AMERICAN HYMENOPTERA. Zb i 



occiput; inner tooth of mandibles retracted, no irregularities below; 

 tips of mandibles red; body wholly black; legs black, the two ante- 

 rior pair dull white below the knee joints, with fuscous tarsi; the mid- 

 dle tibiae are sometimes black on the upper side, and the posterior tibiae 

 whitish at base and tip, remainder with the tarsi blackish; claws with 

 a moderately large inner tooth near the base. Wings tinged with 

 blackish violaceous, darkest toward the base ; under wings sometimes 

 hyaline ; marginal cross nervure straight and received in middle of 

 third submarginal cell. 



Northern States. 



Larfse 22-footed, slug-like, not slimy, not enlarged toward the head, 

 although they have the power of retracting the head partly within or 

 beneath the following segments. Color pale green, beneath yellowish; 

 liead yellowish, with a black dot or "triple-pointed wart" on each side. 

 To the eye it appears soft and velvety, but free from hairs. It has 

 two broods, coming forth in June and August, and feeds on the leaves 

 of the rose, on the epidemis of the upper side of the leaf, not eating 

 the vines or the under skin. There are seldom more than two or three 

 on a leaf. Their transformations are much like those of >S'. cerasi. 

 When disturbed the imagos often sluggishly drop from the leaf of the 

 bush upon the ground. They are most active in the morning and 

 evening. When the larva is mature it passes into the ground and 

 forms an oval cell below the surface, smoothed within and cemented 

 by gummy silk. The second brood is not so numerous as the first. 



This is the most destructive insect of this genus, as it infests the 

 rose bushes, and in their most beautiful season, cau.ses the rose leaves 

 of whole gardens to look as if burned by fire. And as the life of the 

 leaf is not wholly destroyed, the effect is perceived for a long time af- 

 ter the damage is done. It continues to remain for years about the 

 same locality. 



2.3. Selandria ignotus, n. sp. 



Blaok, with the tegulse, collar, the four anterior tibise and base of posterior 

 tibiae white. Length 0.20. Br. wings 0.44 inch. 



$. Body stout, shining; antennae as in S. rosse ; head below the 

 occiput *dull, with close punctures; uasus irregularly notched; tegulae, 

 edge of collar, all the knee joints, the four anterior tibiae, base of pos- 

 terior tibia) and of 1st joint of tarsi whitish, remainder of legs black; 

 tarsi obscure; inner tooth of ckws minute, below the middle; win<>s 

 slightly clouded, dividing marginal nervure received between middle 

 and apex of third submarginal ; second recurrent nervure received be- 

 tween middle and base of the same cell ; base of first submarginal not 



TRANS. AMER. ENT. SOC. (33) SEPTEMBER, 1867. 



