Entomological 

 Supplies and 

 Specimens 



Write for illustrated price 

 lists and information to 



THE KNY-SCHEERER CORPORATION 



Department of Natural Science, 



404-410 W. 27th St., New York, N. Y. 



Save Your Trees 



It takes a lifetime to grow a fine shade 

 tree. A colony of leaf-eating insects can 

 destroy it in one season. 



Tree Tanglefoot will effectually protect 

 shade and fruit trees from most of our des- 

 tructive insect pests, i. e.: 



Canker worms. Tussock moths. Climbing 

 cut worms. Brown-tail moths. Woolly aphis, 

 Gypsy moths. Ants. 



One application stays sticky three months 

 and longer, outlasting ten to twenty times 

 any other substance. Easily applied with 

 a wooden pad die. One pound makes about 

 ten lineal feet of band. It will not soften, 

 run or melt, yet it is always elastic, ex- 

 panding with growth of tree. Effective 

 rain or shine. Needs no mixing, used exactly 

 as bought. 



Endorsed by prominent Park and Ceme- 

 tery Superintendents. 



FOR TREE SURGERY 



Superior to anything on the market. It 

 is the best application after pruning or trim- 

 ming. It will water-proof crotch, cavity or 

 wound when nothing else will. 



1 rtt'i oil uil wti t iaved by 1 ree 1 angiefoot 

 Sold generally by Seedsmen. 

 Price: 1 lb. cans, Snc; 3 lb. cans, $1.45; 10 

 lb. cans, $4.50; 20 lb. cans. $8.75; 25 lb. 

 wooden pails, $10.50. 



Write for free illustrated booklet on leaf-eating insects 

 THE O. & W. THUM COMPANY, 163 Straight Avenue, Grand Rapids, Mich. 

 Manufacturers of Tanglefoot Fly Paper and Tree Tanglefoot (122) 



Now Ready 



THE COCCIDAE: 



Tables for the Identification of the Subfamilies of some of the 

 more Important Genera and Species together with Discussions 

 of their Anatomy and Life History. 



Alex D. MacGillivray, Ph.D. 



Professor of Systematic Entomology in the University of Illinois. 



Includes comprehensive discussion of each subfamily and tribe 



8mo. Cloth. IX +502 pp. $6.00 net. 

 Sent prepaid on receipt of price. Order direct from publisher, 

 SCARAB COMPANY, 603 Michigan Ave., Urbana, Illinois. 



Please mention the Journal of Economic Entomology when writing to advertisers 



