302 BRITISH ANTS. 



sanguinea female taken at Woking in a sanguinea nest, in which no 

 males were present. She was introduced into the light chamber of 

 a small plaster-nest with two divisions, the dark chamber of which 

 contained seven fusca females, three fusca workers, a few larvae and 

 one cocoon. (This small brood had been brought up by these ants, 

 which had been taken from a fusca colony at Hynish, Tiree, in 

 April.) The sanguinea female soon entered the dark chamber ; the 

 fusca females and workers ran away and hid in corners, and later in 

 the day all but one female had gone into the light chamber, taking 

 the larvae with them, but the sanguinea female had captured the 

 cocoon, which she held in her jaws. On July 3rd all the fusca 

 workers had been killed and the sanguinea female was again holding 

 the cocoon in her jaws, the fusca females being all huddled together 

 in one corner with the larvae. July 4th, one of the fusca females 

 had been killed, and the sanguinea female had collected the two 

 largest larvae and the cocoon. Four of the fusca females were now 

 removed, being required for other experiments. July 5th, the two 

 remaining fusca females had been attacked, one having had both her 

 antennae bitten off, and on July 7th both were dead and the 

 sanguinea female was resting on the cocoon and the two larvae. 

 July 8th, a naked pupa from a fusca nest from Porlock was intro- 

 duced, and the sanguinea female added it to her collection. July 9th, 

 the female still resting on her heap, ten fusca cocoons were intro- 

 duced; these she also collected and placed with the others. July 13th, 

 the Tiree cocoon produced a callow, and the empty case had been 

 carried into the next compartment. The largest larva had changed 

 into a naked pupa, and the sanguinea female and the callow were 

 resting together on the other cocoons and on the two naked pupae 

 and the small larva. 



July 14th, another empty pupa case was found in the light 

 compartment, but as no second callow had hatched, the female 

 must have eaten its contents. July 15th, a second callow emerged, 

 and on the 17th a third, whilst a single egg was present. July 18th, 

 a fourth callow appeared, and the egg had vanished, the female 

 was still helping to carry about the cocoons 78 , and by August 10th 

 eleven fusca workers had hatched . During the whole of 1913 nothing 

 of moment happened in this small colony ; a fusca worker escaped 

 on March 18th ; one died on September 1st and two more on 

 November 5th ; two more workers died before January 20th, 1914, 

 three more in February and another in March. On April 4th the 

 sanguinea female had laid a small packet of eggs, and on the 10th 

 she was holding them in her jaws, the one remaining fusca worker 

 resting beside her. On April 15th the eggs had disappeared, but 

 on the 17th more were laid, and the worker carried them about. The 

 number of eggs increased, but they did not hatch, and on May 25th 

 they were found to be mouldy, so I transferred the Queen and the 

 worker to a small " Crawley-Lubbock " earth-nest. On June 2nd, 



