898 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



12. Geometrid larva. 



A large Geometrid was found on the hackmatack at Brunswick, 

 August 30, which died in the breeding box. 



Larva. — Body large and thick cylindrical, marked exactly like a larch twig. Head 

 rather small, | as wide as the body, flattened, horizontal in position. Prothoracic 

 segment a little wider than the head, smooth, not enlarged, but meso-segment ia 

 swollen in front,and especially on the sides,into a large rough lateral tubercle, which 

 is warted, between the lateral tubercles is a transverse row of black warts. On the 

 hinder end of each segment is a transverse ridge, ending on each side in a small wart. 

 These ridges become larger toward the end of the body, especially the sixth abdomi- 

 nal segment, on the succeeding segments the ridge is wanting, the lateral warts re- 

 maining. The large anal plate is not regularly triangular, butends in four tubercles 

 with two on top ; the anal legs are not very wide, but the dorsal spines are very large, 

 acute,and prominent. The sides of the legs are warted. The body is stone-gray, vari- 

 ably marbled and mottled with black and white or pale gray, so as to closely resemble 

 a light larch twig. The sides of the pro- and meso-rings are white ; above on meso- is 

 a short double white line ; the folds of the lateral ridges are marked with black, and 

 there is a median black dorsal line extending from the third from the end to the end of 

 the supra-anal plate. Under side gray, as above. Length 45""" ; thickness of body 5'""'. 



13. Eupithecia sp. 



This larva was taken from a hackmatack June 25. 



Larva. — Much like the larva of E. palpata, but not so much flattened. Head rather 

 full, as wide as the body ; rounded. Body pale pea-green, a little paler than the 

 leaves on which it feeds. Suture and lateral line washed with straw (faint) yellow. 

 Supra-anal plate broad, rounded, segments somewhat wrinkled transversely. Abdom- 

 inal legs concolorous with the body. Thoracic legs greenish amber ; hindermost pair 

 dark amber. A slender, delicate-colored species. Length 11™™. 



14. Eupithecia sp. 



Another larva of this genus, with the body more cylindrical, occurred 

 June 27 on the hackmatack. It also occurred June 23 on the spruce. 

 In the latter specimen the body is deeper yellow, with the markings a 

 little more distinct, but otherwise it agreed with the specimen described 

 below. 



Larva. — The body is more cylindrical, but the head is shaped as in the larva of E. 

 palpata. Head yellowish. Body of even width throughout, a little wider than head ; 

 surface finely but distinctly granulated ; a broad, continuous, medio-dorsal brick 

 red stripe ; a lateral narrow scalloped reddish-purple stripe. The space between the 

 dorsal and the subdorsal lines more or less suffused with purplish red and the sur- 

 face sprinkled with yellow granulations. Body elsewhere yellow ; under side livid ; 

 on each side a narrow pink- red stripe extending down the sides of the two pairs of 

 abdominal legs. Supra-anal plate regularly triangular, scutellate ; beneath the apex 

 are two large piliferous conical warts. Anal legs as in E. palpata, broad and large. 

 Length 12™"'. 



15. Eupithecia sp. 



This larva occurred July 10 to 25 in Maine; pupating August 2. 

 Several also occurred on the fir August 5 to 7, and were common on 

 Pinus strobus. It begins to eat the ends of the leaves August 5. One 

 of them on the latter tree spun a slight cocoon August 14. As unfortu- 



