494 SIU JOHN LUBBOCK OS ANTS, BEES, AND WASPS. 



panion from nest 9. One of them immediately flew at the strauger ; 

 of the other they took no notice. 



Oct. 18. At 10 A.M. I put in a stranger and a friend from 

 nest 9. In the evening the former was killed, the latter was all 

 right. 



Oct 19. I put one in a small bottle with a friend from nest 9. 

 They did not show any enmity. I then put in a stranger ; and 

 one of them immediately began to fight with her. In the evening 

 the stranger was dead. 



Oct. 24. I again put in a stranger and a friend. The former 

 was attacked, but not tlie latter. The following day I found the 

 former almost dead, while the friend was all right. 



Oct. 31. I again put in a stranger and a friend. The former 

 was at once attacked ; but in this case the friend also was, after a 

 bit, seized by the leg, but eTontually released again. On the fol- 

 lowing morning the stranger was dead, the friend was all right. 



Nov. 7. Again I put in a stranger and a friend. The latter 

 was soon attacked and eventually killed ; of the former they did 

 not seem to me to take any particular notice. I could see no 

 signs of welcome, no gathering round a returned friend ; but, on 

 the other hand, she was not attacked. 



The Senses. 



Much has been written on the use of the antennae of insects. 

 That they serve as organs of touch all are agreed ; but it is almost 

 equally clear that this is not in most cases their only function. 

 Some entomologists regard them as auditory, some as olfactory 

 organs. There is, however, a third alternative, which I would 

 venture to suggest, namely that in those insects in which the 

 sense of hearing is highly developed they may serve as ears, while 

 in those which have a very delicate sense of small, they may act as 

 olfactory organs. This view is not in itself so improbable as might 

 at first sight appear. It is evident that, in the Articulata, organs 

 of sense are developed in various parts of the body. Whether 

 the curious organ discovered by MiiUer in the metathorax of 

 certain Orthoptera be an ear or not, it must surely be an organ 

 of some sense. Hicks and others have described structures in the 

 halteres and wings of various insects which have all the appear- 

 ance of being organs of sense ; while among the Crustacea we 

 find the remarkable case of Mi/sis, which even has an organ of sense 

 in its tail. It is not then so improbable as might at fii'st sight 



