THE WHITE COFFEE—LEAF MINER. 389 
from the costa, and runs obliquely to a point at some distance 
beyond the black spot. Still nearer the end arises another line of 
black scales, which runs less obliquely, and meets the former at 
its termination, the two thus forming an acute angle. The inner 
and outer edges of the front wings, and the whole circumference of 
the hind wings bear long smoky-black or brown fringes. The 
hind wings are very narrow and pointed. They are smoky-black 
on both the upper and under sides.* ‘The front wings are of the 
same color on the under side. From the front of the head pro- 
jects a spreading tuft of silvery-white hairs. The scales behind 
this tuft lie smoothly back on the head. The antennæ are about 
three-fourths as long as the front wings, and thread-like. Their 
basal joints are thickly clothed with silvery hairs, which form a 
velvety eye-cap as large as the eyes. The eyes are black. 
Pupa.— The chrysalis (pupa) is two millimeters long; of a 
yellowish brown color. The head is large ; the eyes are black ; the 
limbs are glued to the body; the last pair of legs extends very 
little beyond the tip of the abdomen. It appears to me that eight 
abdominal segments are visible. 
Cocoon.— The cocoon is five millimeters long, slender, spindle- 
shaped, formed of threads of silk of a white color, which are laid 
lengthwise and close together upon the outside. It is open at 
ath ehd with a longitudinal slit. It rests upon a flooring of silk, 
and is covered by a light web of white silk, which is spun across 
one of the furrows at the edge of a leaf. This web is a little 
er at each end than in the middle, and has an opening in 
0 end shaped like the point of a lance, through which openings 
è ends of the cocoon beneath may be seen. 
Larva.—The caterpillar (larva) is four or five millimeters long, 
gery seventy-five hundredths of a millimeter broad across the first 
ring (prothorax), which is the widest part. It is of a yellowish 
h color, partially transparent. It is flattened, and consists of 
twelve rings (segments) behind the head, between each of which 
body is much constricted. The second and third segments 
a With the first, form the thorax,) are successively narrower 
: the Segment in front of them; the next three segments are 
anid broader, and the rest of the segments (whieh, with 
‘three before them, form the abdomen), are successively nar- 
* 
i ti: ae Sete 4 
Periors, n says (Mém. etc., p. 15) that they are covered with silvery scales like the su 
