Grasshoppers of Kansas. 113 



Mestobregma plattei Th. 

 (E. plattei. Syn. Acrid. North America, U. S. Geol. Sur., p. 123. 



Somewhat like OE. encerata, but invariably larger. 



Head large; front of the occiput elevated; vertex broad, much de- 

 flected; median foveolae subquadrate, transverse in female, opening in 

 front, connecting with the sulcus of the frontal costa; frontal costa 

 of moderate width, sulcate throughout, expanding slightly at the ocellus. 

 Eyes slightly oblong, subglobose, prominent. Antennae slender, passing 

 the pronotum. Median carina distinct, not prominent on the posterior 

 lobe, slightly prominent on the anterior lobes, notched twice; middle 

 part very short; posterior incision about the middle of the pronotum; 

 front margin slightly angled, apical angle slightly obtuse, pointed. 

 Elytra and wings about as long as the body. 



Color (dried after immersion in alcohol). Clay color, varied with 

 brown and fuscous. Lower portion of the face, the cheeks, and lower 

 margin of the sides of the pronotum pale yellowish; two or three rows 

 of brown dots on the occiput; a broad stripe along the middle of the 

 pronotum brown. The male generally has two oblique brownish stripes 

 on the sides of the head and pronotum, the upper one embracing the 

 lower portion of the eye. Elytra with the upper half and apical third 

 sprinkled with small fuscous spots; lower half with two broad fuscous 

 bands, behind each a pale yellow immaculate space, appearing as oblong, 

 fuscous spots, alternating with pale spots. Wings pale transparent 

 yellow at the base (color when living unknown) ; a moderately broad 

 band crosses just beyond the middle, curving abruptly upon the posterior 

 margin to the anal angle; tip more or less clouded, rest pellucid; nervules 

 pale yellow (tip of male fuscous). Posterior femora with two or three 

 dim, oblique bands outside; inside blackish next the base; a pale ring 

 near the apex. 



Dimensions: Female — length, 1 in.; elytra, same; hind femora, .55 

 in.; hind tibiae, .5 in. Male — length, .75 in. 



Measurements in Millimeters. 



Body. Tegmina. Post, femora. 



Female 30.0-28.0 28.0-25.0 15.0-10.0 



Male 25.0-21.0 25.0-22.0 15.5-13.0 



(See fig. 72, page 80.) 



Trim,erotropis. 



As the original description of T rimer otropis is inaccessible to me, I 

 will give McNeill's (U. S. Nat. Mus., vol. 23, 394). 



"Trimerotropis may be briefly denned as follows: Head of moderate 

 size, slightly exceeding the prozone in width, but always exceeded 

 by the metazone, which is considerably expanded. Antennas filiform, 

 of variable length. Eyes rarely equal to the genal groove. Frontal 

 costa contracted below the ocellus and at the vertex. Sulcate always 

 below and sometimes above the ocellus. Scutellum of the vertex 

 never much shorter and generally longer than broad, usually plainly 

 sulcate, with or without a median carina. Central foveolae gener- 

 ally distinctly separated from the frontal costa and the scutellum of 

 the vertex. Lateral foveolae distinct and triangular. Pronotum with the 

 disk only moderately wrinkled on the prozone and quite smooth on the 

 metazone, except for granulations. Median carina cristate or rarely only 

 a raised line on the prozone, less elevated on the metazone, especially 

 posteriorly; cut by the principal much in advance of the middle, half to 

 more than twice as long as the prozone, and by the first sulcus behind 

 the middle of the prozone. Shoulders well marked, but lateral carinas 

 usually absent except occasionally on the front of metazone and prozone. 



8— Insect K. U. 



