LARCH WORMS. 901 



Larva. — Head rounded, as wide as the body, marbled with brown, elongated, mostly 

 crosswise dots. Body smooth, moderately thick, of the same color. Body dull 

 lilac gray, with darker irregular bands and spots. The most conspicuous and dis- 

 tinctive markings are a series of long, dark, diverging (posteriorly) lines (a pair on 

 each segment), forming a blackish V, of which there are about eight. Segments with 

 one crease; a little convex, but with no tubercles or warts. Length, 15™™. 



23. TORTRICID CATERPILLAR. 



This and the following species were beaten from the leaves of the 



hackmatack, at Brunswick, Me., June 23 to 26. 



Larva. — Body tapering towards both ends ; somewhat flattened : head rather small, 

 not so wide as the prothoracic segment. Head and cervical shield amber-brown, and 

 the thoracic feet of nearly the same color, but rather darker. Body horn-colored, 

 with a slight reddish tinge. Prothoracic shield much narrower than the succeeding 

 segment. Piliferous warts dark, conspicuous; the trapezoid in which the dorsal ones 

 are arranged forms an almost oblong square ; the fine hairs are very short, about one- 

 fourth as long as the body. Two rows of lateral warts. Supra-anal plate rounded, 

 concolorous with the head. Beneath a little paler, with a greenish tint. Length, 6™™. 



24. TORTRICID CATERPILLAR. 



Order Lepidoptera; family Tortricid^. 

 Zarra.— Body slender, of uniform width, suddenly tapering towards the end. Head 

 as broad as the body, black ; prothoracic shield black, as broad as the body, which 

 is somewhat flattened, more so than usual ; color livid greenish, whitish ; segments 

 somewhat wrinkled, piliferous, rather large, full, whitish ; concolorous with the 

 body ; hairs one-third to one-half as long as the body. First pair of thoracic feet 

 black, the others concolorous with the rest of the body and the abdominal legs; the 

 last segments paler and concolorous with the body beneath. Length, 7™™. 



25. The larch sack-bearer. 

 Coleophora laricella Hiibner. 



Dr. Hagen notices the occurrence of this European Tineid on the 

 European larch at Northampton, Mass. " In April they showed to a 

 large extent pale needles and many little larvse of the well-known sac- 

 bearing form. In May numerous slate-colored moths appeared." (Can. 

 Ent., 1889, p. 125.) 



26. Selandria^ sp. 



Order Lepidoptera; family Tenthredinid^. 



This worm is common on the hackmatack through June, July, and 

 August in Maine, but is not gregarious. 



Larva. — Three pairs of thoracic legs, seven abdominal pairs. Head small, pale 

 horn-red ; eyes black, not so wide as the body, which is considerably swollen on the 

 second and third thoracic segments, much as in Selandria cerasi; body behind rather 

 long and slender, tapering gradually to the end ; pale delicate green, with five or six 

 flattened folds crossing each segment. Two faint dark green narrow dorsal ones on 

 each side of the heart or middle of the body ; a dark green prominent lateral supra- 

 stigmatal line; the main trachea makes a silvery lateral line. Thoracic feet green- 

 ish horn-yellow at tips; abdominal feet pale green, exactly concolorous with the 

 body. Length, 11 to 12""». 



