SPRUCE BUDWORM. 23 



dark; abdominal segments above, with two rows of stout spines; a lat- 

 eral row of dark spots, and a medium spot on the two basal segments; 

 similar spots on the succeeding segments lengthened and connecting the 

 lateral spots. Beneath are two irregular rows of diffuse spots ; the 

 hinder edge of the segments darkened; the terminal segment uniform 

 dark, -shining, tan-brown, ending in a long, stout point, on each side 

 of which are two tightly-curled spines, and two stouter but less curled 

 larger ones at the end, arising from a common base. Length 12 mm. 



"Moth. A large species, with a stout body and large broad, oblong 

 fore wings ; the costa not excavated towards the apex, but full and 

 regularly though slightly curved, the apex being rectangular, head and 

 body umber-brown. Palpi very stout ; terminal joint short ; fore wings 

 umber-brown, the brown sometimes replaced by rust-red ; ground-color 

 bluish-slate; on the inner fourth of the costal edge are four imequal, 

 triangular, brown spots, the second and fourth connecting with an elon- 

 gated transverse brown patch in the middle of the wing. From a point 

 at or just within the middle of the costa a very oblique, distinct, broad, 

 brown band crosses the wing in a zigzag course, ending at or near the 

 outer third of the internal edge of the wing. This broad band extends 

 out towards or connects with a preapical brown patch on the costa ; it 

 also sends an angle inwards behind the median vein, and again another 

 angle outward opposite the inwardly-directed angle. There are often two 

 distinct, costal, whitish dots (sometimes wantn.g") just before the apex, 

 while the apex itself is brown. There is also a large brown patch in 

 the middle of the wings near the outer edge. There are numerous fine, 

 short, transverse, brown lines dividing the wing into squares or checks, 

 bordered with brown. The bands and short lines are more or less 

 confluent or separate, varying much in this respect. Some females dif- 

 fer in the umber-brown, being bright rust-red, and the clay-blue pale 

 ferruginous brown, while the broad, median, zigzag band is umber- 

 brown on the edges and bright rust-red in the middle, and the wing is 

 covered with an irregular net-work made by the .short transverse and 

 longitudinal dark-brown lines inclosing rust-red or smoky-red patches. 



"Legs, bod_v, and hind wings glistening unber-brown ; tarsi ringed 

 with pale brown. The abdomen of the female is very stout, that of the 

 male ending in a long, distinct, hairy tuft. Described from perfectly 

 fresh specimens, five males, eight females. Length of body, 9 to lo 

 mm.; of fore w^ing, 10 to 12 mm.; expanse of wings 19 to 22 mm." 



