Bulletin of the Museum of Comparative Zoology 
AT HARVARD COLLEGE. 
VOL; XOGXITX. , No. '4: 
ILLUSTRATIONS OF ODONATA:— ARGIA. 
By HermMANN A. HAGEN. 
WITH A LIST AND BIBLIOGRAPHY OF THE SPECIES. 
By Puivie P. Catvert. 
Witrn Two PuATEs. 
CAMBRIDGE, MASS., U.S.A.: 
PRINTED FOR THE MUSEUM. 
NoveMBER, 1902. 
