256 AMERICAN HYMENOPTERA. 



on tlie upper side of the leaves of the cherry (both wild and enltivatcd) 

 and the pear, eatinji,- only the epidermis, never eating through the leaf, 

 and leaving the veins and skeleton. Generally but two or three are 

 found upon a leaf, but when they are in great numbers there are some- 

 times twenty or thirty. In such cases when they are very numerous 

 a disagreeable odor s given forth. At times they have been very de- 

 structive to these fruit trees. Dr. Harris asserts and confirms these 

 statements, with additional remarks. Prof. Peck has illustrated his 

 remhrks by a series of careful drawings, which proves his insect to be 

 the same which is found here iiow. 



Prof. Winchell has also published some interesting observatious on 

 the same insect, which cannot here be copied for want of space. He 

 states that the incisions are sti-aight and not semicircular, are made and 

 the ova deposited on the upper side of the leaf, the ovipositor going 

 entirely through the leaf, and that the larva appears on the eighth or 

 ninth day. It was very abundant, and in some instances attacked not 

 i»nly the cherry and pear but the mountain ash and plum. 



21. S. fasciatus. 



Selandria fasciaius, Norton, Proc. Ent. Soc. Phil, iii, 1864, 9, 16, f . 

 Black; legs below the knees, except the hinder tibise, white, basal half of in- 

 ner wings blackish. Length 0.20. Br. wings 0.50 inch. 



9 . Color shining black, third joint of antenn.ie nearly as long as 

 fourth and fifth ; head polished, lower ocellus iu a heart-shaped basin ; 

 a sinus beneath, with another on each side; legs black, their tibite and 

 tarsi, except the tips of apical joints, pure white ; the apex of posterior 

 tibia? black ; inner claw tooth obtuse, of moderate size near the base; 

 wings ample, their basal half two-thirds blackish, their apical third 

 hyaline; marginal dividing nervure received at intersection of third 

 and fourth cells. 



S . The male has no inner under-wing cells. (Illinois). 



Massachusetts, Illinois. Two 9 , three %, . 



Tribe 3. Ilartig. 

 Under wings with one middle cell. 



22. S. rosae. 



Selandria rosa:, Harris' Cat. 1835, and Inj. Ins. -JH), 9 % ■ 

 Norton, Bost. Proc. viii, 223, 13. 

 Black; legs below the knees, in part, white, wings tinged with blackish vio- 

 laceous, darkest at base. Length 0.20. Br. wings 0.44 inch. 



$ % . liody stout, shining black ; antennjx; short, filiform, third 

 joint one-half longer than fourth, fourth longer than fifth, apical joint 

 shorter than the one preceding and more slender; channels on each 

 side of ocelli, wide, shallow, irregular, and not extending to edge of 



