OF WASHINGTON, VOLUME XVI, 1014 



Among the parasites were found the traces of two specimens 

 of a Cerambycobius. The remaining parasites were Braconids 

 The material also contained thirteen stages of a Lepidopterous 

 boll feeder, of which one larva was found alive. A predaceous 

 Coleopterous larva was also found. 



During the last two weeks in August the authors made a fchoroug 

 examination of the insects associated with this plant in several 

 localities in Arizona. The lowest altitude at which the plant was 

 found growing was about 2500 feet in Fish Creek Canyon, sixteen 

 miles west of Roosevelt. In this section the plant is quite com- 

 mon not only on the side of the canyon a short distance above the 

 bed but even on the top of the high plateau nearby at an elevation 

 of approximately 3300 feet, Many squares, a few blooms and a 

 few bolls were found on the plants in this section on August 19 

 No weevil indications could be found here. 



On the following day a search was made for the wild cotton plant 

 in one of the canyons near Roosevelt and in a side canyon which 

 opens into Fish Creek Canyon, but no wild cotton plants were 

 found Judging from observations afterward made in the Santa 

 Catalina and Santa Rita Mountains the authors would consider 

 both of these canyons as likely places for the plant to occur. 



Owing to the extensive cultivation of cotton in the Salt River 

 Valley below this point a search has been made for the plant in 

 Hieroglyphic Canyon and also in another canyon of the Salt River 

 Mountains south of Phoenix, by Mr. E. E. Russell under direction 

 of the Arizona State Entomologist's office. No trace of the plant 

 was found. It is quite probable that the wild cotton exists some- 

 where nearer the Salt River Valley cotton plantations than Fish 

 ( 'reek but no search other than mentioned has yet been made. 



From Phcenix we proceeded to Tucson which is on the mesa 

 surrounded by mountain ranges. The presence of cotton at Tuc- 

 son lent considerable importance to the conditions here. Within 

 a few years cotton will be grown for twenty or thirty miles in the 

 Santa Cruz Valley if conditions permit. North of Tucson and com- 

 ing within a very few miles of the cotton fields already planted are 

 the Santa Catalina Mountains. The plant occurs according to 

 our observations and those of Professor Thornber in Puna, Vent- 

 ana, Sabino, Bear and Soldiers Canyons in this range. We 

 found the weevil in the second and Mr. Cook found it in the third. 

 It no doubt will be found in the others. Joining these mountains 

 on the east are the Tanque Verde and Rincoii Mountains in both 

 of which ranges the plant occurs. South of Tucson about thirty 

 miles are the Santa Rita Mountains in which the wild cotton is 

 common. We found it in Sawmill and Stone Cabin Canyons, 

 with the weevil abundant, West of Tucson is a very dry unprom- 

 ising range of mountains, the Tucson Mountains, in which we found 



