Genus Debis 



margin of the fore wing is either rounded or slightly excavated. 

 The palpi are long and narrow, thickly clothed with hairs below; 

 the antennae are moderately long, gradually 

 thickening toward the tip, without a well- 

 marked club ; the fore legs in both sexes greatly 

 atrophied. 



Egg. Flattened spheroidal, broadly trun- 

 cated at the base, the surface smooth. 



Caterpillar. Body long, slender, tapering 

 from the middle; the head cleft, each half being 

 produced upward as a conical horn; the anal 

 segment provided with a pair of horns similar 

 to those of the head, produced longitudinally FIG. 114. Neura- 



hsrkwnrrl tion of the genus D^is. 



backward. (After Scudder } 



Chrysalis. Strongly convex dorsally, con- 

 cave ventrally, with a stout tubercular eminence on the thorax, 

 without any other projecting tubercles or eminences; light green 

 in color. 



This genus is large, and is well represented in Asia and the 

 Indo-Malayan region. I cannot see any good ground for gener- 

 ically separating the two species found in North America from their 

 congeners of Asiatic countries, as has been done by some writers. 



(1) Debis portlandia, Plate XVIII, Fig. 20, $ ; Plate III, Fig. 

 1 6, larva; Plate IV, Fig. 6, chrysalis (The Pearly Eye). 



Butterfly. The butterfly, the male of which is well depicted 

 as to its upper side on the plate, does not differ greatly in the 

 sexes. The hind wings on the under side are marked with a 

 series of beautiful ocelli. In the North the insect is single- 

 brooded ; in the region of West Virginia and southward it is 

 double-brooded. Expanse, 1.75-2.00 inches. 



Early Stages. The illustrations give a good idea of the ma- 

 ture larva and the chrysalis. The caterpillar, like most of the 

 Satyrince, feeds upon grasses. 



The range of this pretty insect is extensive, it being found 

 from Maine to the Gulf of Mexico, and westward to the Rocky 

 Mountains. 



(2) Debis creola, Skinner, Plate XVIII, Fig. 18, $ ; Fig. 19, 

 ? (The Creole). 



Butterfly. Easily distinguished from the preceding species by 

 the elongated patches of dark raised scales upon the fore wings, 



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