along the railroad track when it was nearly dark. 



Material examined: I'cnczuela, Tachira, Dept. Tachira (April 10, 1920, 

 I female, E. B. W.) ; Peru, Campamiento, Colonia del Perene (J. H. W illiam- 

 son, June 4-6, 1920, 3 males, i female, E. B. W.), San Ramon (J. C. 

 Bradley, June 16, 1920, i female, Cornell), Yurimaguas (H. S. Parish, 

 April 3, 1920, I female, E. B. W.) ; Brazil, Santarem (S. M. Klages, May, 

 1919, I female. Ace. 6324, Cam. Mus.). Type male and allotype female, 

 Campamiento, Peru, June 5 and June 4, 1920, respectively, E. B. W. For 

 a possible additional record see text under croceipennis. 



Gynacantha gracilis Burmeister 

 3, 6, 8, 9, 10, II, 20, 25, 26, 38. 



Abdomen male 60-62, female 58-62 ; hind wing male 57-62, female 57-63 ; 

 superior appendage male 6.4-8.2, female 8.2-9.4 ; stigma front wing 5-6.2. 



Female appendages with the outer edge relatively straight, inner edge 

 widening from the slender base to about two-thirds the length of the ap- 

 pendage where the maximum width is about i or i.i, from which it tapers 

 gradually to the acute apex ; a low median dorsal longitudinal carina is 

 more or less evident. 



The following notes on living colors were kindly given me by Dr. Calvert : 

 Male, forest near highest reservoir, upper Banana River, Costa Rica, No- 

 vember 9. Eyes ranging from blue above through green adjoining the 

 genae, yellow to reddish brown along the postero-inferior margin. Frons 

 brown with a superior black spot ; nasus olive ; labrum and external surface 

 of mandibles yellowish ; labium pale brownish green. Thorax chiefly grass 

 green with an ill-defined brown antehumeral stripe, a narrow brown stripe 

 on the second lateral suture, and a superior brown stripe on the mete- 

 pisternum; pectus pale brown. Abdominal segment i luteous with a 

 posterior dorsal blackish spot ; 2 dark reddish brown, a middorsal line, a 

 transverse median line and a posterior transverse stripe blue, and all 

 interrupted; auricles blue above, black margined; 3-10 dark brown, almost 

 black ; 3 flesh colored laterally on the basal two-thirds, with a basal blue 

 spot on each side; a fainter blue spot just posterior to the median transverse 

 carina on each side of 3-8, becoming fainter on each successive segment; 

 ventral surfaces of 3-10 pale reddish brown with a trace of blue near the 

 middle of each. Legs dark red. knees and tarsi black. 



Material examined: No locality (^lus. Berol., i female, M. C. Z.) ; 

 Costa Rica, probably Ontario Farm (C. H. Lankester, September 15 and 18, 

 1919, I male, i female, A. N. S.) ; Ecuador, Quevedo (F. Campos R., i fe- 

 male, A. N. S.) ; Bolivia^ Rio Yapani, 650 m., Dept. Santa Cruz (Jose 

 Steinbach, 1914-1915, i female, Ace. 5574, Carn. Mus.) ; I'enezuela, La 

 Fria, Dept. Tachira (H. B. Baker, April 12, 1920, i male, E. B. W.) ; 

 British Guiana, Kartabo, Bartica Dist. (W. T. 'SI. Forbes, October, 1920, 



