ORTHOPTERA. 139 



with the call of "katy-did, she-did," tho livo-long night. Of 

 this insect I have met with no scientific description except my 

 own, which was published in 1831 in the eighth volume of the 

 "Encyclopaedia Americana," page 42. It is the Flati/p/iy/luiu* 

 concavnm,f and measures, from the head to the end of the wing- 

 covers, rather more than one inch and a half, the body alone 

 being one inch in length. The piercer is broad, laterally com- 

 pressed, and curved like a cimctor ; and there are, in both sexes, 

 two little thorn-like projections from the middle of the breast 

 between the fore legs. The katy-did is found in the perfect 

 state during the months of September and October, at which 

 time the female lays her eggs. These are slate-colored, and 

 are rather more than one eighth of an inch in length. They 

 resemble tiny oval bivalve shells in shape. The insect lays 

 them in two contiguous rows along the surface of a twig, the 

 bark of which is previously shaved off 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 gummy 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, differing 

 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 gi'cen and opake, and is 

 traversed by a strong curved vein ; that of the right wing-cover 

 is semi-transparent in the middle. This insect is the Phyllo- 

 ptera ohlongifolia^X or oblong leaf-winged grasshopper. Its 



* Platyphyllum means broad-wing, 

 t Can this be the Locusta perspicillata of Fabricius ? 



X Locusta ohhngifoUa of De Geer, a different species from the laurifolia of 

 Linnteus, -with which it has been confounded by many naturalists. 



