554 The University Science Bulletin. 



Subcosta is so closely related to radius, at least distally, that it 

 only appears as a definite vein along the center of its course, where 

 it is widely separated from radius and thus forms an elongate, oval 

 cell. Radius has three branches, which are R^ and R, + 3 and R^ + .,. 

 Media is unbranched and is closely connected with cubitus, at least 

 at its base. Cubitus is two-branched. There are three anal veins 

 present, the first one of which is united with cubitus 2 on the 

 margin of the wing. 



In the hindwing the veins show up very plainly, being brown in 

 color and quite thick, while the cells of the wing are membranous. 

 Radius is two-branched, the branches being R^ + ^ and R^ + 5. Media 

 is unbranched and cubitus is two-branched. Three anal veins are 

 likewise present in this wing, the first one being closely connected 

 with cubitus basally, \\4iile the third one is branched. 



Part of the anterior margin of the posterior wing is produced into 

 a triangular projection whose outer margin bears from four to six 

 stout spines or hooks. Also on the ental surface of the tegmina 

 just in front of subcosta is a little elevated keel. According to 

 Hansen (1890) these hooks and keel are complementary structures 

 and contribute to the steadiness of the wings. 



THE LEGS. 



The three pairs of legs have a general similarity with respect to 

 position on the body, development, relative size, and number of 

 segments. When in action the front legs usually point forward and 

 the two last pairs point backward I pi. LV, fig. 1), but when at rest 

 they are drawn up under the sloping tegmina (pi. LV, fig. 4) so that 

 they are invisible from above. The hind pair is the longest and 

 the other two are about equal in length. All are well developed 

 as a result of their jumping habit. The number of segments is the 

 same in each, consisting of coxa, trochanter, femur, tibia and a 

 three-segmented tarsus. They are blackish brown in color, espe- 

 cially the proximal segments, but gradually grow lighter toward 

 the distal ones. All three pairs are covered by a fine pubescence. 



The coxa (pi. LVIII, fig. 3) of the front leg is stout and thick in 

 comparison with the other segments of the leg, but it is not as large 

 as the coxae of the other two pairs. It is smooth and about equal 

 in length and width. It is almost cylindrical in shape, although 

 its proximal end broadens out transversely and thus gives the effect 

 of a flattened plate. The two anterior coxse are separated from each 

 other bv the width of the beak, which fits down between them. 



