238 MOSQUITOES OF NORTH AMEEICA 



head-hairs all multiple, rather long. Body with the skin glabrous ; lateral ab- 

 dominal hairs in threes after the second segment; comb of eighth segment of 

 many spines in a patch. Air-tube about five times as long as wide, tapering 

 outwardly, the terminal hooks minute; pecten reaching somewhat over the 

 basal third, of about twelve small teeth; five many-haired tufts on posterior 

 aspect, the basal one well within the pecten, the subapical one moved laterally 

 out of line with the others. Anal segment a little longer than wide, ringed by 

 the plate; dorsal tuft of three hairs of different lengths on each side; lateral 

 hair small, double; ventral brush confined by the ehitinous ring. Anal gills 

 about as long as the segment, their tips bluntly rounded, all four of equal lei^h. 



The larvae inhabit stagnant pools, such as occur in the beds of streams that 

 have ceased to flow in the dry season. This is probably their natural habitat, 

 but they take readily to artificial receptacles, such as rain-water barrels, and have 

 doubtless increased in numbers since the advent of man. The eggs are deposited 

 in rafts and the species continues to breed as long as conditions are suitable. 

 The rainy season is probably passed in the adult state and also that part of the 

 dry season after the pools have evaporated. 



Southern Oregon, Califomia, probably also in northern Mexico. 



Pasadena, California, larvae in a pond in a lawn (H. G. Dyax) ; Laguna, Cali- 

 fomia, larvae in a well-hole by the edge of a lake (H. Gr. Dyar) ; San Di^o, 

 Califomia, larvae in an old water-vat (H. 6. Dyar) ; Sweetwater Junction, 

 Califomia, larvae in pools in a stream-bed (H. G. Dyar) ; San Luis Obispo, Cali- 

 fomia, larvae in a pool in a rocky canyon ( A. N^. Caudell) ; Avalon, CaJif omia, 

 larvae in a water-barrel (H. G. Dyax) ; Chico, Califomia, larvae in a horse- 

 trough (A. F. Caudell) ; Klamath Palls, Oregon, adult captured (Dyar & 

 CaudeU). 



Culex stigmatosoma has been confounded with Culex tarsalis. We have some 

 specimens from Guatemala, collected by Dr. G. Bisen, that much resemble Oulex 

 stigmatosoma; but their condition is such that we can not make satisfactory 

 determination and the larvaa also are unknown to us. 



CULEX EUMIMETES Dyar & Knab. 



Culex eumimetes Dyar & ESiab, Proc. U. S. Nat. Mus., xxxv, 61, 1908. 

 Culex eumimetes Theobald, Mon. Culic, v, 616, 1910. 



Oeiginai Desceiption oir CtrLEX eumimetes : 



Female. — Proboscis moderately long and slender, not swollen at the tip, black- 

 scaled, a rather broad white ring at the middle; palpi slender, black-scaled, the apices 

 white-scaled; occiput clothed with brownish scales with brassy luster; eyes nar- 

 rowly margined with silvery white, much broadened at the sides; mesonotum bright 

 brown-scaled with brilliant bronzy luster and with traces of pale shining scales along 

 the margins and around the antescutellar bare space; mesially there are two sub- 

 dorsal spots of pale scales; scutellum pale-scaled; abdomen depressed, dull black- 

 scaled, the segments with rather narrow basal white bands; venter pale-scaled, with 

 obscure apical dark bands; wings with the scales along the veins dark, long and 

 very narrow; legs black; femora with the under surface white-scaled; knees nar- 

 rowly white-scaled; apices of the tibiae white-scaled, the Inner side of the tibiae and 

 tarsi with a line of pale scales; tarsi of all the legs white-ringed at both ends of the 

 joints, the rings very broad on the hind legs, the last tarsal joint of the hind legs 

 white with a small black ring; claws simple. Liength, 3.5 mm. 



Male. — Proboscis rather long, not swollen at apex, white-ringed at the middle; 

 palpi slender, considerably longer than the proboscis, black-scaled, with white an- 

 nulatlons, the apical two-thirds clothed with long hairs; head and thoracic markings 

 as in the female; abdomen long and slender, dull black-scaled above, the segments 

 with very broad basal white bands, expanded laterally on the sixth, seventh, and 

 eighth segments; venter pale-scaled, with an indication of subapical dark banding; 

 legs marked as In the female. Length, 3.5 mm. 



