BOSTON ZOOLOGICAL SOCIETY. 35 



West Roxbury, May IT, 187(S. Deaiie, Bull. 

 Nuttall Club, III, (1878) p. 188. 

 Dendrceca palmarum palmarum: Brookline, middle of 

 October, 1878. Deane, Bull. Nuttall Club, 

 IV, (1879) p. (U). 



Note: Wrongly given as hifpochry^ea. 

 Cambridge, September 18, 1880. Spelman, 

 Bull. Nuttall Club, YII, (1882) p. 54. 

 Belmont, September 7, 1881. Spelman, 

 Bull Nuttall Club, Vll, (1882) p. 54. 



HABITS AND TRANSFORMATIONS OF BOLITO- 

 THERUS BIFURCUS FAB. 



By R. Hayujard. 



During the past summer (1881) I had an excellent op- 

 portunity to study the habits of this interesting species. 

 I was passing a few weeks at Underhill, Chittenden County, 

 Vt., where most of my observations were made. 



Bolitotlieriis blfurcns is far more abundant in the north- 

 ern than in the southern portions of New England. It feeds 

 almost if not exclusively upon the fungus of the birch, 

 which in most cases, I believe, proves faUii to the tree. I 

 have never seen the eggf^, but have good reason to suppose 

 that they are deposited by the iemales on the outside of the 

 fungus and that the young larvae hatched from the eggs 

 thus laid, immediately eat their way into the heart of the 

 fungus. The hole made by their inward progress is black, 

 looking much as though it had been burnt, and is generally 

 partially tilled with the insects' castings. The lull grow^n 



