784 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



other. A broad lateral flesh- colored band containing the large black conspicuous 

 spiracles, four to five broken black lines, the uppermost black lines being heaviest. 



Beneath greenish yellow, vrith six brovrn hair lines. Supra-anal plate broad, trian- 

 gular, apex pointed, but somewhat obtuse. 



Length, 30'"'". 



Piijja.— Head and thorax very pale green, spotted with scattered black spots. 

 Abdomen white, with a yellowish tint, especially at the sutures. Body rather stout, 

 apex of the abdomen produced into a pair of large long spines, with three pairs of 

 smaller ones curved at the end. 



Moth. — It is easily recognized by its large size and plumose male antennae, the snow- 

 white thin semi-transparent wings, with a black narrow zigzag line on the inner 

 third of the wing, often obsolete. A distinct discal spot. A scalloped black line 

 half way between the discal dot and the outer edge. Expanse of wings, 1.10 to 1.80 



inches. 



110. Geometrid caterpillar. 



In some of the caterpillars the head is a little reddish on the sides, 

 but the distinct white stripes indicate that it is a diflfereut species from 

 Semiothisa hisignata, and the legs are green. It is common on the 

 pitch pine in Providence in September and October. October 4 it began 

 to pupate, not cocooning. Undoubtedly the chrysalids enter the 

 ground. 



Larva. — Head as wide as the prothoracic segment, but not so wide as the body ; 

 head moderately full and rounded, but not so much so aa usual. Body rather slen- 

 der, tapering very slightly towards the head, and rather more so towards the end. 

 Head and body green, exact color of the needles of the pine, with white stripes of the 

 same tint (glaucous white) as the white in the hollow of the three-cornered leaves. 

 Two parallel straight rather broad lines on the front of the head are continuations of 

 two much broader dorsal median white longitudinal bands, separated by a thread- 

 like median green stripe. These two white bands are whiter on the sides than 

 within. The lateral ridge is twisted with white, forming a lateral white line. The 

 two dorsal white lines are continued upon the supra-anal plate which is not acutely 

 triangular; the two spines of the anal legs are rather prominent. Thoracic and ab- 

 dominal legs green, like the rest of the body. Length 23™™. 



111. Geometrid CATERPILLAR. 



This harlequin geometrid larva is found on the pitch pine, July 25 to 

 August 2, in Brunswick, Me. 



Larva. — Body thick, of uniform width, slightly flattened. Head not so wide as the 

 body. Head reddish, smooth, deeply bilobed on the vertex, each lobe boss-like, red- 

 dish and shiny. Body and head reddish brown, of the general color of the red sheath 

 of the needle, curiously checkered. On the hinder edge of each segment a small 

 prominent tubercle, each connected by a transverse pale line. A lateral tubercle low 

 down on each side, in fro'^*^ of each of which is a bent whitish line, forming an inter- 

 rupted lateral band. Above, behind each pair of tubercles is a large, dull, dusky, 

 smoky, square patch, each patch alternating with a similar pale-brown area. The 

 body besides is marbled and variously marked with brown and pale and darker 

 points. The segments beneath have a transverse tuberculated ridge, and the cater- 

 pillar altogether is a very singular and unusual form. Length 25™™. 



11'2. Geometrid Caterpillar. 



Larva. — Mimics a dark old twig. Head as wide as the body, which is moderately 

 thick, rounded but slightly tuberculated, somewhat as in Caripeta. No dorsal tuber- 

 cles, the four minute inconspicuous dorsal warts are situated in a trapezoid, the two 



