454 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



vau) ; front of bead slightly broader and sc^uarer; median tboracic brown band as in 

 /. indentata. Forewiugs with the costal edge straigbter and the apex less turned up 

 than in /. indentata, the apex being slightly more rounded than in that species or in 

 /. inclusa. Basal line distinct, making a sharp angle on the median vein, and more 

 incurved in the submedian space than in /. indentata ; second line much more sud- 

 denly incurved 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 I. 

 indentata, but the species differs from all the others kuowu by the large conspicuous 

 irregular whitish ocherous patch which fills in the costal curve of this line and ex- 

 tends half way from the costal end of the line to the apex of the wing ; no deep brick- 

 red discoloration on each side of costal half of fourth line, so distinct ini. 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 /. inclusa ; 

 though the marginal row of dark brown lunules is as distinct as in /. inclusa. Fringe 

 as in /. inclusa, but that on the hind wings much darker. Hind wings darker than 

 in /. indentata. Wings beneath much as in /. indentata, but there 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, ^5™"" ; 

 length of body, 12™™. 



24. The winxE-S ichthyura. 



Ichthyura alboaigma 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 iu 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 bv three faint paler streaks, the two first par- 



FiG. 165. — Ichthyura albosigma. ■ ' ^ 



allel, the hind one with its outer half silvery white 



and strongly waved in shape of the letter S ; width, 1.50. (Fitch.) 



25. V-MARKED ICHTHYURA. 



Ichthyura vau Fitch. 



This moth, which is very similar to I. inclusa, but darker colored and 

 smaller, with the baads more sleuder and 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 au acute point. The last band also is much more 

 strongly undulated near its outer end, curving backwards almost in a 

 semicircle, and is of a much more vivid white color, and broadly bor. 

 dered on its hind side with bright rUvSt-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 



