578 MOSQUITOES OF NORTH AMERICA 



Dr. T. D. Berry collected the larvae in a puddle two days after a rain ; pupae 

 were formed on the fourth day and images on the fifth. 



Southwestern United States and northern Mexico, principally in dry regions. 



Laredo, Texas (T. D. Berry) ; Austin, Texas, August 10, 1908 (A. W. Mor- 

 rill) ; Mesilla, New Mexico, October 4 and 11, 1893 (T. D. A. Cockerell) ; 

 Monterey, Mexico (J. Goldberger). 



Psorophora signipennis has come to hand in but few specimens, mostly in 

 poor condition. The ornamentation of the mesonotum appears to be somewhat 

 variable, some specimens showing a broad median stripe of brownish golden 

 scales. 



PSOROPHORA DISCOLOR (Coquillett). 



Culex discolor Coquillett, Can. Ent., xxxv, 256, 1903. 



Culex discolor Smith, Ent. News, xv, 147, 1904. 



Culex discolor Dyar, Journ. N. Y. Ent. Soc, xli, 173, 1904. 



Culex discolor Felt, Bull. 79, N. Y. State Mus., 297, 1904. 



Orabhamia discolor Felt, Bull. 79, N. Y. State Mus., 3916, 1904. 



Gulex discolor Smith, N. J. Agr. Exp. Stat, Bull. 171, 37, 1904. 



Culex discolor Smith, N. J. Agr. Exp. Sta., Rept. Mosq., 193, 1905. 



Orahhamia discolor Felt, Bull. 97, N. Y. State Mus., 472, 1905. 



Feltidia discolor Dyar, Joum. N. Y. Ent. Soc, xiii, 108, 1905. 



Oeratocystia discolor Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 183, 1906. 



Orabltamia discolor Dyar, U. S. Dept. Agr., Bur. Ent., Circular 72, 3, 1906. 



Orabhamia discolor Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 21, 1906. 



Oulex discolor Howard, Osier's Modern Medicine, i, 377, 1907. 



Orabhamia discolor Theobald, Mon. Culicid., iv, 309, 1907. 



Culex (Orabhamia) discolor Viereck, 1st Ann. Rept. Comm. Health Pa., 471, 1908. 



Aedes discolor Thlbault, Proc. Ent. Soc. Wash., xii, 16, 1910. 



Orabhamia discolor Theobald, Mon. Culic, v, 284, 1910. 



Aedes discolor Morse, Ann. Rept. N. J. State Mus., 1909, 717, 1910. 



Obiginai. Desceiption of Culex discolor : 



Female. Differs from the above description of nanus as follows: palpi with a 

 cluster of white scales at the apices, upright scales of occiput yellow, whitish cross- 

 bands of abdomen prolonged forward in the middle, crossing or almost crossing the 

 segments, scales on posterior side of front and middle tibiae and on anterior side 

 of the hind ones almost wholly pale yellow, first tarsal joint bearing many yellow 

 scales, black and yellow scales of wings not evenly distributed, the black ones form- 

 ing a distinct spot at forking of the second vein with the third, another on upper 

 branch of fifth vein at the hind cross-vein, and a third on the apical third of the last 

 vein, remaining scales of this vein wholly yellow; length 4 mm. A specimen from 

 Delair, New Jersey, received from Prof. J. B. Smith. 



Type. — ^No. 6894, U. S. National Museum. 



Desceiption of Female, Male, and Larva of Psokophoea discolor: 



Female. — Proboscis subcylindrical, moderate, uniform, nearly straight, rather 

 short, labellae conically tapered ; vestiture of small dense scales, black on apical 

 and basal fourths, central half yellowish white ; setae very small, curved, black, 

 those on labellae more prominently outstanding. Palpi about one-fourth as 

 long as proboscis, stout, covered with pale and dark scales intermixed; tips 

 silver scaled; setae short, stiff, black. Antennae moderate, rather short, joints 

 subequal, basal ones short, especially the third, fourth and fifth, pilose, rugose, 

 blackish; tori subspherical, with a cup-shaped apical excavation, rather pale 

 brown, with a crest of pale scales ; hairs of whorls short, brown. Clypeus ellip- 

 tical, convex, brown, nude. Eyes purplish black. Occiput convex, narrow, 

 black, densely clothed with narrow, curved golden scales, most conspicuous 

 mesially and bordering the eyes, and slender upright forked luteous ones which 

 are most numerous on the nape ; bristles along margins of eyes mostly pale. 



Prothoracic lobes moderate, remote dorsally, blackish, with a few narrow 

 golden scales and dark bristles. Mesonotum brownish, two dorsal lines rather 

 strongly impressed and darker colored ; vestiture of small, narrow, curved golden 



