Mr. T. B. Fletcher on the genus Deuterocofus. 127 
“ Di.stinguished from Deutewcopus tengstroenii by the non-hairy 
hinder-tibial spurs and the not bright rust-yellow costal cilia of the 
first segment, from Deuterocopns ruhrodadylus by the obvious scale¬ 
thickening at the end of the fore-tibia. 
“As already remarked, it may be that the three described forms 
of Deuterocopus (tengstroenii, rubrodadgliis and socotranus) are only 
local races of one species, but that can only be proved by comparison 
of sufficient material.” 
As regards the figure of I), socotranus given by Dr. 
Bebel, it is particularly to be reinarketl that the slight 
scale-tuft in the dorsal cilia of the forewing beneath the 
base of the first cleft has been omitted in error; this tuft 
is actually present in the specimens themselves. 
The following is a general description of the species :— 
Expanse 9-10 mm. Paljii erect, third joint about half length of 
second ; very pale-ferruginous, apices of joints banded with darker. 
Antennae above blackish dotted with white, beneath pale-ferruginous. 
Head and thorax dark brownish-ferruginous, intermixed with darker 
and lighter scales ; pectus white. Abdomen dark ferruginous- 
brown, first two segments ferruginous-ochreous variably mixed with 
whitish, third segment edged posteriorly by a transverse raised bar 
of whitish-ochreous scales, fourth, sixth and .seventh .segments with 
narrow submedian longitudinal whiti.sh stripes; ventral surface 
white, fourth segment edged posteriorly with red-brown. Legs 
ferruginous-brown, paler or whitish towards base and on tarsi : fore¬ 
tibia with acuminate scale-tuft on apex ; mid-tibia with apical scale- 
tuft and a pair of long spurs ; hind-tibia with moderate whorl of 
scales at J and larger whorls at f and apex, the.se two whorls 
emitting each a pair of long, naked spurs which are banded with 
blacki.sh before apex; the posterior edges of these whorls of scales 
are usually paler or whiti.sh and the hind-tibia is more or less 
banded with whitish beyond first and second whorls; posterior 
tarsus with first, third and fourth joints, banded with paler or 
whitish. 
Forewing cleft from about f, first segment moilerately broad, 
second segment again cleft from about \ of its length : very dark 
brownish-ferruginous intermixed with paler or whitish scaling some¬ 
times forming a patch at base of first cleft: costal area suffused with 
pale-ochreous, especially evident at about ; first segment cut at 
about by an inwardly-oblique transverse whitish line preceded by 
pale-ochreous, at f by a .similar but more distinct white line not 
reaching costa, segment beyond this much suffused with pale- 
