Bulletin of the Museum of Comparative Zoology 
AT HARVARD COLLEGE, 
Vor. XXVII. No. 1. 
SPERMATOGENESIS OF CALOPTENUS FEMUR-RUBRUM 
AND CICADA TIBICEN. 
Bx E. V. Wircox. 
Wiru Five PLATES, 
CAMBRIDGE, MASS., U.S.A.: 
PRINTED FOR THE MUSEUM. 
May, 1895. 
