THAITE8 RUMINIANA. 61 



traversing the cell at its broadest part) is three times as long as broad ; the third 

 transverse bar is in the middle of the wing, smaller than the first and equally slen- 

 der, extending from the subcostal nervure, just beyond the tip of the cell, almost to 

 the upper median nervule ; it is equal and straight excepting above, where it curves 

 inward following the border of the cell; the outermost is broader and more irreg- 

 ular, depending from the first superior subcostal nervule and extending nearly to 

 the upper median nervule, so that its exterior border just strikes the subcostal ner- 

 vure at its divarication far beyond the cell; the inner margin is straight and the 

 spot thus forms a transverse bar, straight and equal above the subcostal nervure, 

 but with the outer border sloping away so that the lower extremity is twice as 

 broad as the upper. The submarginal series of spots are of nearly equal size, the 

 uppermost largest, the next two smallest; each set of three forms a nearly straight 

 line, but all together they follow a strong curve which approaches close to the 

 border in the lowest subcostal interspace, being separated from it by but its own 

 width; above this they recede rapidly from the border, the outer edge of the in- 

 nermost being next the fork of the second superior subcostal nervule; but below, 

 the 8f>ot8 are parallel to the outer border and separated by about an interspace's 

 width from it; the upper spots are transversely broad ovate; the lower transversely 

 subquadrate; apparently the fringe is exceedingly short and concolorous as in 

 Parnassius. 



The basal parts of the hind wing are almost uniformly dark, excepting that 

 there is a paler suffusion in the outer part of the cell; beyond, the wing is clouded 

 with darker, transverse, strongly curving, powdery stripes; the most conspicuous 

 of these is one which crosses the wing a little outside the middle of the portion 

 beyond the cell; it takes its rise in a darker spot, which borders the wing just 

 above the tip of the upper subcostal nervure, and runs in a nearly straight line, 

 widening as it goes, to the lowest subcostal nervule, where it reaches its greatest 

 width, and scarcely narrowing curves around to the inner border a little before its 

 tip ; on the nervules it reaches further baseward and borderward. Between this 

 belt and another similar but much less conspicuous band, half way between it and 

 the tip of the cell, are enclosed circular pale spots, one occupying the entire width 

 of each interspace below the middle subcostal nervule and a portion of the one 



MEMOIRS A. A. A. 8. 10 



