SUBFAMILY II. OEDIPODIN.*:. 267 



gular. Frontal costa as in key, the upper third narrowed, punctate. An- 

 tennae slightly shorter than head and pronotum, female, equalling their 

 length, male; filiform, the segments feebly flattened. Pronotum with disk 

 a little wrinkled on prozona, covered somewhat regularly with small 

 rounded tubercles, these more prominent in female; metazona flat, its hind 

 margin right-angled, male, obtuse-angled, female; median carina low but 

 distinct, cut by principal sulcus slightly in front of middle; lateral carinae 

 subobsolete, with traces only on metazona. Tegmina with basal lobe of 

 lower margin noticeably expanded, especially in female. Hind femora 

 broadly dilated, the upper and lower margins much elevated, sharp, curved. 

 Length of body, $, 3133, ?, 4245; of antennae, $, 12.5, $, 13.5; of pro- 

 notum, $, 8.5, 9, 11; of tegmina, $, 2733, $, 3843; of hind femora, $, 

 1718, $ , 2123 mm. 



This large and handsome locust has been taken in Indiana 

 only in Crawford, Lawrence and Jennings counties. In the vicin- 

 ity of Wyandotte Cave, Crawford Co., it is, in the latter half of 

 June and first part of July, one of the most common of the Oedi- 

 podina?. It occurs only on the uplands, where it frequents grain 

 fields, open bare places in the woods, roadsides and timothy mea- 

 dows. The male, when flushed, flies rapidly for a long distance, 

 making a low rattling note while in the air; the female, as in kin- 

 dred species, is too heavy-bodied to take to wing gracefully, and 

 therefore more often moves by leaping. In the vicinity of North 

 Vernon and Mitchell, males only were seen. It probably occurs 

 throughout the southern third of the State, where it doubtless win- 

 ters in the nymph stage. 



The range of H. jthomicoptcrus is, in the main, confined to the 

 Austral life zone, extending from southern New Jersey westward 

 to southern Indiana, Moline, Illinois, and eastern Nebraska, and 

 south and southwestward to Florida, Mississippi, Oklahoma and 

 Texas. In Florida it has been taken by me only in the nymph 

 si age, at Ormond, Sanford and Dunedin. About Dunedin the 

 nymphs are quite common in February and March along the rail- 

 way embankments, roadsides and sandy spots in open pine woods. 

 It is recorded from numerous places in northern Florida, but is 

 uncommon in the southern portion, though taken at Miami. 



Morse (1907, 34) states that "in early summer it is the com- 

 monest species of the genus from Arkansas eastward, frequenting 

 fields and waste grounds, and sometimes entering the more open 

 forests." Vestal (1013, 21) says that in central Illinois it is com- 

 mon in bunch grass on sand prairies, winters in the nymph stage 

 and matures probably late in May. He adds: "There is in Illi- 

 nois a time adjustment with species of Hippiscits much as in .Ir- 

 pJiia. //. iipicHluhis is the earliest, followed by plHriiicoptcntx and 

 Jmldnminii, which in turn gives place to rugosus." Ocdipnda 



