4'4 



ANTS. 



l.y means of their tliree posterior pairs of legs while the large fore pair 

 is stretched out and moved about like antenna?. Janet found that these 

 creatures, whether present in odd or even numbers, are always oriented 

 in a symmetrical position with respect to their host (Fig. 244). When 

 only one . I iitcnno Chorus is present, it clings to the gula, or ventral 

 .surface of the ant's head, with its fore legs directed towards the ant's 

 mouthparts. \Yhen two are present, there is one on each side of the 



FIG. 250. Orasema viridis. (Original. 1 ) A, Female ; B, male. 



head or one on each side of the gaster ; in the former case the antenni- 

 form appendages are directed towards the anterior, in the latter towards 

 the posterior end of the ant's body. When there are three mites, one 

 attaches itself to the gula and the two others to the sides of the gaster. 

 Four place themselves in pairs on the sides of the head and gaster. If 



