THE OBLONG LEAF-WING. 159 



one eighth of an inch in length. They resemble tiny oval 

 bivalve shells in shape. The insect lays them in two con- 

 tiguous rows along the surface of a twig, the bark of which is 

 previously shaved oif or made rough with her piercer. Each 

 row consists of eight or nine eggs, placed somewhat obliquely, 

 and overlapping each other a little, and they are fastened to 

 the twig with a gumniy substance. In hatching, the egg splits 

 open at one end, and the young insect creeps through the cleft. 

 I am indebted to Miss Morris for specimens of these eggs. 



We have another broad-winged green grasshopper, differ- 

 ing from the katy-did, in having the wing-covers narrower, 

 flat and not concave, and shorter than the wings, the thorax 

 smooth, flat above, and abruptly bent downwards at a right 

 angle on each side, and the breast without any projecting 

 spines in the middle. The piercer has the same form as that 

 of the katy-did. The musical organ of the left wing-cover, 

 which is the uppermost, is not transparent, but is green 

 and opaque, and is traversed by a strong curved vein ; that 

 of the right wing-cover is semi-transparent in the middle. 

 This insect is the Phylhptera ohhngifolia* (Fig. 75,) or ob- 



Fig. 75. 



long leaf-winged grasshopper. Its body measures about an 

 inch in length, and from the head to the tips of the wings, 

 from an inch and three quarters to three inches. It is found 

 in its perfect state during the months of September and 

 October, upon trees, and, when it flies, makes a whizzing 

 noise somewhat . like that of a weaver's shuttle. The notes 



* Locusta oblongifolia of De Geer, a different species from the Idurifolia of Lin- 

 nseus. with which it has been confounded by many naturalists. 



