168 BULLETIN 108, UNITED STATES NATIONAL MUSEUM. 



On May 24, 1915, Harvey made the following notes at Colorado 

 Springs: Many colonies occurred under old, dried "cow chips" or 

 dung in a northerly pocket of open mesa land covered sparingly with 

 Yucca, bunch grass, mountain mahogany, etc. Small dark red ants 

 occupied the "cow chips" along with the termites. 



Only "cow chips" firmly cemented to the ground and 2 or 3 inches 

 thick with weeds and plants growing up through them contained 

 termite colonies. The termites occupied the lower side of the 

 "cow chips," which were moist. The ants occupied the upper 

 portions, which were dry. The ants also occupied the thinner edges 

 of the "cow chips," which were also dry. Many termites were found 

 on the moist ground under the " cow chips" and their tunnels entered 

 the earth below. 



Apparently this species has habits similar to other Reticulitermes; 

 that is, it excavates subterranean tunnels and is essentially wood- 

 destroying, but does not injure the woodwork of buildings in the 

 vicinity of Colorado Springs, El Paso County, Colorado. 



M. Chrisman collected workers and soldiers of tibialis on August 

 22, 1914, in Bear Canyon, Santa Catalina Mountains, Arizona, at the 

 surface of a soil gallery in the sapwood of a small dead black oak 

 tree. 



SWARMING. 



E. O. Essig collected winged adults of this termite swarming on 

 January 5, 1916, at Sanger, California, near Presidio; at Provo, Utah, 

 March, 1875 (Spaulding). In Colorado, R. tibialis has been found 

 swarming in the spring and fall. Osten Sacken (1877) collected 

 adults flying at Manitou, Colorado, on August 19. At Colorado 

 Springs, Colorado, A. B. Champlain found adults swarming and 

 crawling on the sidewalk, at 10 a. m., on March 24, 1915, elevation 

 6,000 feet. On April 8, 1915, George Hofer, A. B. Champlain and 

 W. D. Edmonston again found sexual adults of this species: 



Stragglers, wingless specimens taken on sidewalk for a distance of 1 mile. Finally 

 we found a hole between two large flagstones on sidewalk; here we found winged, 

 wingless, and one light-colored individual. We could not dig them out as the stones 

 were too close and heavy. 



On April 10, B. T. Harvey also collected winged adults. The day 

 was bright and warm and the swarm emerged from 11 a. m. to 1 p. m. 

 It had rained the day before. As late as April 19, Harvey found 

 adults emerging from the ground, at an altitude of 6,075 feet above 

 the sea level. 



Winged adults of this species have been found at Colorado Springs, 

 Colorado, in the autumn. On September 9, 1917, Messrs. Edmonston, 

 Hofer, and Craighead found these winged adults ready to swarm on a 

 side hUl near the entrance to the canyon at the mouth of Ute Pass. 

 Workers and soldiers were crawling about on the ground in the center 

 of the trail into the bright sunlight. 



