BOSTON ZOOLOGICAL SOCIETY. 45 



month's time. So it can readily be judged how rare they 

 are even in their own stronghold, and I am confident that 

 their final extinction is a mere matter of time. 



In October and November while the ^-Ivory-bills'' are 

 moulting they retreat to the densest portions of the forest, 

 but later in the season they wander more. Their cries, 

 which differ from those of the Pileated Woodj)ecker, are 

 loud and clear and may be easily recognized. 



The eggs of the Ivory-billed, which I have seen, are 

 enough larger than those of any other species to be at once 

 recoscnized. 



NOTES ON COLLECTING CERTAIN BUFRES- 



TID.E. 



Btj E. P. Austin. 



The species of Biijorestidce are great flivorites with col- 

 lectors owing to the bright colors of many species. All, or 

 nearly all, the species are wood-borers and many are injuri- 

 ous to timber and fruit trees. 



The Buprestids as a rule are found most abundantly in 

 hot weather and are very active fliers. If surprised too 

 suddenly to enable them to escape by flight, they drop to 

 the ground and Irequently escape in that manner. Among 

 the smaller the species Agrili are worthy of especial atten- 

 tion, as the species are numerous and individuals abound. 

 They may be taken in numbers after the middle of June, 

 feeding or resting on the leaves of various shrubs and trees. 

 The smaller species resemble each other very closely, and 

 have not yet been satisfactorily studied. Each species of 

 plant is likely to have a different species of Agrili/s. Oaks, 



