Tryon Reakirt on Coloradian Butterflies. 135 



synonym. Trene, also, as stated by Mr. Edwards, appears to be only 

 a variety, although wore plentiful, and more widely distributed than 

 the tropical form. 



The female has never, I believe, been either figured or described, I 

 consequently subjoin a short diagnosis. 



Upper surface: fore wings similar to the male: hind wings more 

 or less diluted with orange; abdominal margin and base greenish; a 

 large black patch on the outer angle, a narrow serrated terminal baud 

 from which short black veins arise ; a transverse fascia of faint 

 brownish atoms, extends from the inner side of the black patch to the 

 middle of the abdominal margin. 



Upper side: basal portion of fore wings suffused with orange, their 

 apex, sprinkled with grayish olive-green atoms. 



Secondaries, olive green thickly strewn with grayish particles, a 

 paler central transverse bar, becoming obsolete towards the abdominal 

 margin, and a lightly colored terminal border; within the cell there is 

 a small pale yellowish-gray spot. 



Anthocharis Ausonides. Boisd. 



Lucas, Guer. Revue et Mag. Zool. p. 340. (1852.) 

 Edwards, Proc. Ent. Soc. Phil. II, p. 81. (1803.) 

 Hub. — Rocky Mountains, Colorado Territory, California. (Coll. 

 Tryon Ileakirt.) 



California; Youcon River, Russian America. (Coll. William H. 

 Edwards.) 



This appears to be very rare, and has been taken only in the neigh- 

 borhood of Pike's Peak. 



Anthocharis creusa. Doubled. 



Diurnal Lepidoptera, I. p. 50, n. 6, t. 7, f, 1. (1847.) 



Hob. — " Rocky Mountains, North America." ex Genera. 



I am unacquainted with this species; its upper surface is very near 

 the preceding and they may possibly be identical. 



Colias Philodice, Godart. 



Presents about the same shades of variations, as in the East; but 

 one, a 9 , offering any peculiarity worthy of notice : in this, the disc of 

 the secondaries is suffused with blackish atoms, aud beyond a sulphur- 

 yellow terminal band, is marked with a broad black border, half the 

 length of the outer margin. 



Hub. — Pocky Mountains, Colorado Terr., (Coll. Tryon Reakirt. J 



Colias Alexandra. Edwards. 



llub. — Empire City, Colorado Territory, (Coll. Tryon Reakirt.) 



