746 



A. E. Verrill — The Bermuda Islands. 



Gray Mosquito ; Culex fatigans Wied. = C. pungens Howard. 



Figures 95, b ; 96 : 97 ; 98. 



This has been identified by Theobald (Monog. Culicida?, i, p. 28, 

 fig. 16 ; ii, p. 151, pi. xxix, figs. 114, 115) as found here, from col- 

 lections made in July, 1899, by Dr. Eldon Harvey. 



Figure 96. — Culex fatigans ; wing from a Bermuda specimen; after Theobald. 



This very objectionable species* belongs to the section of Culex in 

 which the proboscis is not banded; legs neither banded nor spotted; 



97 98 



Figure 97. — Culex fatigans; male; x 4. Figure 98. — female. Figure 99. — Yellow- 

 fever Mosquito (Stegomyia fasciata) ; male ; x 4. Figure 100. — The same ; 

 female ; x 4 times ; after Theobald. 



abdomen with light bands at the bases of the segments; thorax with 

 dark lines. 



Head and thorax deep brown ; thorax with two or three dusky 

 longitudinal lines, and bearing golden brown, narrow, curved scales, 



* It is known that in many tropical countries this species conveys the germs 

 of the blood-infecting nematode worm (Filaria Banerofti), which produces the 

 fatal disease called Filariasis of man. Whether this disease has been known in 

 Bermuda I do not know, but it might easily be introduced there by infected 

 sailors or soldiers from other countries by the aid of mosquitoes of this species. 

 A similar disease in dogs, caused by Filaria immitis, is transmitted, also, from 

 dog to dog, by species of Culex, hence it has been called the Filaria-bearing 

 Mosquito. The C. fatigans has been found, also, to be one of the species that 

 transmits the blood-parasite of birds, analogous to the malaria-parasite of man, 

 but not the latter. 



