678 Messrs. W. F. H. Rosenberg and G. Talbot on 
base of the costa is ferrugineous. Hind-wing similar to the upper 
except that the eye-spots are ringed with ferrugineous. ¢ 9 Length 
of fore-wing 36 mm. 
2 resembles the g but wings more rounded. 
Abdomen black, ventral surface grey with a mesial streak of 
black. 
Type, § and 9, La Selva, San Juan, Choco, Slopes of 
Colombia, 4600 feet. 1 3, 19 Pueblo Rico, W. Colombia, 
5200 feet. 1 Siato, W. Colombia, 5200 feet, 1 2 Colombia. 
In British Museum 1 2 Colombia. 
Prerella albofasciata, sp. nov. 
Allied to hortona, Hew., but differs conspicuously in the white 
band of the fore-wing, and the white patch of the hind-wing. 
g upperside. Fore-wing deep purplish brown. A white band, - 
narrowly margined with blue, 3 mm. in breadth and 10 mm. in 
length, crosses the end of the cell, commencing at vein 10 and 
terminating on 3, and entering the cell at the lower discocellular. 
Hind-wing deep purplish brown and bearing a patch of white 
5 mm. square which stands between 4 and 6 close to the cell, not 
touching 4 and extending a little beyond 6. This is bordered by 
pale blue which is of greater extent distally. 
Underside. Fore-wing coffee-brown in the apical and distal 
part, the cell being dusted with the same colour at the base and 
apex. The remainder is yellowish-grey. A white band as on the 
upperside, being continued by two brown lines diverging to the 
inner margin, the space between them much paler than the basal 
area, being of the same colour as the hind-wing. The cell is crossed 
by a curved brown line proximally of which are two black dots. 
A similar line crosses the submedian space near the base. 
Hind-wing yellowish-grey traversed by three almost parallel 
brown lines running from the costal to the inner margin. The 
first near the base is slightly waved, the second lies just outside 
the cell, and the third about 4 mm. beyond. Three black dots 
at the base, two in the cell and one below the median. A sub- 
marginal row of five black dots placed on the intraneural folds in 
cellules 2-6. The margin from the apex to vein 5 is narrowly 
brown. 
° larger, but upperside similar to g. Underside, the line across 
the cell is straight. The distal part of the hind-wing separated 
by the third transverse line is brown like the outer part of the 
fore-wing but lighter. The submarginal spots are ringed with 
lilac. 
