5.ê 



under similar conditions in 1910, laid eggs which were left scat- 

 tered about, were never attended to by the ants, and did not 

 hatch. 



The females eventually died. When pupae of F. sanguínea 

 and F. fusca were introduced, the females sometimes collected 

 them together, and rested on the top. The females of F. san- 

 guínea, therefore, are just as incapable of looking after their 

 own eggs as those of F. rtifa, though the}^ pay more attention 

 to the pupae than do the latter. Viehmeyer, in 1909, records 

 similar experiments with the same results. 



There are few instances of incipient colonies of mixed 

 F. sanguínea and F. fusca having been found in nature. 



Wasmann records that he once found at Exaten in Holland 

 a dead F. sanguínea female in a F. rufiharhis nest, held by the 

 legs and antennae by a number of the F. rufiharhis workers. 



The youngest colony he ever found in the same place, on 

 May 23rd, 1889, contained about ninety F. fusca workers, a 

 female F. sanguínea, and only five freshly-hatched workers of 

 the latter. 



Schmitz saw in the summer of 1898, near Exaten, a F, 

 sanguínea which endeavoured to enter the difíerent doors of a 

 F. fusca nest. She went into one door, then came out and 

 entered another, and so several times backwards and forwards. 

 He says the numerous F. fusca workers about did not hinder 

 her, but is unable to rerriember if she was finally accepted. 



Viehmeyer in 1909 records that, in company with Forel 

 and Wheeler in the Rhône tal, he found a small F. sanguínea 

 colony which contained two females, a few small F. sanguínea 

 workers, some small F. rufiharhis workers, and about six pupae. 

 The F. rufiharhis workers had only just hatched, and the pupae 

 proved to be F. rufiharhis. Again in the middle of August, near 

 Dresden, he found under a stone in a small earth-hole a F. san- 

 guínea female, two very small i". sanguínea workers, and three 

 equally small F. fusca workers. On searching further he found 

 a F. fusca female, two more F. fusca workers, and some pupae. 

 This made him think of an alliance between the F. sanguínea 

 and F. fusca females, the F. sanguínea workers being certainly: 

 younger than the F. fusca workers. 



He put a F. sanguínea and F. fusca. iema.le together, and in 



