HENRY SKINNER. 



173 



26. Secondaries below with a distinct triangular white spot below 



centre of costa yuccae. 



Secondaries without this spot cotatiui. 



27. Thorax and basal area of secondaries clothed with green hairs. 



proteus. 

 Not so clothed 28. 



28. Primaries above with distinct spots 29. 



Primaries with or without a distinct narrow band 30. 



29. A distinct white or silvery fascia on underside of secondaries. 



filbofasciatiis. 

 Without such fascia protillus rauterbergi. 



30. With costal fold in the male simplichlS. 



Costal fold absent in the male eurycles. 



Eiidaiims (Thorybes) electra Lintner, Can. Ent., 13, 63, 1881. 



"Size of small Nisoniades juvenalis. Primaries narrower than in 

 Eudamus py lades Scudd. 9 . More rounded on the costa, and more 

 oblique on the hind margin. Secondaries rounded, not prolonged on 

 the anal angle as in E. pylades, not excavated opposite the cell as in 

 most of the Nisoniades . General color dark brown, approaching that 

 of E. pylades ; the fringes concolorus with the terminal portion of the 

 wings, a little paler at their tips. Primaries with eleven transparent 

 white spots, upon which an ordinary lens shows regular rows of small 

 black scales; the spots, as follows: Near the end of the cell (appar- 

 ently open) are two spots, separated by the cellular fold and extending 

 to the enclosing veins (subdorsal and median), the upper one twice as 

 large as the lower and prolonged backward superiorly in one or two 

 teeth — the lower one subtriangular in shape ; above and in line with 

 these two, in cell 10, is a small elongated spot — the smallest one on the 

 wing, while beneath them and in range, in cell 2, extending from vein 

 2 to vein 3, is the largest spot on the wing, enlarged superiorly and 

 excavated inwardly. Outside of this discal band of four spots are 

 seven others, bordered by dark brown, and arranged in an irregular 

 curve as follows : in cells 9, 8 and 7, three costo-apical spots oblique 

 to the costa ; outside of these, in cell 6, a spot ; in cell 5, still nearer 

 the margin, another; in cell 4, a little farther removed from the mar- 

 gin, another — these last three subtriangular in shape ; in cell 3, extend- 

 ing from vein to vein, a subquadrate spot, placed farther from the 

 margin, about equidistant with the lower costo-apical spot ; these 

 seven spots, commencing at the costa and omitting the fifth, show a 

 regular increase in size. Outside of these transparent spots is a series 

 of obscure dark brown internervular sub-terminal spots which merge 

 into the dark brown shade of the margin. Inside of these spots the 

 wing shows by oblique light a purplish reflection approaching a grape 

 bloom but much more vivid, with the exception of the internal margin 

 and two brown bands of the color of the outer margin and posterior 



TRANS. AM. ENT. SOC, XXXVII. 



