Genus Culex. 
74. Culex subalbatus. Coquillett. 
(Proc. U. S. Nat. Mus. yol. xxi. p. 302 (1899).) 
“ $ . Head and its members black, except the basal half of the second 
antennal joint, which is yellow ; the first joint, and the occiput next the 
eyes, covered with white tomentum ; proboscis curved downwards towards 
its apex. Thorax brownish-black, the sides and several spots on the 
pleura covered with white tomentum, a tuft of black hairs above the 
insertion of each wing; scutellum, metanotum, and posterior angles of 
the thorax yellowish-brown. Abdomen brownish-black, thickly covered 
above with black tomentum, the under side of each segment bearing a 
fascia of silvery-white tomentum, which is prolonged upon the sides of 
the segments. Coxae yellowish-brown, the anterior sides of the front 
ones and the outer sides of the middle and hind ones covered with silvery- 
white tomentum ; femora black, sometimes more or less yellowish-browm, 
the under sides of the front and middle ones encroaching upon the 
posterior sides, also the under sides of the hind ones encroaching both on 
the anterior and posterior sides, covered with silvery-white tomentum; 
tibiae and tarsi black; inner claw of the front tarsi slightly longer than 
the outer one, and provided with a tooth on the under side, the outer 
claw destitute of such a tooth. Wings hyaline. Halteres yellow, the 
knobs brown. 
Length , excluding the proboscis, 7 mm. Six specimens (No. 641). 
Type.— No. 3962, U. S. N. M. 
Habitat. —Japan.” 
Note. —Coquillett describes this as a 9 • He states that the 
fore ungues are unequal, one uniserrated and the other simple. 
This is the only instance I can find of such a character in a 9 
Oalex . All the three hundred odd species I have examined have 
always equal ungues in the 9 > and are always both uniserrated 
or both simple. The £ ’s, however, have the ungues as described 
by Coquillett. It is certainly a distinct species, and did not 
occur in the small collection received by the Museum from Tokyo. 
75. Culex atratus. n. sp.* 
(Fig. 135, PI. NXXLY.) 
Thorax deep umber-brown to almost black. Abdomen black, 
sometimes with a dull coppery-brown sheen, each segment with 
small lateral basal white spots, most distinct on the apical 
* This and a few other species must be removed from Culex and form a 
new genus, the arrangement of the wing scales being very characteristic. 
