414 FAMILY VI. ACRIDID.E. THE LOCUSTS. 



notched than in J/. atlams, the latter agreeing perfectly with Scud- 

 der's description (1897, 169) and figure of M. alaskanus." At 

 Pequaming, Mich., Hebard (1909, 158) found br-uneri in meadow 

 land in rather scarce numbers. Morse (1909, 301) states that M. 

 alaskanus Scudd., described from Alaska, is "apparently the domi- 

 nant form of the genus occurring on Isle Royale, judging from its 

 abundance in the material examined and the localities where de- 

 rived. It is recorded from clearings, along trails, rock ridges, the 

 beach heath zone, etc." 



The known range of M. bnutcri, as given by Scudder (1897, 

 16G), extends from the points above mentioned northwest through 

 Saskatchewan and Alberta to Spilmacheen, B. C., and Alaska, 

 west to Montana, Idaho and Washington and south to Nebraska, 

 Colorado and New Mexico. It is not recorded from Minnesota by 

 Somes nor from Colorado by Gillette; and R, & H. (1906, 406) 

 mention the taking of onh' a single specimen in Yellowstone Park, 

 Montana. 

 193. MELANOPLUS ATLANIS (Riley), 1875, 169. Lesser Migratory Locust. 



Size medium for the genus, the females but slightly the larger; form 

 rather slender. Color either dark grayish- or reddish-brown above, green- 

 ish-yellow beneath. Head olive-brown mottled with darker; the usual post- 

 ocular dark stripe confined to the prozona and in the reddish-brown speci- 

 mens and females often indistinct or broken into smaller spots. Tegmina 

 grayish-brown, flecked distinctly with fuscous along the median area. 

 Hind femora reddish-yellow with two oblique dark bars across the upper 

 and outer faces, the lower face usually pinkish or pale orange red; knees 

 blackish. Hind tibiae usually pale red, sometimes pale glaucous. Sides of 

 abdomen dull yellow, often flecked with fuscous. Interocular space nearly, 

 male, or fully, female, twice as broad as basal joint of antennae; fastigium 

 strongly declivent, distinctly sulcate, male, shallowly concave, female. 

 Frontal costa short, not reaching clypeus, feebly or not at all sulcate below 

 the ocellus, the upper third a little narrowed. Pronotum rather short, dis- 

 tinctly expanding on metazona, the disk flat or nearly so, hind margin ob- 

 tuse-angled; metazona densely punctate, almost equalling the prozona in 

 length. Extremity of male abdomen but little upcurved. Supra-anal plate 

 broadly triangular, apex subacute, basal halves of side margins broadened 

 and distinctly elevated; median sulcus narrow, rather deep, percurrent or 

 nearly so. Furcula consisting of a pair of moderately diverging, slender 

 subcylindrical tapering spines, almost one-third the length of supra-anal 

 plate. Cerci as described above and shown in PI. Ill, i. Subgenital plate 

 narrowing regularly from below upward, the apex somewhat thickened and 

 elevated, and with a distinct median notch. Pallium hood-shaped, raised 

 above the lateral margins of the subgenital plate. Length of body, $ , 

 1721.5, 9, 1827; of antennae, $, 1 9, 9, 6.58; of pronotum, $, 5, 

 9, 5.5; of tegmina, $, 1621, $, 1522; of hind femora, $, 1113, 9, 

 1114 mm. (Fig. 142.) 



This is a very common locust throughout Indiana, having been 



