The Genus Perilestes 11 



Abdomen seen from above: 1 pale with obscure and indefinitely pat- 

 terned median brown from base to apex, darkest at apex ; 2 similar to that 

 of remotus but the median longitudinal pale stripe duller, not as sharply 

 patterned; 3 as in remotus but the postbasal pale area more or less re- 

 duced; 4-6 as in remotus, but the anteapical pale area of 6 is discernible 

 in cornutus, and the pale postbasal area of the same segment is less ex- 

 tensive; 7 brown, slightly and indefinitely paler postbasally; 8 brown, the 

 apical half or two-thirds indistinctly darker; 9 nearly black; 10 black. 

 Seen from the side similar to that of remotus but on 3-6 the postbasal 

 pale area is slightly reduced as compared with remotus and on 3 the ster- 

 num, opposite the median dark area, is pale, not dark as it is in remotus ; 

 7 with the postbasal pale area more extensive in cornutus than in remotus 

 and with traces of the same area on 8 in cornutus; anterior lamina and 

 posterior processes of 2 largely dark; lateral color pattern of ^6 carried 

 across the sterna; sternum of 7 largely dark, the basal fifth, or slightly 

 more, pale ; sterna of 8-10 bright pale colored, yellow (?) or more probably 

 blue (?) in life. Appendages largely dark colored, black along the outer 

 edge, shading out to brown on the inner edge and on the extreme base 

 and apex; on the dorsal surface just basal to the spine is a smooth shal- 

 low elliptical depression which is nearly or quite white (possibly bright 

 blue in life). 



Length of the wing or lobe on the expanded postero-ventral margin of 

 the tergum of 2 about .7, and the distance from the apex of this lobe to 

 the antero-ventral angle of the tergum about 2.2. 



Venational characters based on four males 



Postnodals front wing, 13 (25%), 14 (25%), or 15 (50%) ; hind wing, 



11 (12.5%), 12 (12.5%), 13 (62.5%), or 14 (12.5%). 



M3 in front wing arising between the first and second postnodals 

 (100%) ; in the hind wing at the first postnodal (50%), or between the 

 first and second postnodals (50%). 



Rs in front wing arising at the seventh postnodal (37.5%), or at the 

 eighth postnodal (62.5%) ; in the hind wing at the sixth postnodal 

 (12.5%), at the seventh postnodal (62.5%), or at the eighth postnodal 

 (25%). 



M2 in front wing arising at or near the eighth postnodal (37.5%), or 

 at or near the ninth postnodal (62.5%) ; in the hind wing at or near the 

 seventh postnodal (37.5%), or at or near the eighth postnodal (62.5%). 



Mja in front wing arising three cells before the stigma (75%), or four 

 cells before the stigma (25%) ; in the hind wing two cells before the 

 stigma (12.5%), or three cells before the stigma (87.5%). 



Number of cells posterior to Cuo in front wing, 13 (37.5%), 14 

 (37.5%), 15 (12.5%), or 16 (12.5%) ;'in hind wing, 9 (25%), 10 (12.5%), 



12 (25%), 13 (12.5%), 14 .(12.5%), or 15 (12.5%). 



Material examined : Brazil, Porto Velho, Amazonas, May 2 and 24, 1922, 

 5 males ; Villa Murtinho, ^Matto Grosso, April 4, 1922, 2 males ; all in coll. 

 E. B. W. 



