SUBFAMILY III. LOCUSTINJ3. 407 



abundance toward the Mississippi River." West of that stream 

 it has been recorded only from Arkansas, Missouri and Nebraska. 

 McNeill has recorded viola from Running Lake, 111., and states 

 (1899a, 345) that it is abundant in northern Arkansas and prob- 

 ably throughout the State, occurring on wooded hillsides between 

 June 30 and October 26, and that it is sometimes known to lay its 

 eggs in small holes in rocks in stone fences. Bruuer mentions it 

 as ''occasionally met with in the southeastern part of Nebraska," 

 and Riley (1878, 220) as reaching maturity about St. Louis, Mo., 

 on August 18. These are the only definite records of the form 

 viola which can be found, and Scudder (1897, 357) not recognizing 

 that it was only a form of his robustus, says : "It appears to have 

 a rather narrow range in the central Mississippi Valley between 

 latitude 37 40, and longitude 86 96." This form bears a 

 close general resemblance to J/. icalsliii, but is larger, much more 

 robust, with widely different male cerci, wider frontal costa and 

 relatively shorter prozona. 



The typical form robustus has been definitely recorded outside 

 of Texas only by Morse as above mentioned. In Texas it seems 

 to be widely distributed. Bruner (1893, 17) mentions it as occa- 

 sionally doing much damage in central Texas, and states that it 

 "is also quite closely related to Pezotetti.r riola Thomas, which oc- 

 curs in Illinois, Indiana and Missouri." Hart (1906a, 159) re- 

 cords robustus as common at Houston and College Station, Texas, 

 "in margins of heavy forests and on low flat bottom land asso- 

 ciated with J/. plclH'jns Stal." 



191. MELANOPLUS DODGEI HUROXI Blatchley, 1898a, 195. Huron Short- 

 winged Locust. 



Size medium for the genus, large for the group; form robust. Dark 

 brown marked with fuscous above, clay-yellow beneath. Face reddish- 

 yellow flecked with fuscous dots, male, dark gray, female. Sides of head 

 with the usual shining dark stripe extending back to metazona, black in 

 male, brown and less distinct in female, bordered below by clay-yellow. 

 Tegmina dark brown mottled with small, quadrate fuscous spots, (larger 

 and more prominent in female) ; these forming a row along the middle of 

 discoidal area. Hind femora dull yellow, with two oblique black bars on 

 outer, upper and inner faces; knees fuscous, preceded by a pale ring; 

 lower face and hind tibiae deep pinkish-red. Tnterocular area one-fourth 

 wider than frontal costa between the antennse, male, nearly two-thirds 

 wider, female. Frontal costa prominent, rather narrow, strongly punc- 

 tate, feebly sulcate only just below the ocellus, with median carina sharp 

 and distinct on metazona, evident but very low on apical third of prozona, 

 otherwise obsolete; prozona but slightly longer than the coarsely and 

 densely punctate metazona; lateral carinae evident but rounded; hind mar- 

 gin broadly obtusely angulate. Tegmina one-third to one-half longer than 



