454 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
rau)\ front of head slightly broader and squarer; median thoracic brown band as in 
/. itutttitata. Forewings with tin* costal edge Btraightof and the apex less turned up 
than in /. indentata, the apex being slightly more round. -d than in th it specie* or in 
/. inched. Basal line distinct, making a sharp angle on (he median vein, and more 
incurved in the tnbmedian space than in /. luiemtat* : second line much more .sud- 
denly incurred than /. indentata, the same line being. straight in /. inclusa ; the .short 
third Line as in /. indentata, but more sinuous. Fourth and outer line much as in /. 
indt ntata, but the specie* differ* from all the others known by the large conspicuous 
irregular whitish ocherous patch which tills in the costal curve of this line and ex- 
tends half way from the costal end of the line to tin* apex of the wing; uo deep brick- 
red discoloration on each side of costal half of fourth line, so distinct in /. indentata, 
but a long discal blackish stripe extends along the first median venule to the sub- 
marginal row of brown dots which are not so distinct as in /. indentata or /. inchtsa ; 
though the marginal row of dark brown Innnlea is as distinct as in /. inclusa. Friuge 
as in /. inehua, but that on the hind wings much darker. Hind wings darker than 
in /. indentata. Wings beneath much as in /. indentata, but ihere is no reddish tint 
towards the apex, and the white oblique costal streak is much less distinct. There 
are traces of a common brown diffuse line. Abdomen a little shorter, the fan or 
tuft of scales perhaps shorter and expanding wider. Expanse of wings, *25 mm ; 
length of body, l'2 mm . 
24. The whites ichthyura. 
Ichthyura albosigma Fitch. 
Order Lepidoptera; family Bombycid^. 
Early in July, eating the leaves and reposing in a 
cavity formed of leaves drawn together like a ball, a 
large black caterpillar with white and yellow dots and 
stripes and a hump on the back of its fourth and eleventh 
rings; its pupa lying in a cocoon attached among the 
leaves, and in ten days giving out the moth the latter 
part of July; the moth grayish-brown, its forewings 
crossed by three faint paler streaks, the two first par- 
allel, the hind one with its outer half silverv white 
Fio. 165.— Ichthyura albosigma. 
and strongly waved in shape of the letter S ; width, 1.50. (Fitch.) 
25. V-MARKED ICHTHYURA. 
Ichthyura van Fitch. 
This moth, which is very similar to I. inclusa, but darker colored aud 
smaller, with the bands more slender aud distinct, may be readily dis- 
tinguished from that species by its having the first band not dislocated 
but in its middle strongly curved backward, the apex of the curve 
usually forming an acute point. The last band also is much more 
strongly undulated near its outer end, curving backwards almost in a 
semicircle, aud is of a much more vivid white color, aud broadly bor- 
dered on its hind side witii bright rust-red. Its hind legs also are des- 
titute of the paler baud across their middle. Its width is about 1.20. 
I am unacquainted with its larva, but, like the other species of this 
