2 3 8 



A. M. FIELDE. 



FlG. 3. Lasiits lalipi-s, magnified. Actual 

 length 5 millimeters. 



behavior of the M ants 

 indicates that that of the 

 A 3 ants was based on a 

 recognition of odor, and 

 that//rr Stenaimnri s power 

 of recognition extends 

 through an interval of at 

 least seven months. 



The B Series. 



Another series, marked 

 B, was also established, 

 having its beginning on 

 July 20, 1903, additions 

 of newly-hatched work- 

 ers being made to the 

 mixed colony up to Au- 

 gust 28, or during a pe- 

 riod of forty days. The 

 B mixed colony consisted 

 of Stenamma fufown of 

 the C colony, Lasins la- 

 tipes of the F colony, and 

 Cremastogaster lineolata 

 of the H colony. On 

 September 24, 1903, I 

 separated these ants ac- 

 cording to genera, segre- 

 gating each genus in a 

 new Fielde nest, marked 

 Bi, or B2 or 63, where 

 it remained until the end 

 of the recorded experi- 

 ments, with no other ants 

 than those here men- 

 tioned ever introduced 

 or permitted to hatch in 

 its nest. 



