SUBFAMILY I. TRYXALIN.E. 237 



Brunei- (181)0, <>3), Ayciicotettix occidentalis Bruner (1904, 58) 

 and -I. HK'iioKi/x Hancock (lOOGa, 255) shows that they are only 

 forms of dcum in, which were separated mainly on the widely var- 

 iable characters of wing length, color, number of spines on hind 

 tilme and degree of the apical angle of fastigium. 

 102. AGENEOTETTIX DEOEUM (Scudder), 1876a, 262. Sand Locust, 



Short, rather stout species, the male moderately the smaller. Gen- 

 eral color dull brown above, yellowish-white below; tegmina brown or 

 grayish-brown, usually with numerous small darker brown, quadrate 

 spots, these sometimes almost confined to a median row; many specimens 

 with a dull yellowish band reaching from vertex backward across the mid- 

 dle of occiput and pronotum to tip:; of tegmina; sides of head usually with 

 an indistinct blackish bar extending from eye back across the upper half 

 of pronotal lateral lobes; metazona with a more or less distinct elongate 

 triangular black spot each side; hind femora dull reddish-brown with 

 three blackish crossbars on upper outer face; hind tibiae bright coral red 

 with a whitish basal ring, their knees deep black. Fastigium often more 

 or less acute-angled, male, obtuse -angled, female. Length of body, $ , 

 10.515, 9, 1522; of antenna?, $, 8.5 10, 5, 77.5; of tegmina, $, 

 711, 9, 914; of hind femora, $, 810.5, 9, 9.512.5 mm. (Fig. 88.) 



Vigo Co., Ind., July Oct. (W. 8. B.) \ Chicago, 111., July- 

 Aug. (Hancock}; Lincoln, Neb., Sept. (Bruner} . This small, 

 dull colored locust has been taken in Indiana only from the sandy 

 bed of the old Wabash and Erie Canal, five miles north of Terre 



Haute, Tigo County. Here it was first 

 found on July <>, 1802, and afterward in 

 September and October, 1803. On one 

 side of the canal, at the point mentioned, 

 Fig. 88. Male, x i-s- W{ls ' } Iar S e pond, occupying perhaps 50 



(After Lugger.) a( , res of the Wabasll R j yer bottoms, and 



on the other side a sandy hill or bluff of the river, which was cov- 

 ered with typical prairie grasses and plants. The locust was 

 found only in an area of about five acres, on the side of the hill, 

 and in the bed of the canal. When disturbed it leaps vigorously, 

 and without noise, for several times in succession ; then settling 

 down on a sandy spot, it will allow a close approach, evidently 

 relying upon the similarity of color between its body and the sand 

 to shield it from observation. 



The Yigo Co. and Chicago records are the most eastern for the 

 species, though it probably occurs over other sand-covered areas in 

 the western third of Indiana. Its known range extends from cen- 

 tral-western Indiana north through Wisconsin and Minnesota to 

 Aweme, Man., and Medicine Hat, Sask., west to Montana and 

 southwest to Kansas, northern Texas and New Mexico. In north- 



