Cinquième rapport de la Commission entomologique des États-Unis, sous la forme d'une édition révisée et élargie du Bulletin n° 7, sur les insectes nuisibles aux arbres forestiers et ombragés . tes, mais arciformes devant, garrot droit le bord d'obstacle. Il diffère de la larve de Saperda vestita Dire dans le corps plus court, qui est plus large, plus coiffure, avec la pointe de l'abdomen plus plate et plus de cheveux. Le prothoracicsegment est plus large et plus plat, et la partie rugueuse des plaques dorsales est le largerand moins transversément ovate. La structure de la tête montre que sa distinction générique de Saperda, à l'origine insisté sur b

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Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . tes, but arcuate in front, withthe hinder edge straight. It differs from the larva of Saperda vestita Say in the shorter body, which is broader, more hairy, with the tip of the abdomen flatter and more hairy. The prothoracicsegment is broader and flatter, and the rough portion of the dorsal plates is largerand less transversely ovate. The structure of the head shows that its generic dis-tinctness from Saperda, originally insisted on by Mulsant, may be well founded, asthe head is smaller and flatter, the clypeus being twice as large, and the labrum broadand short, while in Saperda vestita it is longer than broad. The mandibles are muchlonger and slenderer, and the anteun;e are much smaller than in Saperda vestita. Beetle.—A rather flat-bodied, dark-brown beetle, with a rusty-red curved line be-hind the eyes, two stripes on the thorax, and with a long red stripe on the outeredge of each wing-cover, with three long points projecting inwards; 0.50 inch inlength. 2. Thk ued-edged saperda.. Fig. 71. Larva (fioin life) and adultof the plm-tree borer.—FromPackard. Sajierda lateralis Fabric)us. Order Coleoptera ; family Ckrambycid.e. Mining the inner bark of dead trees and logs of the common elm, a grub very sim-ilar to the foregoing, and about the 1st of June producing a similar beetle, but differ-ing in wanting the transverse teeth or points arising from the marginal stripe on the wing-covers. (Fitch.) 3. Saperda vestita. Found ou the elm. This borer is destroyed by the larva o( Br aeoncharus Eiley, a specimen of which was taken from a larva found on theabove-named tree. (Rileys unpublished notes.) See linden insects. ELM BOKEKS. 227 4. The six-eaxded dryobius.Dryohius sex-fasciatus Say.Order Coleoptera; family Cerambycid^. A similar but larger grub thau that of Saperda tridentata, but found with it, pro-duciu

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