Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXXIX. No. 4. 



ILLUSTRATIONS OF ODONATA : — ARGIA. 



By Hermann A. Hagen. 



WITH A LIST AND BIBLIOGRAPHY OF THE SPECIES. 



By Philip P. Calvert. 



With Two Plates. 



CAMBRIDGE, MASS., U.S.A.: 



PRINTED FOR THE MUSEUM. 



November, 1902. 



