AMEEICAN SPIDEES 



THEIR SPIJSTNINGWORK. 



A NATURAL HISTORY 



OP THE 



ORBWEAVING SPIDERS OF THE UNITED STATES 



WITH SPECIAL REGARD TO THEIR INDUSTRY AND HABITS. 



-0- 



BY 



HENRY O. McOOOK, D. D., 



VICE-PRESIDENT op THE ACADEMY OF NATURAL SCIENCES op PHILADELPHIA; 

 PROPESSOR OP ENTOMOLOGY IN TIIK PENNSYLVANIA 



HORTICULTURAL SOCIETY. \ 



VOL. III. 



WITH DESCRIPTIONS OF ORBWEAVING SPECIES AND PLATES. 



PUBLISHED BY THE AUTHOR, 



ACADEMY OP NATURAL SCIENCES OP PHILADELPHIA, 



A. D. 1893. 



