32-i REPORT OF STATE GEOLOGIST. 



with them. It is probably, therefore, more numerous than my ob- 

 servations would denote, and is to be looked for throughout the State, 

 its general range covering "the northern half of the United State3 

 and bordering parts of Canada." 



73. Melanoplus luridus (Dodge). 



Caloptenm Inr'idm Dodge, 4 5, VIII, 1876, 11 ; Riley, \ 22, II, 1S84, 195. 



McUinopln.^ luridus Bnin., 2 16, III, 1883, 60; Id., 22, I, 1885, 138; 

 Scudd., 17 9, XXXVI, 1897, 29, 35; Id., 18 1, 1897, 137, 344, 

 Plate XXin, Fig. 7; Id. 188, 1900, 61; Lugg.. 84, 1898, 203, 

 Figs. 128, 129. 



Mdanoplm collinnx Scudd., 163, XIX, 1878, 285; Id., 16 1, VI, 1878, 

 44; Id., 179, XXXVI, 1897, 28, 35; Id., 181, 1897, 138, 346, 

 Plate XXIII, Fig. 6; Id., 188, 1900, 56; Fern., 5 3, 1888, 31; 

 *B1., 4, XXin, 1891, 99; Id., 1 1, XXVI, 1894, 244; McN., 88, 

 VI, 1891, 74; Beut., 3, VI, 1894, 306; Morse, 100, YIH, 1898^ 

 256, 259, 294, Plate.7, Fig. 43. 



Size, medinni. Vertex somewhat swollen, distinctly elevated above 

 the pronotum; the interspace between the eyes slightly wider than 

 (male) or fully half as wide again (female) as the first antennal joint; 

 the front half moderately sloping, shallowly and broadly sulcate in 

 the male, plane in the female. Frontal costa of nearly equal width 

 throughout, faintly sulcate at and below the ocellus in the male. An- 

 tenn83 about three-fourths (male) or two-thirds (female) as long as 

 the hind femora. Pronotum feebly and regularly widening on pos- 

 terior half; the disk flat or nearly so; the median carina distinct only 

 on the metazona; the hind margin feebly obtuse angulate, the angle 

 rounded; the prozona one-third (male) or but slightly (female) longer 

 than the distinctly punctate metazona. Tegmina reaching tips of 

 hind femora in the male, often a little shorter in the female, moder- 

 ately broad, distinctly tapering. Extremity of male abdomen but 

 little recurved; the basal half of cerci gently tapering, about twice 

 as long as the greatest breadth; the apical half distinctly forked, the 

 lower branch a little shorter and much narrower than the upper. 

 Furcula consisting of a pair of well separated minute triangular 

 denticulations. Sub-genital plate as broad as long, the apex broadly 

 rounded. (See Fig. 15, Plate II.) 



Color: Dark grayish brown varied with fuscous. Face dull bluish 

 gray, with mottlings of brownish ])ui|)le. Occiput and disk of pro- 

 zona fuscous. A broad blackish bar extiMids from eye back along the 

 upper half of lateral lobe of ])rozona; this often sub-obsolete, espe- 

 cially in the female. 'I'egmina brownish fuscous, often grayish in 

 the feniah'. with usually a row of fuscous spots along the discoidal 

 area; though sometimes immaculate. Hind femora brownish yellow, 



