PAl'ILIONIDAE : ANTHOCHARIDI. 1843 



of the ■ft-ing, always more distinct in tlie upper than in the lower half of the wing and 

 usually confined to the former; fringe of all the wings pale yellow, more or less min- 

 gled with brown next the brown parts of the wing. 



Beneath : /ore wings very pale greenish yellow with a slight and narrow ( J ) , or dif- 

 fused and more distinct orange (?) glow in the costal area; apex of the wing much 

 flecked with brownish scales, especially in the female, where they sometimes form a 

 spot almost as distinct as above; the marliings of the inner margin of the upper sur- 

 face are repeated beneath but often much obscured or made gray by a mingling of yel- 

 lowish and brownish scales; but tliere is always in the outer half of the wing a dis- 

 tinct series of three roundish spots in the median and medio-submedian interspaces, 

 that in the lowest median the largest. Hind icings with tlie same ground color as the 

 fore wings (,(?), or very much obscured by greenish brown so as to make the whole 

 wing of a greenish gray color with a minute whitish spot at the divarication of the 

 subcostal nervure and a pallid cloud in the outer third of tlie wing ( ? ). Expanse of 

 wings, 22-30 mm. 



This dainty little butterfly has a pretty wide distribution, chiefly in the 

 southwestern United States and Mexico. Cui'iously it does not appear to 

 occur in the United States anywhere east of Louisiana, although it is 

 found in Cuba and Jamaica. It extends also thi'oughout Mexico and into 

 Central America, and in the United States from the Mississippi to the 

 Pacific. How far north it occurs on the west coast I do not know, but 

 both ^lead and Eeakirt report it from the Eocky Mountains of Colorado, 

 at from 7500'-8O00', and east of that it is found in Missouri and even in 

 Illinois. I have seen it abundant about St. Louis. 



It flies at the end of June and in July and doubtless at other times, but 

 excepting that Cockerell took a specimen in southern Colorado on Novem- 

 ber 1 , nothing further is anywhere reported regarding its seasons or history, 

 and its early stages are quite unknown, though Mr. Edwards has followed 

 them, and will doubtless soon publish the details. 



TRIBE ANTHOCHARIDL 



SYNCHLOE HiJBNER. 



SynchloeHiibn., Verz. bek. schmett.,94(1816); Pieris pars Auctorum. 

 — Seudd., Proc. Amer. acad. sc, x:27S Anthocharis pars Auotorura. 



(1S7.5). 



Imago. Head of moderate size, densely clothed with erect hairs. Front exception- 

 ally protuberant and tumid, much broader than high, the middle projecting farther 

 beyond the eyes than they in front of the antennal pits; above with a tolerably 

 sharp and distinct longitudinal sulcation; behind the antennae a broad and very deep, 

 transverse sulcation. Eyes not at all full, naked. Antennae much shorter than the ab- 

 domen, inserted tightly in deep pits, open outwardly, bringing the second joint to the 

 level of the summit; separated by twice the diameter of the second joint; composed 

 of about thirty-one joints, of which nine form an oval, flattened club, three times as 

 long as broad, more than four times as broad as the stalk, increasing regularly in size 

 on the basal half, broadly rounded and scarcely angulate at the tip, the broadest joints 

 about four times as broad as long, the middle joints of the stalk about three times as 



