Vol. xxiv] ENTOMOLOGICAL NEWS 353 



The temperature of the room in which the stick was kept 

 varied considerably, fluctuating between 45 and 90 degrees 

 Fahrenheit. In the bottom of the jar was placed a pledget of 

 cotton which was moistened with water from time to time. 



On 7th January, 1913, an adult female Neoclytus erythro- 

 cephalus Fab. emerged and on roth January three more beetles 

 of the same species. One of these, a male, attempted sexual 

 union with a female and, after some difficulty, succeeded. The 

 male clung to the female with his front legs and, as she walked 

 about, often grasped one of her elytra along the sutural mar- 

 gin with his mandibles. He also assisted himself at times, 

 with his mandibles by grasping the short, dorsal transverse 

 ridges on the prothorax of the female. This characteristic 

 was observed again in individuals that emerged at a later date. 

 Magdalis armicollis Say, a weevil, emerged on i6th January, 

 1913, from the stick of wood and on the following day another 

 of this species emerged. In the meantime, two more N. ery- 

 throcephalus had emerged. Both weevils were removed from 

 the jar as soon as discovered. 



On 28th January, something over a dozen eggs of N. ery- 

 throcephalus were found partially hidden under a strip of bark 

 that had been torn loose at one end. They were I mm. in 

 length, roughly oblong-ovate in form, white in color and were 

 attached to the wood by one end. A week later the eggs ap- 

 peared to be developing and had assumed an iridescent appear- 

 ance with a brownish spot, evidently the head of the develop- 

 ing larva, showing at one extremity. 



All the eggs had hatched on 6th February, nine days after 

 deposition. 



On T4th February a female Xylotrechus colomis Fab. emerg- 

 ed, this making the third species secured from the stick. Up 

 to this time the beetles that had emerged numbered thirteen. 



Sometimes a number of N. erythrocephalus were kept alive 

 in the jar for several days and. after the cotton in the bottom 

 of the jar had been moistened, the beetles would come to it and 

 chew some of the fine strands evidently for the purpose of ex- 

 tracting the water. 



