CULEX TAE8ALIS 231 



of white tomentum at base of each segment and at apices of the last three. Legs 

 brown. In front and behind covered with white tomentum, bases of femora yellow, 

 both ends of tarsal joints broadly white; front and middle tarsal claws each bearing 

 a tooth on the under side, hind tarsal claws simple. Wings hyaline; scales of veins 

 brown, with a few white ones Intermixed. 



2 same as the ^, with these exceptions: Palpi black, the apex broadly and inner 

 side of apex of the penultimate joint covered with white tomentum ; antennae wholly 

 brown; tarsal claws destitute of teeth. Thorax sometimes yellowish-brown. Length, 

 4.5 mm. 



Argus Mts. and Folsom, Calif. One male and four females in the National Museum, 

 collected by Mr. A. Koebele. 



Closely related to tceniorJiynchus, Wied., but In that species the male has a tooth 

 on under side of one tarsal claw and two beneath the other claw, and the female has 

 each front tarsal claw toothed. 



Obiginal Description of Cuux atfinis : 



Female: Head and members dark brown, proboscis lighter in the middle; scales 

 of head light brown; thorax brown, mesonotum uniformly covered with brownish 

 yellow scales, pile black, scales of pleurse mostly white, abdomen brownish scaled, a 

 narrow band at bases of segments white, pile pale yellow, venter white-scaled; coxae 

 and base of femora pale yellow, distal end of latter dark brown, tibia dark brown 

 with extreme apex and base white; tarsi concolorous with both ends of joints white, 

 which on the front tarsi is indistinct, and the last joint of hind tarsi wholly white; 

 claws small, simple; veins of wings thinly clothed with light brown scales, petiole 

 of first submarginal cell one-third length of that cell, cross-veins at ends of first and 

 second basal cells the length of the cross-vein at end of second basal cell distant from 

 each other. Length, 3.5 mm. 



One specimen; Arizona. Prof. F. H. Snow. 



Okiqinai, Dbsceiption of Cuiex keixoggii: 



Thorax brown, with reddish-brown scales showing linear arrangement, two small 

 pale spots, some rows of gray scales behind and on the scutellum. Proboscis black, 

 with a white band. Abdomen black, with basal white bands and lateral spots. Legs 

 black; femora pale at base, with a white line or row of spots, also the tibiae, with a 

 line of white spots. Metatarsi and tarsi showing apical and basal white banding; 

 last hind tarsus with a black median band or all white. Wings unspotted. 



?. — Head brown, clothed with narrow-curved gray scales in the middle and behind, 

 white ones forming a border around the eyes, brown ones between; at the sides small 

 flat white scales, in the middle are numerous ochraceous upright forked scales, 

 laterally the upright forked scales are black, two long brown bristles project forward 

 between the eyes. Palpi black-scaled, with some large white scales at the apex, and 

 some forming a ring near base; apex, etc., with a few dark bristles; proboscis black, 

 with a prominent white band; antennae black, basal and second joints dark, tes- 

 taceous, the basal joint with white scales internally; clypeus brown. Thorax 

 brownish-black, with rich reddish-brown narrow-curved scales, and a few broader 

 gray ones at the sides in front, and some arranged in lines behind the mesonotum, 

 on its surface are two small pale spots, two of the posterior white lines being con- 

 tinued back from them, two short, broader ones are situated in front of the bare 

 space before the scutellum; the reddish-brown scales have a linear arrangement, due 

 to two prominent median bare lines; bristles black; scutellum brown, with narrow- 

 curved pale scales and brown border-bristles; metanotum deep brown; pleura brown, 

 with some gray scales. Abdomen black, with basal white bands and white lateral 

 spots and brown border-bristles; apex bristly; venter yellowish-brown, with scattered 

 gray scales. Legs black, banded, striped and spotted in lines with white; base of 

 femora gray to dull ochraceous, pale ventrally, with a row of white spots above, al- 

 most forming a white line; apex with a white spot; tibiae also with a row of white 

 spots, forming almost a line, apex white; fore and mid metatarsi and tarsi with nar- 

 row apical and basal yellowish bands, except the last tarsal segment; in the hind legs 

 the metatarsi and tarsi have broad, almost white bands, the last tarsal in some speci- 

 mens being almost all white; ungues equal and simple. Wings with the veins very 

 densely scaled with typical brown Culex scales; those at the base of the third long 

 vein thicker, forming a small, rather obscure, dark spot; first submarginal cell 

 longer and considerably narrower than the second posterior cell, its base slightly 

 nearer the base of the wing, its stem about one-third of the length of the cell; stem 

 of the second posterior cell about two-thirds the length of the cell; posterior cross- 

 vein not quite its own length distant from the mid cross-vein; fringe dark brown; 

 halteres testaceous, knob darkened. 



Length. — 5 to 5.5 mm. 



