ORTHOPTEEA OF INDIANA. 353 



and b}^ night, and Mdthout variation. The song consists of from two 

 to four notes — sounding like chic-a-chcc — repeated rapidly so as to 

 be almost confounded, and when three requiring just one-third of a 

 second; the song is repeated at will, generally once in about five 

 seconds, for an indefinite length of time." 



86. Amblycorypha uhleri Brunner. Uhler's Katydid. 



Amhlycorypha uhleri Braun. , 38, 1878, 267; Bl., 7, 1893, 106; Lugg., 

 84, 1898, 223; Scudd., 18 8, 1900, 70. 



Uhler's katydid is our smallest species of the genus, measuring but 

 about 27 mm. to end of tegmina. The posterior femora are armed as 

 in rotundifolia, and slightly exceed the tegmina in both sexes. Pro- 

 notum narrower in front, the anterior half of lateral carinaa rounded, 

 the posterior rather sharp; the hind margin of lateral lobes as in 

 rotundifolia. The male has longer wings and narrower tegmina than 

 the female. Ovipositor less curved than in either of the other spe- 

 cies, the apical half with comparatively strong serrations on both 

 margins. General color a light grass green. 



Measurements: Male — Length of body, 14 mm.; of tegmina, 23 

 mm.; of hind femora, 20 mm.; of Avings beyond tegmina, 5 mm. 

 Female — Length of body, 17.5 mm.; of tegmina, 22 mm.; of hind 

 femora, 23 mm.; of wings beyond tegmina. 3 mm.: of ovipositor. 

 8.5 mm. 



This species is much less common than either of the preceding, 

 having been taken only in Vigo County, where it frequents the tall 

 sedges and willows bordering the large ponds in the Wabash River 

 bottoms; and in Crawford County near Wyandotte Cave, where a 

 number were secured, on grass and herbs. The young feed upon the 

 leaves of the black and scarlet oaks, Quercus velutina Lam. and 

 Q. coccinea Wang, and the perfect insect is often found on or beneath 

 these trees. It has been recorded before from New Jersey, Mary- 

 land and the District of Columbia, and ranges southwest to Texas. 



XLIII. MiCROCENTRUM Scudder (1862). 



Size, large. Wing covers moderately expanded in the middle, much 

 longer than the posterior femora, and with the outer border sloping 

 off quite sharply, thus causing the tip to be more pointed than in 

 Amhlycorypha. Vertex much as in that genus, slightly furrowed. 

 Eyes broadly oval, very prominent. Hind legs slender and very 

 short, the femora but little more than half as long as the tegmina. 

 Anal plates of male not prolonged; the supra-anal bluntly rounded; 

 the sub-anal forked at the tip as in Amhlycorypha. Ovipositor very 



