86 PEOCEEDTNG 8 OF THE NATIONAL MUSEUM. volxxi. 



The ordinary spots are fairly well defined. The orbicular is small, a 

 little irregular, sometimes oval, quite usually complete. The reuiform 

 is of moderate size, usually indeflned outwardly. The two spots are 

 connected inferiorly by a black line. Secondaries smoky white in the 

 male, darker in the female. Beneath whitish, more or less powdered, 

 with the usual outer line and discal spot. 



Expanse, 1.50 to 1.80 inches (37 to 45 mm.). 



Habitat. — Canada to Florida, west to Colorado; Kittery Point, Maine, 

 in August; Carbondale, Illinois, in May; Union County, New Jersey, 

 in July; Washington, District of Columbia, in August. 



This is another common species with all the essential markings of 

 loh(diae. It is much darker, however, distinctly smaller in size, and 

 without the peculiar yellowish tinge. On the whole, the black mark 

 ings are not so prominent as in the preceding species, but it is dififlcult 

 to point out distinctive characters other than such as have alriBady been 

 noted. With a good series of specimens at hand there is rarely a 

 doubt as to tlie species; but occasionally an intermediate example may 

 be troublesome, unless reference is had of the male sexual characters. 

 The head structure is essentially as in loheUae. The leg is not quite so 

 heavily built, and its heaviest point on the femur is nearer to the 

 center. The tibial epiphysis is at about the middle and extends nearly 

 to the tip. The harpes are long and narrow and somewhat acutely 

 rounded at the tip. The clasper is ratber slender, the superior pro 

 cesses being very long and well curved. There is a finger like process 

 from the upper margin, and this character will always separate this 

 species from loheUae. Between thirty and forty specimens have been 

 under examination. 



LARVA. 



French, Can. Ent., 1886, XVIII, p. 118 {loheUae). 

 » 

 JEgg. — Round, very flat, the well-marked vertical grooves becoming 



obscure at the apex and less numerous. Transverse striae scarcely 



indicated. A slight rim at the base, where the ^^g is applied to the 



leaf Colorless, whitish, not entirely transparent; diameter, 1 mm.; 



height, about 0.25 mm. 



Stage I. — Translucent white, without marks. Head higher than 

 wide, mouth pointed; width, 0.3 mm. Setae single, normal, long, 

 curved, I and II dark, the rest pale and finer, subprimaries absent. 



Stage II. — Head squarer than before, with i^ointed lobes, colorless; 

 eye black; width, 0.5 mm. Body colorless, except for the food showing 

 by transparency; a little opaquely whitish. Warts large, concolorous, 

 each bearing a crown of short, iiale setae besides the central dark one. 

 Subventral setae all pale; IV small, situated on the white tracheal 

 line, VI distinct, elongated longitudinally. A few setae on the leg 

 plates. Later the bod^^ becomes pale green, with a broken white sub- 

 dorsal line along tubercles II. 



Stage 111. — Head, about 1 mm. Body higher than wide, all pale 



