REHN AND HEBARD 81 



A NEW SPECIES OF GRASSHOPPER OF THE GENUS 



CHLOEALTIS (ACRIDINAE) FROM THE 



PACIFIC COAST 



BY JAMES A. G. REHN AND MORGAN HEBARD 



In Oregon, a short distance north of the Cahfornia Hne, the 

 raih'oad between Portland and San Francisco winds its course 

 up from the Rogue River Valley into the eastern portion of the 

 Siskiyou Mountains, and, finding a way through, drops into the 

 broad Klamath River region of California. At the little station 

 of Siskiyou, at forty-one hundred feet elevation, is the highest point 

 of this crossing of the mountains. The heavily wooded slopes 

 rise sharply from the little valley, up which the railroad winds 

 its way to the tunnel piercing the final barrier of the mountains. 

 On August 13, 1909, the authors spent some hours collecting 

 Orthoptera in this vicinity, examining particularly the slopes to 

 the west of the track, reaching the summit of the ridge on that 

 side, which is at an elevation of fifty-eight hundred feet. 



From forty-two hundred to five thousand feet, the very steep 

 slopes were covered with a heavy and truly magnificent forest of 

 fir and pine, above which alpine hemlock became e\ddent and the 

 whole forest more open with scanty undergrowth. At fifty-six 

 hundred feet we entered a summit bald, treeless but covered with 

 an almost impenetrable bushj^ scrub, four to five feet high, through 

 which were scattered grassy areas, especially along the lower 

 edge of the bald. In the more open forest above five thousand 

 feet and in the grassy areas of the summit bald we found a most 

 active grasshopper belonging to the genus Chloealtis. Knowing 

 the interest attached to the capture of this genus many hundreds 

 of miles away from the previously known occurrence of either of 

 its species, we made special effort to secure individuals. It was, 

 however, not common, and we were compelled to be satisfied with 

 a series of two males, three females and one immature female. 

 In the timber we found the species near dead branches and its 

 oviposition is doubtless performed in a similar fashion to that of 

 the other species of the genus. The form is quite distinct from 

 the others of the genus and we here describe it. 



TRANS. AM. ENT. SOC, XLV. 

 6 



