62 



freckled, pale behind, tinged with green in. front and with a few- 

 long hairs. Joint 1 also freckled and with a large black pilifer- 

 ous tubercle with a pale basal annulation and in range with mid- 

 dle of dark stripe. Joint 2 with similar black tubercles with a 

 white center and replacing the uppermost lateral pale spot. There- 

 are but two of the small pale dorsal piliferous spots on this joint, 

 (between the tubercles), as well as on joint 3. Beneath immacu- 

 late, except that the thoracic legs have sometimes a few dusky- 

 dots. 



''In the very dark specimens the head, cervical shield, and anal 

 plate remain pale. The cervical shield is then well defined with 

 four small piliferous specks at anterior edge, and the large shiny 

 tubercle forms the extreme anterior angle. 



''In many specimens the subdorsal dark stripe is obsolete or sub- 

 obsolete, but even then the four black tubercles on joints 1 and 2 

 characterize the larva sufficiently. 



"Described from numerous specimens. 



"Pitpa. — 0.24 inch long; rather stout and short, with two minute 

 diverging spines and a few stiff bristles at tip. 



"Imago. — Average expanse 0.48 inch. Front wings glossy pur- 

 plish brown with two silvery gray transverse bands dividing the- 

 wing on costa in about three equal parts, the basal band sharply 

 defined outwardly and always extending to inner margin, the pos- 

 terior band never extending more than half way across the wing, 

 and generally not more than one third, ill defined. In some 

 specimens the basal transverse band is quite narrow, with the 

 basal space a shade paler than the median: in others the band 

 forms a double line. In some specimens, also, a narrow pale 

 transverse line outside the second band, and a pale terminal shade^ 

 are visible. Hind wings uniformly paler gray. Under surface 

 glossy gray, with no marks, the front wings a shade darker than 

 the hind. The male differs from the female in the basal portion 

 of the antennae being curved, and the curve filled with a tuft of 

 scales. 



"Described from numerous bred specimens." 



DISTRIBUTION. 



It is probable that when left to its own resources this insect 

 would spread very slowly; but there is great danger of its being 

 carried from place to place through the agency of man. Especially 

 is it liable to be introduced with trees from the nursery, unless 

 they are thoroughly stripped before being sent out, and no dead 

 leaves allowed to cling about the roots or get into the packing 

 boxes. A case in point is that of a fruit grower in Sangamon 

 county, Illinois, who purchased trees from nurseries infested by 

 the species and was afterwards greatly troubled by their presence. 

 So far as can be learned the insect had not before been observed 

 in the locality in questiun. 



