I 



Dec, 1907.] Dyar & Knae : Mosquitoes from Canal Zone. 



197 



26 (12) in the middle of the afternoon. A female captured on May 

 24, 11:30 A. M., and confined in the laboratory, and another one 

 mating with a male, captured at 5 P. M., May 26, and similarly con- 

 fined deposited eggs as follows : 



Female No. i died at about noon, June 21. The second pair died 

 on June 22 ; they were observed mating on May 30, June 4, 5, 9, 10 

 and 12. 



The eight adults emerging June 21-23 (Table II) were confined 

 together in a large glass jar and supplied abundantly with food. They 

 did not begin to mate until June 28, when one pair was observed ; 

 another pair was observed mating on July 5, and both of them were 

 isolated. The first pair produced 37 eggs and then escaped on July 

 8. They mated again on July 2 and 7. The second pair produced 

 no eggs and died for lack of food about July 12. They had mated 

 a second time on July 6. 



Class I, HEXAPODA. 



Order IV, DIPTERA. 



DESCRIPTIONS OF NEW MOSQUITOES FROM THE 

 PANAMA CANAL ZONE. 



By Harrison G. Dyar and Frederick Knab, 

 Washington, D. C. 



Our knowledge of the mosquito fauna of the Isthmus of Panama 

 has heretofore amounted to practically nothing, but thanks to the col- 

 lections recently made by Mr. August Busck, is now decidedly im- 

 proved. Mr. Busck went to the Isthmus at the invitation of Dr. W. 



