88 ENTOMOLOGICAL NEWS. [April 



there would be many trees killed ; for often more than 200 

 adults issue from a single infested trunk. In the case of the 

 tree I have examined, it is probably not the presence of the 

 larvae that have killed it as they have not apparently pene- 

 trated deeply into the interior and their galleries are not suffi- 

 ciently numerous to seriously impede the circulation of the 

 sap, even in the outer portion of the trunk. 



I feel highly elated at having discovered a living brood, and 

 I think there is no doubt that Dr. Murray will be able to secure 

 living specimens of the imago. It is so difficult to cut out 

 large or small chunks of the wood without injuring the larvae 

 that I have not thought it advisable to secure any in this way. 



PALM SPRINGS, GALA., March 13, 1897. 



On March 5 I made a serious expedition with a wagon and 

 mules and an Indian to help, to Palm canon where I spent the 

 day getting out more pieces of palm wood containing Dinapate 

 larvae. I secured four pieces weighing each from 2 or 3 to 6 

 or 8 Ibs., and each containieg one or two living larvae. The 

 largest piece undoubtedly contains several of the larvae. These 

 pieces I now have in my bedroom and I can occasionally hear 

 the larvae cutting the fibre with a snap like a pair of shears. 



I discovered much to my surprise that the interior of the 

 palm trunk is entirely filled with galleries. I had before 

 concluded that all the work had been done nearer the sur- 

 face, the trunk being an extra thick one. I find however 

 that this trunk like all the rest, has the interior entirely rid- 

 dled with burrows and very little solid wood left by the larva-. 

 Many of the larvae are still in the interior, although some of 

 them are already forming cells near the exterior. AVe cut 

 into a great many of the grubs in getting out these chunks of 

 wood, and I secured several good additional specimens in 

 alcohol . 



It is hard to realize the enormous extent and dimensions of 

 the Dinapate galleries. Not the largest of our Florida 

 palmettos could support more than three or four of these 

 larvae; they would eat it all up and then die of starvation. 

 If there are 20 or 30 holes in one of the \Vashingtonia palms, 

 one finds the interior entirely eaten out from end to end, and 

 one can follow the galleries, over one inch in diameter for 20 



