ORTHOPTEEA of INDIANA. l857 



two or three oblique blackish bars; a pale ring near the knee. Hind 

 tibiae dusky, the spines black. 



This species differs from sulphurea by having the disk of the vertex 

 truncate in front, its lateral carinae not meeting, but continuous with 

 the frontal costa; the latter with the sides not converging to an 

 acuminate apex. The median carina of pronotum is higher and more 

 distinctly arched and the posterior margin of pronotum is more acute. 

 It is usually larger than sulphurea. 



Measurements: Length of body, male 27 nmi., female 34 mm.; of 

 antennae, male and female, 10.5; of tegmiua, male, 26 mm., female, 

 30 mm.; of hind femora, male, 18 mm., female, 19 mm. 



This is also a common locust throughout Indiana, beginning to 

 reach maturity in the central part of the State, from eggs hatched in 

 the spring, about July 20th, and existing until November 1st, or 

 later. It frequents the stubble of wheat, clover and timothy fields, 

 the banks along railways and the borders of high, dry, open wood- 

 lands and roadsides. One-third or more of the males have the inner 

 wings a deep orange yellow, but not more than one-sixth of the 

 females have the wings so colored. The orange winged males are 

 usually darker in color, and their stridulation is seemingly louder and 

 more prolonged than in the yellow winged forms. The sound is made 

 as the insect rises from the ground, and at times at the points of 

 turning in its zigzag flight. Xanthoptera is a stronger and more active 

 flier than sulphurea and its note is louder and readily distinguished 

 from that of the latter. 



XXVI. CnoRTOPHAGA Saussure (1884). 



Body rather slim, compressed, jjunetate or fine wrinkled, green or 

 brown in color. Vertex horizontal, triangular; the apex truncate; the 

 lateral carinae not prominent, the median carina wanting; the 

 foveolse very shallow, elongate, triangular. Frontal eosta prominent, 

 rather narrow, punctate, suleate below the ocellus, the margins of 

 upper fourth slightly converging to meet those of the vertex. An- 

 tennae no longer than head and pronotum together, the joints short 

 and somewhat flattened. Pronotum with its disk roof shaped, its 

 front margin bluntly angulate, projected slightly forward on the 

 occiput, the hind margin acute angled; the median carina not promi- 

 nent, straight and but faintly notched a little before the middle by 

 the principal sulcus; the lateral carinse visible only on the metazona, 

 rounded and indistinct in the female, plainly visible in the male. 

 Lateral lobes of the pronotum as in Arphia, the posterior angle less 



