246 MOSQUITOES OF NOETH AMERICA 



Busck found them in pools and edges of streams, a swamp, hollow tree, a banana- 

 stump, a barrel, a wash-tub, and old tin cans ; Mr. Jennings got them in the edges 

 of streams, swamps, and reservoir, in a hoUow banana-stump, and hole in a 

 " cedar " stump, in an old kettle, and an old tin, in a pool of salt water, and in a 

 crab-hole. According to Dr. A. Lutz the female adult does not suck blood, and 

 lacks the mandibles. 



Mexico, Central America, the Antilles, southern Florida, Trinidad, and South 

 America to Brazil. 



Orizaba, Mexico, March 31, 1908 (F. Knab) ; C6rdoba, Mexico, June 10, 1905 

 (P. Knab) ; Santa Lucrecia, Mexico, June 19, 1905 (F. Knab) ; Eincon An- 

 tonio, Mexico, June 33, 1905 (F. Knab) ; Tehuantepee, Mexico, July 3, 1905 

 (F. Knab) ; Almoloya, State of Oaxaca, Mexico, July 21, 1905 (F. Knab) ; 

 " Las Loras," near Puntarenas, Costa Kica, September 9, 1905 (F. Knab) ; 

 Knights Key, Florida, December 3, 1908 (W. H. Sligh) ; Havana, Cuba, De- 

 cember 6, 1908 (W. H. Sligh) ; Kingston, Jamaica (M. Grabham) ; Santo 

 Domingo, August 23, 1905 (A. Busck) ; Arima, Trinidad (F. W. Urich) ; Pedro 

 Miguel, Canal Zone, Panama, April 34, 1907 (A. Busck) ; Tabemilla, Canal 

 Zone, Panama, April 37, 1907 (A. Busck) ; Las Cascadas, Canal Zone, Panama, 

 May 15, 1907 (A. Busck) ; Gatun, Canal Zone, Panama, June 8, 1907 (A. 

 Busck) ; Ahorca Lagarto, Canal Zone, Panama, June 13, 1907 (A. Busck) ; 

 Lion Hill, Canal Zone, Panama, July 36, 1907 (A. Busck) ; Pedro Miguel, 

 Canal Zone, Panama, November 19, 1907 (A. H. Jennings) ; Corozal, Canal 

 Zone, Panama, November 30, 1907 (A. H. Jennings) ; Panama City, Panama, 

 December 3, 1907 (A. H. Jennings) ; Miraflores, Canal Zone, Panama, De- 

 cember 10, 1907 (A. H. Jennings) ; Bas Obispo, Canal Zone, Panama, De- 

 cember 13, 1907 (A. H. Jennings) ; Eio Grande, Canal Zone, Panama, Decem- 

 ber 14, 1907 (A. H. Jennings) ; Empire, Canal Zone, Panama, December 30, 



1907 (A. H. Jennings) ; Caldera Island, Porto BeUo Bay, Panama, January 19, 



1908 (A. H. Jennings) ; Paraiso, Canal Zone, Panama, February 25, 1908 (A. 

 H. Jennings) ; Culebra, Canal Zone, Panama, April 3, 1908 (A. H. Jennings) ; 

 Cascajal Eiver, Panama, May 30, 1908 (A. H. Jennings) ; Gatun, Canal Zone, 

 Panama, June 23, 1908 (A. H. Jennings) ; Aneon, Canal Zone, Panama, August 

 9, 1908 (A. H. Jennings). 



Eeported also from Sao Paulo, Brazil (Theobald) ; Eio de Janeiro, Brazil 

 (Peryassti) ; Bahia, Brazil (Lutz) ; State of Minas Geraes, Brazil (Peryassu). 



Oulex corniger is a very variable species ; we recognize four forms that are 

 worthy of varietal names. All of the species of Culex are more or less variable 

 in the adult characters, but this one is the most so of any with which we are 

 familiar. The larvae, however, are very constant, and are without any close 

 allies. The description of Culex hasUicus, referred to the synonymy above, is 

 due to an error of observation, the hairs on the air-tube of the specimens under 

 observation having become united in pairs. These same specimens, reexamined 

 at a later date, show the ordinary four-haired condition. The original condition 

 was due to some peculiarity in the fluid in which the skins had been preserved, 

 and disappeared when the vials were refilled. We are able to make use of nearly 

 all the other names proposed to designate the varieties. The genus Tricho- 

 pronomyia was founded upon the presence in the male of a tuft of hairs upon 

 the proboscis near its middle. This is probably always present in Culex corniger, 

 but it is seldom evident, as it is a delicate structure, easily abraded, and more- 

 over not always erected in a conspicuous manner, even when present. We were 

 obliged to examine a number of specimens before noting its presence. We have 

 seen the structure in other species of Culex; it clearly has no generic value and is 

 even unreliable as a specific character, owing to its deciduousness. 



