azr. 1, MOSQUITOES OF THE UNITED STATES—DYAR. 9 
Jamesia CHRISTOPHERS, Sci. Mem. Med. Ind., new ser., No. 25, p. 12, 1906. 
Culiciomyia THEOBALD, Mon. Culic., vol. 4, p. 227, 1907. 
Aporoculer THEOBALD, Mon, Culic., vol. 4, p. 150, 1907. 
Pseudoculexr THEOBALD, Mon. Culic., vol. 4, p. 318, 1907. 
Leucomyia THEOBALD, Mon. Culic., vol. 4, p. 372, 1907. 
Microculee THEOBALD, Mon. Culic., vol. 4, p. 461, 1907. 
Oculeomyia THEOBALD, Mon. Culic., vol. 4, p. 515, 1907. 
Neomelanoconion NEWSTEAD, Dutton, and Topp, Ann. Trop. Med. Par., 
vol. 1, p. 31, 1907. 
Pectinopalpus THroBALD, Ann. Mag. Nat. Hist., ser. 8, vol. 5, p. 875, 1910. 
Eumelanomyia THEOBALD, Mon. Culic., vol. 5, p. 114, 1910. 
Phalangomyia Dyar and Kwnas, Ins. Ins. Mens., vol. 2, p. 58, 1914. 
Climacura Howarb, Dyar, and Knap, Mosq. N. & Cent. Am. & W. I., vol. 8, 
p. 452, 1915. 
Transculicia Dyar, Ins. Ins. Mens., vol. 5, p. 184, 1917. 
Cacoculer Dyar, Ins. Ins. Mens., vol. 6, p. 100, 1918. 
Choeroporpa Dyar, Ins. Ins. Mens., vol. 6, p. 108, 1918. 
Helcoporpa Dyak, Ins. Ins. Mens., vol. 6, p. 125, 1918. 
Eubonnea Dyar, Ins. Ins. Mens., vol. 7, p. 150, 1919. 
Barraudius Epwarps, Bull. Ent. Res., vol. 12, p. 332, 1921. 
A genus of world-wide distribution, especially strong in the 
Tropics and warmer temperate regions, but few species extending 
far north. The larvae inhabit water of a permanent nature, some 
species taking kindly to water in artificial containers. Such species 
are liable to be abundant and troublesome in cities, and take on a 
semidomesticated nature. Many species habitually transmit blood 
diseases of birds and animals, but they do not play an important 
role in human diseases. Several transmit Filaria. 
The subgenera occurring in the United States separate as follows 
on the characters of the male genitalia: 
1. Tenth sternites few toothed__Subgenus Climacura Howard, Dyar, and Knab. 
Tenth sternitest tulitedswithwspines me 26 ee Base hte Be he Fe Zs 
Tenth, sternites: flattened. compas iva cc es eS ee 3. 
2. Mescsome simple, one plate with a bridge_________ Subgenus Neoculex Dyar. 
Mesosome with complex series of plates__-----~~_ Subgenus Culex Linnaeus. 
os Claspersimple, uniform 22 22 Subgenus Melancconion Theobald, 
Clasperamodifieds enlace cf itil ee ae 4, 
4. Clasper elongated, with snout-like termination__Subgenus Choeroporpa Dyar, 
Clasper bluntly rounded, with subspherical tip. 
Subgenus Mochlostyrax Dyar and Knab. 
KEY TO THE UNITED STATES SPECIES OF CULEX. 
1 Ee TONOSCISMWilterlineeGe tm th Gv elie eae esse ume e heel ee eee ee on 
Proboscis not, or nor completely white-ringed___________________-__-___ 4, 
Aw VHICesrineSOtetheLtarsinh toa Ga. 2. 2s ee see ee 3. 
WhitecingstoL- the tarsi marrow. s. 22. es cormiger ‘Theobald. 
ew ree ena thriambus Dyar. 
3. Femora and tibia with a fine white line on outer side__~_tarsalis Coquillett. 
These-parts: black? onvouter sides =. see ese ea stigmatosoma Dyar. 
