468 ENTOMOLOGICAL NEWS [DeC, '14 



Of the six names of editors and advisory committee borne 

 on the covers of the first three numbers, three are still to be 

 found there, and among our subscribers and contributors we 

 have the pleasure of counting some who have been with us 

 continuously from the very beginning. All thanks to our 

 friends, near and far, whose support has enabled the veterans 

 and their later associates to increase and to carry on the News 

 unto this present. ATay their aid and that of their successors 

 continue to us and to those who shall take our places ! 



Notes and. News. 



ENTOMOLOGICAL GLEANINGS FROM ALL QUARTERS 

 OF THE GLOBE. 



A Method of Injecting the Tracheae of Insects. 



In working on the internal anatomy of various insects, I stumbled 

 upon a plan for injecting the tracheal system, which renders it com- 

 paratively easy for the dissector to follow this system to its smallest 

 branches. 



Place the insects in a flask and pour in just enough India ink to 

 cover them. In the case of Coleoptera and Hemiptera it would be 

 better to first remove the wings. Connect up the flask with an aspirator 

 which is attached to a common water faucet. On turning on the 

 water, the air is withdrawn from the flask by the aspirator, creating 

 a vacuum. At the same time the air is withdrawn from the tracheae 

 of the insects, and is replaced by the India ink. On opening up the 

 insect, the tracheae will stand out clear and black, and can readily be 

 followed. — E. H. DusHAM, Instructor in Entomology, Pennsylvania 

 State College, State College, Pa. 



Callosamia promethea and angulifera (Lepid.). 



During the spring I collected some cocoons of promethea hanging 

 on spice-bush in my garden. They were placed in a hat box and the 

 box covered with mosquito netting. The box was kept in a corner of 

 a room on the third floor of my home at Ardmore, Pennsylvania. 

 On June 27th a male and female of promethea emerged, and in the 

 evening between eight and nine o'clock moths were noticed flying 

 against the wire screen of the window of the room where the pro- 

 methea were kept. The screens were raised and fifteen male anguli- 

 fera came into the room and were captured. The windows were then 

 closed. How many more would have entered had they been left open, 

 it is not possible to say. The exact relationship between these two 



