108 Journal New York Entomological Society. [Voi. xxiv, 



July 22. At 4.30 P. M. a large army of breviceps workers was seen 

 hastening along the rocky trail, at an altitude of about 6,000 ft., on 

 the eastern slope of Mt. Tallac, about 50 feet above the surface of 

 Fallen Leaf Lake. The ants were followed to a fusca nest which 

 they had just reached. The fusca workers had retired into their 

 galleries and could be seen hurriedly closing the small entrance from ■ 

 within with pellets of earth, evidently for the purpose of shutting 

 the amazons out. The latter, however, at once tore out the barricade 

 and poured into the nest. Soon they began to bring up the fusca 

 pupae and at once hurried back over the trail. I followed them to 

 their own nest which was nearly 60 feet from the plundered colony, 

 in the narrow crevices of some large rocks where it could not be 

 examined. By 5.15 P. M. all the amazons had entered their nest. 

 The supply of fusca brood secured on this raid was not considerable, 

 since only about one in ten of the returning workers carried a pupa 

 or larva in its jaws. Retracing my steps to the fusca nest, I found its 

 inhabitants slowly and apparently with reluctance returning to it. 



July 24. A small colony consisting of a wingless, ergatoid female 

 and about a dozen small breviceps workers and nearly two dozen 

 fusca workers was found under a log in a warm hollow at an alti- 

 tude of nearly 7,000 ft. on the eastern slope of Angora Peak. This 

 was evidently a young colony, with the ergatoid female functioning 

 as its queen. This insect had the gaster considerably distended with 

 eggs. 



July 2j. At 4.20 P. M. I encountered a small colony of breviceps 

 returning from a raid on the Mt. Tallac trail near Fallen Leaf Lodge, 

 not far from the spot where I observed the foray of July 22. I did 

 not stop to locate the nest. 



July 2p. At 3.45 P. M. I came upon a large breviceps army re- 

 turning to its nest laden with pupae near Glen Alpine Springs at an 

 altitude of about 7,000 ft. The nest was easily found under a large 

 flat stone, which I lifted just before the returning army arrived. 

 The nest-chembers were full of fusca workers and pupse, but on!y 

 two or three amazons had remained among them, and had not, there- 

 fore, taken part in the foray. 



The notes taken on the following dates refer to a single breviceps 

 colony which was observed on five consecutive days, not only by my- 

 self but also by many of my fellow campers and by Mr. Wm. W. 



