40 
A Monograph of Culioidae. 
A 8 . Abdomen dusky, with apical pale borders, basal 
lateral patches of ochraceous scales and a median 
ochraceous line. 
Thorax rich golden-brown, with two pale 
parallel longitudinal lines . mediolineatus. n. sp. 
A 0 . Abdomen with basal white triangular spots on 
segments. 
Thorax brown in front, pallid behind, with 
three double rows of black bristles in 
front, two on posterior part of mesonotum. inflicius. n. sp. 
66. Culex albifasciatus. Macquart (1838). 
Culex vittatus. Phillipp (1865). 
Oclilerotatus albifasciatus. Arribalzaga (1896). 
(Dipt. Exot. i. 35, 4 (1838), Macquart; Dipt. Argentina, p. 44, Arribalzaga; 
Verb, zool.-bot. Gesell. xv. 596, 6 (1865), Phillipp.) 
Thorax black, ornamented with narrow, reddish-brown curved 
scales, with a median yellow-scaled line and a broad line of 
yellow scales on each side in front, narrowing behind. Abdomen 
dusky brown, with a median yellowish-white line spreading 
out apically on each segment, and with a basal patch of pure- 
white scales on each side of the segments. Legs with brown and 
grey scales. Ungues of the 9 equal, uniserrated. 
9 • Head covered with creamy-yellow curved scales and 
upright forked pale yellow ones in the middle, a band of dusky- 
yellow curved ones and numerous black upright forked ones 
on each side, then small, dark, flat scales and flat, pale, dull 
yellowish ones at the sides, a border of short golden-brown 
bristles projecting forwards over the eyes (at the sides), and 
some pale ones between the eyes; antennae deep brown, except 
the deep bright brown basal joint and the yellowish-brown 
second joint; basal joint with pale scales; palpi covered with 
deep brown scales ; proboscis deep brown. 
Thorax black, ornamented with narrow, bright reddish-brown 
curved scales, with a narrow, often indistinct, median line of 
yellow scales, and a broad line of yellow scales on each side in 
front, which narrows to a thin line behind with three rows of 
brown bristles and numerous golden-brown ones over the roots 
of the wings ; scutellum pale reddish-brown, with pale curved 
scales and brown bristles to the posterior border ; metathorax 
dull purplish-brown ; pleurae dark brown, with numerous patches 
of frosty-white scales. 
