BUTTERFLIES OP THE DISTRICT OF COLUMBIA 195 



inner ends are truncated or rounded. In the first form these spots 

 are about as long from base to apex as the distance between their 

 bases and the submarginal yellow spots. 



The yellow band on the hind wings is about twice as broad as in 

 the common form, the uppermost spot being about twice as broad 

 as long. In spite of this, so great is the enlargement of the yellow 

 spots on the fore wings that the amount of yellow on the fore and 

 hind wings seems evenly balanced instead of there being an excess 

 of yellow on the hind wings as in the usual type. In flight the dif- 

 ference between this and the preceding form is very conspicuous. 

 Like the other, this form occurs in both a clear light yellow and an 

 ochreous phase. The blue spots on the hind wings are absent or the 

 one nearest the anal ocellus, and sometimes the next also, is faintly 

 indicated. 



In the third form (pi. 42, fig. 1) the spots of the inner row on 

 the fore wings are reduced in size and widely separated at the base. 

 The lowest is a broad dash, the next is crescentic, and the remainder 

 are triangular. They are not half so long from base to apex as the 

 distance separating them from the submarginal spots. 



On the hind wings the uppermost spot is only half as broad as long, 

 and the yellow band, which is continuous with the row of yellow 

 spots on the fore wings, is scarcely more than half the usual width, 

 there being only a very small spot of yellow, or even none at all, 

 within the cell. The blue markings on the hind wings resemble 

 those in the common form. 



Although the second form, with the extended yellow markings, is 

 rather rare, the third, with the yellow marldngs much restricted, is 

 not uncommon. 



An individual caught in the District (pi. 43, fig 2) resembles the 

 first form, but on the hind wings there is no yellow in the cell above 

 or below, so that the yellow band is narrowest in the middle. 



In another individual (pi. 43, fig. 1) the submarginal yellow spots 

 on the fore wings are enlarged ; a conspicuous yellow bar crosses the 

 end of the cell on the fore wings ; there is no yellow in the cell of the 

 hind wings ; all but the last two of the submarginal spots on the hind 

 wings are orange, the depth of color decreasing posteriorly; the anaj 

 ocellus is without the central black dot ; and all the yellow markings 

 are darker than usual. In this individual the fore wings are rather 

 short. 



In an otherwise normal individual there is no trace of black in the 

 anal ocellus. 



A number of other variants have been described, but have not 

 been found within the District. In one of these {calverleyi) the 

 yellow triangular spots on the fore wings are extended outward and 

 fused with the submarginal spots, and the hind wings are almost 



