( viii ) 



from several directions in columns, then scatter and forage, 

 retiring subsequently in column formation again, and when 

 they have once found food they always return again sooner 

 or later, following the same paths as before. 



" At the present time the plantation drivers, Dorylus 

 nigricans, are lodged in the bed of a diied-up streamlet where 

 they are busily engaged in killing and eating the crabs, large 

 fellows with a body often the size of one's hand, which live 

 in holes in the banks. They leave only the empty shell in 

 the course of 24 hours' work." 



The Pierine Neophasia terlooti, Behr., female, A 

 NEW North American mimic op Danaida plexippus, L., 

 (archippus, L.). — Prof. Poulton showed a male and female 

 of terlooti from Arizona, sent to him by Dr. H. Skinner, of 

 Philadelphia, who had called his attention to the resemblance 

 of the female to the common D. plexippus. Dr. Skinner had 

 stated that he had received an example of the female as a 

 " little Danais." Prof. Poulton said that no one could doubt 

 the reality of the mimetic resemblance when the tints of the 

 upper side and exposed parts of the under side of terlooti were 

 compared with the corresponding surfaces of the Danaine 

 model. It was of great interest to recognise the existence 

 of a new mimic — and especially of a Pierine mimic — in the 

 temperate zone. 



Dr. F. A. DiXEY said, with reference to Prof. Poulton's 

 interesting exhibit of Neophasia nieuapia and N. terlooti, that 

 he had some years ago drawn attention to the remarkable 

 mimetic female of the latter insect, though he was not in a 

 position to show a specimen. His communication would be 

 found in Proc. Ent. Soc. Lond., 1905, pp. xx and xxi, where, 

 however, the date 1904 was twice over given in error for 1894. 

 Many mistakes had been made in respect of N. terlooti female ; 

 and it was not till some time after its discovery that it was 

 recognised as the female of a well-known species. When it 

 was supposed to be an entirely new form, it was the subject 

 of an amusing contest for priority between certain entomo- 

 logists. One of these competitors named it princetonia in 

 honour of his University, whose colours it displayed upon 

 its wings. Some account of the rather unusual tactics 



