GENUS rSOROPHORA 345 



Fuscous, clothed with dark scales, black 



in general appearance 2 Hohnhergii, Arribalzaga. 



Fuscous, clothed with brown scales, apices 



of hmd femora white, very densely 



scaled 3 scintallaus, Walker. 



1. PSOROPHORA CILIATA (Fabr). 



C. ciliatus, Fabr. ; C. inolestus, Wied. ; P.S. Boscii, R. Desv. ; C. perterrens. 

 Walker ; C. conterreus, Walker. 



(Ent. Syst. iv, p. 401 [1794], Fabr. ; Syst. Antl. 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. [= G. ijcrterrens] ; 

 Dipt. N. Amer. Cat. 18, Osten-Sacken ; Dipt. Arg. Rev. d. 1. Mus. d. 1. 

 Plata, p. 40 [1891], Arri.) 



Wings unspotted. The three distal tarsal joints with yellowish 

 basal bands. Thorax yellowish-white, with median and lateral 

 fuscous lines, the armature consisting of large overlapping scales, 

 as also is that of the abdomen, which both dorsally and ventrally 

 is almost pure white. Legs testaceous, tufted at the joints. 



This is one of the largest species in the family, the abdomen ( $ ) 

 being over 6 mm. long, and the wing nearly 8 mm. The entire insect 

 has a rich red-brown ground colour, covered with nearly white scales ; 

 the proboscis and palps being, however, darker, their scales being mixed 

 yellow and fuscous. Those of the 5 are exactly one-third the length of 

 the proboscis, whUe in the ^ , they are nearly twice as long. The legs 

 are deep brown above, and on the whole of the first two tarsal joints. 

 There is a dark median nude line on the nape. 



Habitat. — Texas, Atlantic coast of Southern states of America, 

 Georgia, Honduras, Argentine Republic, Brazil. Its bite is said to be 

 unusually pamful. 



2. PSOROPHORA HOLMBERGII, Arribalzaga ( ' L. A." p. 40). 



Closely resembles the preceding, being nearly as large, and 

 difi'ering only in being of a much darker colour, the body scales 

 being dark grey, instead of yellowish-white, and in its wanting 

 the dark naked line on the nape ; but though necessarily less 

 prominent, the thoracic adornment is essentially the same. The 

 coxae too are pitch-brown instead of having almost snowy tufts 

 of scales. The legs are almost black, and the tarsal banding of 

 the fore legs very indistinct, while on the mid legs, the upper two, 

 and on the hind, the upper four tarsal joints have silvery basal 

 bands. 



Habitat. — Brazil, and Argentine republic. 



