1906.] NATURAL SCIENCES OF PHILADELPHIA. 359 



5, 1 00 feet. Dming the brief stops made by the train between Livingston 

 and Gardiner a httle collecting was possible. These stations are 

 situated in the valley of the Yellowstone river between the Snowy 

 Jlountains and the Gallatin Range. The vegetation is chiefly sage- 

 brush and other plants which grow in a semi-arid soil. Orthoptera 

 were very plentiful, and had time allowed a great quantity could easily 

 have been taken. 



Muir, Bozeman Tunnel, Park Co., elevation 5,49G feet. At this 

 point a few minutes' stop afforded an opportunity to collect in the 

 heavy growth of weeds and grasses along the track. The vegetation 

 was very luxuriant and wholly different from that found in the semi- 

 arid sections. The Orthoptera of regions of this character was always 

 much less abundant than in the sage-brush country. 



Three Forks, Willotv Creek and Sappington, Gallatin Co., and Jefferson 

 City and Whitehall, Jefferson Co., elevation 4,061-4,529 feet. During 

 the brief stops made at these towns a few specimens were taken. 

 The soil w^as barren and Orthoptera was far less plentiful than in the 

 more eastern portion of the State. 



Spire Rock, Jefferson Co., elevation 5,217 feet. Among the great 

 boulders on the summit of the mountains near Butte a few specimens 

 were seen and hardly any vegetation found. This locality was by far 

 the most desolate of any at which collecting was done. 



Yellowstone Park. 



Mammoth Hot Springs, elevation 6,215-7,000 feet. At Fort Yellow- 

 stone, where the Mammoth Hot Springs are situated, a great variety 

 of collecting grounds are within easy reach. About the fort itself, 

 among the weeds and grasses, Orthoptera were not very plentiful ; but 

 immediately behind the hotel, in the dense sage-brush growing on the 

 sides of the foothills, vast quantities of Orthoptera of many species 

 were to be found. Collecting here was somewhat difficult owing to the 

 steep hillside and the agility of the majority of the species, as well as 

 the difficulty of following more interesting specimens on account of 

 the quantities of more common species which everyw^here swarmed. 

 At a greater elevation on the sides of these hills the sage-brush gave 

 place somew^hat to grasses and other low growing plants, where Orthop- 

 tera were less prevalent but more desirable. On the summits, however, 

 the ground was pebbly and overgrown with sparse and stunted grasses, 

 in which situations many most desirable species were abundant and 

 could be easily taken in the scanty vegetation. In one grass}^ hollow 

 near the top of the foothills, among scattered bushes near a thicket 



