108 Bulletin of the Brooklyn Entomological Society Vol. XII 



was back again, determined to search the neighboring canyons 

 which contain palms. This was carried out, but in Andreas and 

 Murray canyons I saw no dead palms of any description and was 

 obliged to force myself through thorny brush and cactus, over 

 fallen trees, just as Hubbard had done eleven years earlier. 



Finally I returned to Palm Canyon and examined all of the 

 bare fallen trunks of which I had noted several in my previous 

 search. It is not an easy matter to chop into one of these palm 

 trunks even when they have been dead for years, but I worked 

 two days at it without success and was about to despair when a 

 stroke of my axe turned out a larva about three fourths of an 

 inch in length which I thought might be that of Dinapate. By 

 placing my ear against the log and keeping very still I could hear 

 others gnawing away inside with a click like that produced by 

 snapping the nails of the thumb and first finger together. How- 

 ever, it was clear that if this was the larva of Dinapate it must 

 grow at least a year before it would be as large as that described 

 by Horn, so I decided to wait until the following spring before 

 carrying out the plan which I had in mind. 



This last spring (1917), I again went to Palm Canyon, sawed 

 out of the prostrate trunk four two-and-a-half-foot lengths, 

 taking them where the gnawing sounded most frequent and 

 packed them out to my automobile, a distance of about two miles. 

 Another section of this log was later obtained by Mr. J. R. 

 Campbell, of the U. S. Bureau of Entomology. A week's fur- 

 ther search of the various groups of palms failed to show any 

 other possible host tree. In sawing the log into transportable 

 lengths the saw disclosed several larvae in the various cuts, two 

 of which it bisected. The ones which were uncovered but not 

 cut soon bored their way into the log and out of sight. However 

 I was much surprised to find that there were evidently two 

 separate broods of larvae in the log, one apparently full grown 

 and ready to pupate as shown by the presence of one pupa, the 

 others about three fourths of an inch long. I am convinced that 

 the larvae seen last year are the ones now full grown and that 

 the smaller specimens represent a brood deposited since the dis- 

 covery of the log. 



This log when discovered was full of sap and showed every 



