17G 
Prof. Snow’s experiments. A classified list of entomophytes of the 
families Hypocreacem and Entomophthoracese is given, with three 
plates of illustrations. 
Webster, F. M.—The Economic Value of Parasitism. (Twenty- 
fifth Ann. Rep. Ent. Soc. Ont, p. 53.) 
A brief discussion of the general subject of the parasitism of 
insects. Fntomophihora sphcerosperma said to have saved the hay 
crop in Ohio in 1804 by completely checking an enormous out¬ 
break of the clover-leaf weevil (Phytonomus punctatus). Parasites 
when not numerically strong must be assisted in their work by 
insecticides; and entomologists must learn to detect the exceptional 
cases where parasites are likely to fail in overcoming a destructive 
insect, and by artificial methods supplement their lack of numbers. 
