98 
Psyche 
[June 
THE MALE GENITAL TUBE OF THE AMPHIZOID^ 1 
When Sharp and Muir (12) prepared their work on “The 
Anatomy of The Male Genital Tube in the Coleoptera” they 
were unable to procure specimens of the family Amphizoidae. 
Since this family is one of the intermediate groups between the 
Carabidae and the Hydrophilidae, figures of the aedoeagus will be 
Fig. 1 — Aedoeagus of Amphizoa insolens Lee. from a lateral view; 2 ,8edoeagus of Amphizoa 
lecontei Matth. same view; 3, aedoeagus of Amphizoa striata Van Dyke. 
of interest. The material was collected by Mr. P. J. Darlington 
during the summer of 1927. It includes the three species known 
from the Western United States, Amphizoa insolens Lee., A. 
lecontei Matth., and A. striata Van Dyke. 
The aedoeagus of Amphizoa is closely related to that of 
Pelobiidae and Halipidae. The median lobe (ML) is a simple 
Contribution from the Entomological Laboratory of the Bussey Institu- 
tion, Harvard University, No. 294. 
By J. W. Wilson 
