Genus Terias 



extends inwardly beyond the nngulated point of tlie wing, and 

 by tiie different color and style of the markings of the lower side. 

 Expanse, 1.35-1.6=^ inch. 



Early Stages. — Unknown. 



Daman's occurs in Arizona, and thence ranges south into 

 Venezuela. 



(6) Terias westwoodi, Boisduval, Plate XXXVII, Fig. 11, 5 

 (Westwood's Yellow). 



Butterfly. — Pale yellow or orange-yellow, with a narrow 

 black border on the fore wings, beginning on the costa beyond 

 the middle, and not quite reaching the inner angle. On the 

 under side the wings are pale yellow, immaculate, or at the apex 

 of the fore wing and the outer angle of the hind wing broadly 

 marked with very pale reddish-brown. Expanse, 1.75-2.00 inches. 



Early Stages. — Unknown. 



Westwood's Yellow occurs in Texas and Arizona, but is not 

 common. It is abundant farther south. 



(7) Terias lisa, Boisduval and Leconte, Plate XXXVII, Fig. 

 13, 3 ; Plate II, Fig. 3, larva; Plate V, Fig. 56, chrysalis (The 

 Little Sulphur). * 



Butterfly. — Allied to the three following species, from which 

 it may at once be distinguished by the absence of the black bar 

 on the inner margin of the fore wings and by the profusely 

 mottled surface of the under side of the hind wings. It is subject 

 to considerable variation, albino females and melanic males being 

 sometimes found, as well as dwarfed specimens of very small 

 size. Expanse, i. 25-1. 60 inch. 



Early Stages. — These have not been thoroughly studied and 

 described, in spite of the fact that the insect is very common in 

 many easily accessible localities. The caterpillar feeds on Cassia 

 and on clover. 



T. lisa ranges from New England south and west as for as the 

 foot-hills of the Rocky Mountains, and into Mexico and Honduras. 

 It is found in the Antilles and Bermuda. An interesting account 

 of the appearance of a vast swarm of these butterflies in the 

 Bermudas is given by Jones in " Psyche," vol. i, p. 121 : 



"Early in the morning of the first day of October last year 

 (1874), several persons living on the north side of the main isl- 

 and perceived, as they thought, a cloud coming over from the 

 northwest, which drew nearer and nearer to the shore, on reach- 



297 



