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Genus Psoropliora. 
the American continent from the United States down to the 
Argentine Republic. 
Three species have previously been described: P. ciliata, 
R. Desvoidy, P. Boscii, R. Desvoidy, and P. Holmbergii, 
Arribalzaga. 
The second, I fancy, is synonymous with P. ciliata. 
To these I now add Walker’s Sabethes scintillans, which is 
undoubtedly a Psoropliora . 
1. SYNOPTIC TABLE OF SPECIES. 
Fuscous, clothed with yellowish and pale scales 
(7-8 mm.) . 1 ciliata. Fabiicins. 
Fuscous, clothed with dark scales, black in 
general appearance . 2 Holmbergii. Arribalzaga, 
Fuscous, clothed with brown scales, apices of 
hind femora white, very densely scaled. 3 scintillans. Walker. 
1. Psorophora ciliata. Fabricius (1794). 
Culex ciliatus. Fabricius. 
Culex perterrens. Walker. 
Culex conterrens. Walker. 
P. Boscii. Rob. Desvoidy (1827). 
Culex molestus. Wiedemann ( 1 ). 
(Entj Sysl. iv. p. 401 (1794), Fabr.; Syst. Anti. p. 38 (1804), Fabr. { — Culex 
ciliatus ) ; Dipt. Exoti. p. 36 (1821), Wied.; Auss. Zwei. Ins. i. 3, 5 
(1828) Wied.; Dipt. Exoti. p. 11, Sup. iv. (1838), Macq.; Dipt. Brit. 
Mus. i. p. 2 (1848), Wlk.; Ins. Saund. p. 431, Wlk. (=0. perterrens) ; 
Dipt. N. Amer. Cat. 18, Osten-Sacken; Dipt. Arg. Rev. d. 1. Mus. d, 1. 
Plata, p. 40 (1891), Arri.) 
(Fig. 37, PI. X.) 
Thorax fuscous, with a median and lateral rows of narrow 
curved golden scales, sides of the mesonotum. paler, with short 
white broad scales. Abdomen brown, with dull creamy-wliite 
scales. Legs densely scaly, metatarsi and tarsi basally pale 
banded, especially on the hind legs; the scales of the leg standing 
out from the surface. 
9 . Head testaceous brown, with a few rather broad curved 
white scales and brown and golden narrow forked upright ones, 
brown and golden bristles in front and a bare line in the centre 
of the head; antennae brown, with the basal joint testaceous 
and the base of the second joint bright testaceous; palpi bright 
ochraceous, with scattered black scales which are very thick at 
the top, giving it a deep black appearance; proboscis testaceous, 
