SIR JOHN lUBTiOCK ON ANTS, BEES, AND WASPS. 621 



for a moment or two ; but the other ants soon seemed to find out 



their mistalce, and on the whole they were certainly treated as 



friends, the attacks never lasting more than a few moments. 



One of them was watched at intervals of half an hour until 5 p.m. ; 



the other we could not distinguish after 3, the paint having been 



removed ; but we should certainly have observed it had she been 



attacked. 



On the whole, then, all the 32 ants belonging to Formica fusca 



and LasiiiS niger, removed from their nest as pupae, attended by 



friends and restored to their own nest, were amicably received. 



What is still more remarkable, of 22 ants belonging to F.fusca, 



removed as pupae, attended by strangers, and returned to their 



own nest, 20 were amicably received. As regards one I am 



doubtful ; the last was crippled in coming out of the pupa-case ; 



and to this perhaps her unfriendly reception may have been due. 



Of the same number of Lasius niger developed in the same 



manner from pupae tended by straogers belonging to the same 



species, and then returned into their own nest, 19 were amicably 



received, three were attacked, and about two I feel doubtful. 



On the other hand, 15 specimens belonging to the same two 



species, removed as pupae, tended by strangers belonging to the 



same species, and then put into the strangers' nest, were all 



attacked. 



The results may be tabulated as follows : — 



Pupae brought up p^^^ ^^^^^^^ ^p ^^ strangei-e. 



1 "J™™.^^'!'^ . Put in own nest. Put in etrangers' nest, 

 replaced m their own nest. ° 



Attacked 7* 15 



Received amicably. .32 37 



I propose next season to make some more experiments of 

 this nature ; but even the above results seem to me very inte- 

 resting. The differences cannot be referred to any difference of 

 temperament in different nests. For instance, any idea that 

 the specimens of Formica fusoa experimented with in August 

 and September, and amicably received, were so on account of 

 the peaceable character of the nests, is disposed of by the facts. 

 Thus specimens of F. fusca experimented with in August and 

 September last were taken principally from two nests, numbered 

 respectively 36 and 60. Now, while nest 36, in most cases, 

 amicably received ants bred from its own pupae but tended by 

 ants from 60, it showed itself fatally hostile to ants from pupae 

 * About three of these I do not feel sure. 



