468 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
or dark fuscous. The markings are much less distinct than in 
either *S. saxatile or S. holli as a rule. 
Disk of wings pale yellowish, the transverse black band broad, 
equal to one-fourth of wing or more, extending nearly to anal 
angle; beyond this transparent, the veins infuscated, and in the 
male the tip also. Hind tibiae and tarsi bright red, the spines 
black-tipped, the base often pale externally. Disk of pronotum 
sometimes marked with an indistinct pale X; very rarely, in New 
England specimens, the metazone is pale clay-color, producing 
the collared type of marking alluded to in the specific name, a 
pattern not uncommon in the West. 
The two races intergrade and individuals are found which are 
intermediate in character. The smaller race, wyomingianum, is 
common extralimi tally, but all of the New England specimens 
which I have seen are intergrades or typical scudderi. For a 
discussion of the characteristics of these and other races my two 
papers cited above (1894, 1895) should be consulted. The typical 
differences may be briefly stated as follows: wyomingianum is 
smaller; the head less compressed, especially above; eyes larger 
and more prominent ; antennae longer proportionally ; pronotum 
less compressed, and posterior process more acutely pointed; 
hind femora less distinctly fasciate externally, and internally the 
proximal fuscous band is obsolete ventrally and the proximal two 
are not connected, — in scudderi both are complete and broadly 
connected. 
Measurements: — scudderi. 
Total Body Tegmina Hind femora Antenna 
Male 28.5-30.5 21-23 23 -24.5 13-14 11.5-12.5 
Female 32 -35.5 27-29 25.5-28.5 14-16.5 11 -11.5 mm. 
Measurements .' — wyomingianum. 
Total Body Tegmina Hind femora Antenna 
Male 23.5-26 18-20 18.5-20.5 11 -12 9.5-12 
Female 29 -31.5 24-29 23 -25.5 12.5-15 10 -13 mm. 
Scudder's Barren-ground Locust is a common species in south- 
ern New England from early July until October, in open sandy 
fields, generally numerous where found, and easily detected. It 
is, however, quite local, almost as much so as its congener the 
Ledge Locust, and probably for similar reasons in regard to the 
character of its habitat. Its flight is heavier, less powerful and 
erratic than that of either of its allies, and it is not difficult to cap- 
