SIR J. LUBBOCK ON ANTS, BEES, AND WASPS. 365 



The larvae were left by themselves in the violet, while pupae were 

 ranged from the end of the green to that of the red inclusive. 



Exp. 3. — Arranged a nest of L. niger as before ; at the com- 

 mencement the pupae and larvae were much scattered, being, how- 

 ever, less numerous in the violet and ultra-violet rays. Those 

 in the ultra-violet rays were moved first, and were deposited, the 

 larvae in the violet, and the pupae in the red. 



Exp. 4. — Made the same experiment with another nest of 

 L. niger. At the commencement the larvae and pupae were in the 

 violet and ultra-violet portion, extending to double the distance 

 from the visible end to the thalline band. The ants soon began 

 bringing the pupae to the red. Over part of the red I placed a 

 piece of money. The pupae were cleared from the ultra-violet 

 first. That the pupae were not put in the red for the sake of the 

 red light was evident, because the space under the coin was even 

 more crowded. The pupae were heaped up in the dark as far as 

 the thalline-band of the other spectrum. I then brought the 

 second spectrum nearer to the first. The pupae which thus found 

 themselves in the thalline band were gradually moved into the 

 dark. 



Exp. 5. — Tried the same with another nest of L. niger. The 

 pupae were at first in the violet and ultra-violet about double as 

 far as the thalline line, while most of the larvae were in the green. 

 The experiment began at 1.15. The furthest part was cleared 

 first ; and they were again brought principally into the yellow, red, 

 and dark. 



Again, I arranged them pretty equally from double the distance 

 of the thalline from the violet as far as the blue of the other 

 spectrum, most, however, being in the violet and blue and a few 

 scattered all over. 



The pupae in the red were not moved. The others were carried 

 beyond the thalline band into the yellow or red. 



Exp. 6. — Repeated the same experiment. Begun it 11.15. 

 Placed some pupae in the red, some in the yellow, and a few 

 scattered over the second spectrum ; there were none in the 

 nearer one. 



They were all carried away from the red past the violet, and 

 put down in the dark portion, or in the red and yellow, of 

 the nearer spectrum. 



These experiments surprised me much at the time, as I had 

 expected the pupae to be carried into the space between the two 



LINN. JOURN. — ZOOLOGY, YOL. XY. 29 



