CULICID^: CULICALES, MEGALORRHINI, ETC. 107 



among the sickles. Female palpi nearly one-third the length of the 

 proboscis, i species ; Brazil. 



Catageomyia, Theobald. Some sickles on the nape ; scutellum with 

 some squames as well as sickles, i species ; Africa. 



Boycia, Newstead. A sagittal band or median patch of sickles 

 somewhat obscured by darts. Squames of the head rather loose-set. 

 Scutellum with sickles only. Proboscis swollen at tip. i species ; 

 Tropical Africa. 



Genera and Species o/"Culicales of Special Importance. 

 CULEX, Linn. (Lat. C?^/^;tr=gnat). 



Head covered with " narrow curved " and " upright forked " 

 scales on its dorsal surface, and with flat, imbricating scales 

 on its sides. Scutellum covered with " narrow curved " 

 scales. Palpi long in the male, short in the female. Wings 

 with long slender " lateral " scales on the veins. 



The species, which are numerous, are found in every part 

 of the world ; many of them are domestic, and breed in 

 water-butts, drains, and temporary collections of house and 

 rain water. 



Culex mimeticus, Noe, which has been found in Southern 

 Europe, Cyprus, India, Ceylon, the Malay States, and China, 

 has the costa marked with three yellow spots like certain 

 species of Anopheles. 



Culex fatigaits, Wiedemann, is one of the chief transmitters 

 of the larva of Filaria bancrofti, and has been said also to 

 carry the micrococcus of dengue. 



Culex fatigans, Wiedemann, 



is extremely like the common gnat {Culex pipiens, L.) of 

 northern latitudes. It has been found in almost all the 

 populous parts of the world between 40° N. and 40° S., and is 

 one of the commonest house-haunting mosquitoes of the 

 tropics. It is a brown mosquito with a broad white or 

 pale yellow cross-band on every abdominal segment : the 

 ventral surface of the abdomen, and the coxae and the basal 

 parts of the femora are pale, and except for a small pale 

 spot (" knee-spot ") at the tip of the femora (and sometimes 

 also at the tip of the tibiae), the legs are plain brown in the 

 rest of their extent. 



