LOCUST OBSERVATIONS IN THE NORTHWEST. 57 



collected a few of these locusts, and, in addition, several specimens 

 of the Arphia mentioned as having been seen at Santa Fe. It was 

 found to be partial to the high, rocky mesas, about 1,000 feet above the 

 Rio Grande. Here we also took several pupa3 of some Tettigidean, which 

 frequents low, wet places near the river. Going into the Taos valley 

 we found about the same species heretofore mentioned, with the addi- 

 tion of the larvie of several others, but in no case could any of these 

 be referred to Caloptenus spretus, although there appear to be some 

 representatives of the genus Caloptenus found there. 



Two species of Chimarocephala were met with in the rank vegetation 

 (willows and cotton woods) at Red River, and some larva; and pupaB of 

 one or two species of Pezotettix were taken. These were found among 

 the sedges along the river. 



At Fort Garland, Arphia and Chimarocephala are represented along 

 the valley of Ute Creek in fair numbers, and as one walks along among 

 the trees numerous males of these species are to be seen in the air. 



After leaving Fort Garland, I did not notice any locusts until we 

 reached a point below Laveta, where the train stopped for something, 

 and I heard the rattling noise made by some species of Comphoceras, 

 and after searching a while succeeded in capturing a male specimen. A 

 few immature specimens of several other species were also observed, 

 but not captured. Between there and here (Fort Collins) no stop was 

 made, and consequently no specimens taken or no locusts of any kind 

 noticed. Here, in the mouth of Poudre Canon, 12 miles to the north- 

 west of Fort Collins, since the numerous heavy rains, there is a great 

 variety of locusts, mostly young, of which we have taken large series. 

 These are, however, all " natives." Almost all of them are such species 

 as are partial to certain plants, or else to particular kinds of surface 

 configuration. These peculiarities can, however, be better set forth in 

 a work entirely devoted to the history of North American locusts. 



There do not appear to be any species of migratory locusts here at 

 present; none have been noticed in the air or on the ground. Speci- 

 mens of Caloptenus minor, with both blue and red tibia', are quite com- 

 mon here; in fact this is the only species of fledged Galopteni that 1 

 have thus far observed in this portion of Colorado this spring, though 

 the young of several species are occasionally met with. I have also 

 taken a few specimens of what to me now, without comparison with 

 description, appear to be the Pezotettir dodgei of Thomas. P. (Boo- 

 tylotum) pictns is just now commencing to hatch, while some of the 

 Stenobothri and (Edipodw have reached the pupa state. 



At various points along the route we observed a few species of " na- 

 tive locusts" in various stages of development, though none were taken 

 except at a point on Laramie Plains, until we came to the Laramie 

 River. These were a species of Gomphocerus that was found about 10 

 miles from Tie Siding, and its peculiarity consisted in the close re- 



