GRAPTA VI. 



and at tip; antennae brown annulated with whitisli beneath; club black, yellow 

 at tip. 



Female. — Same size. 



Upper side less intense, margins more yellow; beneath lighter colored than 

 most males, but similarly marked. 



Mature Larva. — Length 1.5 inch. 



Body furnished with six rows of many branching spines; head black, with 

 short black sjiines at vertices; segments from second to eighth, both inclusive, bright 

 buff inclining to orange; remaining segments pure white. Along the sides are two 

 waved orange lines uniting irregularly; the interspaces, which are buff or white, 

 according as they are anterior or posterior, are marked with black dots; above the 

 orange lines are some faint black lines, and some black patches ai'e discernible at 

 the base of lateral sjaines; sjiiracles black, broadly bordered with white; under side 

 dull flesh color; feet and pro-legs black with pinkish tinge. 



Chrysalis. — Length 1 inch. 



Color brown, the general shaj^e as in Comma, but the mesonotal j)rocess more 

 prominent and rounded; the palpi cases more produced and compressed at base; the 

 upper tubercles silvered. 



To Mr. Henry Edwards I am indebted for the foregoing description of the 

 larva and chrysalis, and to Mr. Stretch for the drawings reproduced on the 

 jjlate. Mr. Edwards informs me that this larva was taken by him in July, 

 1871, in the Yo Semite Valley, and was feeding on Azalia occidentalis, a most 

 unexpected food-jilant for larvte of Grapta. It was raised to maturity, the change 

 to chrysalis occuring 29th of July, and the butterfly emerged 15th of August. 

 The similarity of this larva to that of C album is remarkable, inasmuch as the 

 butterflies belong to different grouj^s of the genus, while the larvae of Comma and 

 Satyrus, which species in the imago resemble phases of C album, are wholly unlike 

 the larva of the latter. 



In the description of Zcphyrus, I have sj>oken of the three elongated spots in 

 cell of jirimaries on under surface. These are found, simiUir in shape and scarcely 

 varying in position, in all the smaller Graptas. In Frogne there are very rarely in- 

 stances of same peculiarity, but almost invariably the two upper spots are united and 

 2:)roduced so as to form a long, narrow band running from subcostal obliquely to 

 median at base, and the third spot is produced in the same manner and runs paral- 

 lel to the other. Out of numbers of Graptas of other species, I have found no 

 instance of these parallel bands except in Progne. In the figure of G Argentetwi, 

 (synonymous with Progne) in Kirby's Fauna Bor. Amer. these stripes are well in- 

 dicated. 



