218 REPORT OF STATE GEOLOGIST. 



dd. Pi'onoturu with its median carina low, not arched; 



its front not produced forward. Upper notch or 



sinus on hind margin of lateral lobe of pronotum 



nearly as deep as the lower. . . .XIII. Tettix, p. 219 



cc. Front dorsal margin of pronotum tnancate and advanced 



upon the head to the eyes; facial ridges with their lower 



halves strongly forlced; front of vertex, when viewed 



from the side, distinctly rounded 



XIV. Neotettix, p. 22G 

 bb. Vertex of head not extending beyond front of eyes, usually 



narrower tlian one of thorn; its front usually truncate 



XV. Paratettix, p. 227 

 Off. Antenna3 with 21 or 22 joints; front femora distinctly and broadly 



grooved or sulcate above XVI. Tettigidea, p. 228 



XII. No]noTETTix Morse (1894). 



The members of this genus can be easily distinguished from the 

 other Tettigians hy the characters given in the key. The high arched 

 crest of the pronotum, and (in our species) its projection forward in 

 an angle over the back of the head, are especially notable. Between 

 the posterior portion of the eyes and the median line of the pronotum 

 a pair of nipple-like tubercles are usually present. The antennae are 

 short and filiform with 12, rarely 13, joints. The pronotum in most 

 specimens reaches only to end of abdomen, the inner wings then 

 being rudimentary. An occasional example of some of the species 

 is found in which the pronotum is prolonged and the wings well de- 

 veloped. These, according to Morse, are examples of a reversion to 

 the earlier long-winged type of females. Tlie hind femora are wider 

 and stouter proportionally than in the other genera. 



Seven nominal species of Nomotcttix have been described from 

 the United States. Of these, but one has, as yet, been taken in 

 Indiana. 



17. Nomotettix co^^PRESS^s Morse. The Crested Grouse Locust. 



NomoU'ttix coviprn^sun Morse, 96, III, 1895, 15; Scudd., 188, 1900, 15; 



Hanc, 69, 1902, 55, 58. 

 Bafrachidea crhtata Bl., 4, XXIII, 1891, 100 (not Harris). 

 Batrachidea carinala Bl., 6, XXIV, 1892, 33 (not Scudd.). 



Body small, compressed, granulate; grayish or fuscous brown in 

 color, the sides of pronotum often ornamented with one or two ir- 

 regular shaped velvety black or black and white spots. Vertex nearly 

 twice as wide as one of the eyes, a little higher than the eyes and ex- 

 tending in front of them, its front border sub-rounded. Pronotum 

 strongly compressed, its front dorsal margin advanced in an angle 

 over the bond to the posterior third of the eyes. Median carina of 



