8 University of Michigan 



small supplies of seeds are stored up. The latter observation 

 was made upon only two nests. 



4. Cremastogaster lineolata Say var. cerasi Fitch. — The 

 first of this species noted was a small band of isolated workers 

 in a much decayed pine log on the west beach, forty or fifty 

 feet from the water. They were extremely timid and hurried 

 frantically for shelter when alarmed, a reaction quite different 

 from those observed later. The punky wood in which they 

 were found was very wet, and in one end of the log, close to 

 the band, was a small colony of Lasius americaniis. There was 

 apparently no intermingling of the two species, hostile or oth- 

 erwise. On September 20 a very large colony was found in a 

 soft, damp poplar log in a low dogwood thicket. The nest 

 was fully five feet long and the colony must have comprised 

 many thousands of individuals. Two aleate females were 

 taken. Certain parts of the nest between the log and the earth 

 had been constructed of a sort of vegetable felt, but the amount 

 of this kind of structure was small compared with the extensive 

 tunneling in the soft wood of the log. The lower part of the 

 log was very soft, almost earthy in places, but the upper half 

 was still comparatively sound. In this sounder part of the log 

 there were numerous borer burrows, some still occupied by 

 the larvae, and these ready-made burrows had been utilized 

 by the ants which had continued and elaborated them greatly. 

 During the opening of this nest, the decidedly repulsive odor 

 so characteristic of the species was very noticeable. The ants 

 themselves were ferocious, and made no attempt to escape or 

 hide. This was by far the largest colony found on the island. 

 In the same habitat several other smaller colonies were found, 

 all living under the same conditions. 



A few colonies were found along the north beach, all in 

 very damp, small logs that were soft from decay. In one in- 



