6G 



nisbed a species of Trimerotrop is vi'hich maybe new, as did tbe grassy 

 bluffs near Yaleutine one belonging to tbe genus Mesops. 



The next bait was made at Buffalo Gap, Dak., wbere I took tbe 

 stage for Hot Springs, a point 15 miles distant and mucb better situ- 

 ated for making collections in tbe Acndime. A portion of two days was 

 spent bere and some collections made, witb tbe result of greatly extend- 

 ing tbe known range of a number of species. Ko new material was 

 found. 



From tbis latter place I bired a team, in company witb a commennal 

 man, to Custer. At tbis place mucb interesting material was taken, 

 and Harney Peak, tbe bigbest point in tbe Black Hills, visited, upon 

 tbe summit and upper slopes of which sub-alpine forms of Melanoplus 

 and Fezotettix were taken. One of these, possibly two of them, may be 

 new. A good series of all were obtained, notwithstanding the difficulty 

 with which tbe mountain was climbed, the distance traveled, and the 

 rain that fell during the day. Tbe altitude of Harney Peak is just 

 about 8,000 feet above sea-level. Collections were also made at about 

 5,000 feet elevation. At this latter elevation a species of Arcyptera 

 was obtained that is new to me, possibly new to science. 



Having visited the most interesting portions of tbe Black Hills region 

 for the collection of Acridians, and not bearing of any locust depreda- 

 tions to tbe northward, it was decided not to visit Kapid City, but to 

 return to Buffalo Gap via tbe Hot Springs. Just before starting I 

 learned of the presence of the Army Worm (Leucania umpuncta), 

 about three miles from Custer. Tbe description was so perfect that tbe 

 identity of tbe insect was sure. My informant claimed that but a single 

 field of oats had been injured. 



At Fort Eobinson, Xebr., a second army-worm depredation was 

 brought to my notice, tbis time receiving my personal attention. Here, 

 as at Custer, but a single field c^f oats was injured, and if attended to, 

 the pupae, which had just formed, can mostly be destroyed, and i)revent 

 tbe possible greater injury next year. 



Here collections were made in the familj^ Acrid ida'y but no new species 

 added. Some of the western or Eocky Mountain species were found, 

 thereby extending their hitherto known range con.^iderably farther 

 eastward. 



At tbis point I was enabled to meet quite a number of Army ofticers 

 and troops who bad recently been over different portions of Wyoming, 

 Colorado, and Utah, and from them learned that tbe Rocky Mountain 

 locust is nowhere present in these parts in more than ordinary nnmbers. 

 To be entirely satisfied as to the possible mistake of these difi'erent per- 

 sons with whom I spoke on tbe subject, I went as far west as Douglas, 

 Wyo., only to find sprefus entirely absent there. In(]uiries here also 

 went to show that this pest is nowhere to be found within tbe region 

 mentioned, nor had any damage been reported since several years 

 ago. Here, also, some scattering injuries by the army-worm were 



