8 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
marshes along the shore. Three genera were formed on the modifica- 
tions of the antennae and the presence or absence of setae on the me- 
tanotum; but it seems best to consider these subdivisions as of only 
subgeneric rank. A single species occurs in southern Florida, which 
belongs to Deinocerites proper. 
The water remains permanently in the holes of the crab, and the 
adult mosquitoes rest in the upper dry part of the hole. It has been 
surmised that the peculiar long antennae of the mosquito is an adap- 
tation to present a large sensory surface so that the individuals can 
detect the approach of the crab in time to fly out of the hole before 
being overwhelmed in the water by the inrush of the crustacean. 
DEINOCERITES (DEINOCERITES) CANCER Theobald. 
Deinocerites cancer THEOBALD, Mon. Culic., vol. 2, p. 215, 1901. 
Brachiomyia magna THEOBALD, Mon. Culic., vol. 2, p. 844, 1901. 
A rather large blackish mosquito, entirely dark, venter dull brown. 
Abdomen blunt, but the cerci stout and prominent in the female, the 
male claspers large. Mesonotum coarsely hairy. Pleurae dark 
brown, the incisions testaceous. 
The larvae inhabit crab holes near the sea, generally filled with 
brackish water. No exact observations on the life history are of rec- 
ord. The species is not known to bite. 
Distribution—Littoral of the Greater Antilles and southern 
Florida. 
United States Records. 
FiLorma: Miami, May 23, 1905 (Dyar and Caudell). 
Miami, October 3, 192] (¢G. F. Moznette). 
Genus CULEX Linnaeus. 
Culer LINNAEUS, Syst. Nat., ed. 10, p. 602, 1758. 
Lutzia THEOBALD, Mon. Culic., vol. 8, p. 155, 1903. 
Melanoconops THEOBALD, Mon. Culic., vol. 3, p. 178, 1903. 
Lasioconops THEOBALD, Mon. Culic., vol. 8, p. 235, 1903. 
Melanoconion THEOBALD, Mon. Culic., vol. 3, p. 238, 1903. 
Heptaphlebomyia THEOBALD, Mon. Culic., vol. 3, p. 336, 1903. 
Aédinus Lutz, in Bourroul, Mosq. do Brasil, p. 54, 1904. 
Neoculex Dyar, Proc. Ent. Soc. Wash., vol. 7, p. 45, 1905. 
Tinolestes CoQUILLETT, Proc. Ent. Soc. Wash., vol. 7, p. 185, 1905. 
Micraédes Coquittett, Proc. Ent. Soc. Wash., vol. 7, p. 185, 1905. 
Gnophodeomyia THEOBALD, Journ. Econ. Biol., vol 1., p. 21, 1905. 
Trichopronomyia THEOBALD, Ann. Nat. Mus. Hung., vol. 3, p. 98, 1905. 
Carrollia Lutz, Imp. Med., p. 81, 1905. 
Pseudoheptaphlebomyia VENTRILLON, Bull. Mus. Nat. Hist., Paris, p. 427, 
1905. 
Isostomyia Coquittert, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, p. 16, 
1906. 
Mochlostyrar Dyar and Knap, Journ. N. Y. Ent. Soc., vol. 14, p. 233, 1906. 
