838 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



to the protlioracic segment, and slightly tinged with ferruginous. In this band, on 

 the side of each segment, is a pale-whitish, flattened wart, directly in front of and 

 adjoining the spiracle; along the narrow, lateral, fleshy ridge on each segment is a 

 long, narrow, pale-yellowish wart. Beneath dull, livid greenish, with (on each seg- 

 ment) a transverse row of four bright-yellowish warts, concolorous with those above ; 

 the two inner ones are minute, the outer ones much larger. Thoracic legs black- 

 brown ; the four pairs of abdominal median legs are pale, almost whitish ; all the 

 hairs are flne and light-brown in color, and one-half as long as the body is broad. 

 Length 19"'™. 



Pupa. — Body very thick, the thorax especially unusually swollen; the body, soon 

 after changing, pale horn-colored, striped with brown ; antenna) and legs dark horn- 

 color or dull tan-brown ; wings pale, with the veins dark ; the thorax pale horn, 

 spotted with dark tan-brown, with three irregular, dark, dorsal stripes ; meso-scutel- 

 lum and metanotum dark ; abdominal segments above, with two rows of stout spines ; 

 a lateral row of dark spots, and a median spot on the two basal segments ; similar 

 spots on the succeeding segments lengthened and connecting the lateral spots. Be- 

 neath are two irregular rows of diffuse spots ; the hinder edge of the segments dark- 

 ened; the terminal segment uniform dark, shining, tan-brown, ending in a long, stout 

 jjoint, 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™™. 



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 unequal, 

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

 verse 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 wanting) 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 diff"er 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, body, and hind wings glistening umber-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 10™™ ; of fore wing, 10 to 12™™ ; expanse of wings, 19 to 22™™. 



ir>. The spruce nematus. 



Nematus integer Say. 



Order Hymenoptera ; family Tenthredinid^. 



(Plate XXVII, figs. 6, 6a, 6b, 6c.) 



Although this insect is not, so far as known, especially destructive to 

 evergreen trees, yet it is common over the Northern States and may at 

 times prove obnoxious. It occurs on the spruce in Maine in the latter 



