INIEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 133 



/. tncliisa, but the first and second lines are situated nearer together than in /. inclusa. Tlie 

 subapical brownish-tiuged region bordering the upper half of the fourth line is narrower and of 

 a deeper reddish brown line than in I. indusfi. The submarginal series of linear spots is not so 

 distinct as in /. inchisti, wliile the dark line crossing the hind wings is paler than in that species. 



Beneath, the wings are aj little darker; the line common to both wings is much more distinct 

 than in I. inchtsa, and the costa of the fore wings is margined with reddish. 



Expanse of wings, <? , 24 mm.; 9 , 32 mm.; length of body, i , 12 mm.; 5 , 1.3mm. 



This variety differs in its smaller size and in the costal portion of the fourth line being 

 sinuous, bent outward near the costal edge, then bent inward and again bent outward. 



Gcof/rapMcal distrihution. — Thus far only known to myself from the Appalachian province; 

 New York City (Elliot); Janeville, Md. (Mas. Comp. Zool.). Professor French sends me the 

 following localities: Canada, Lincoln, Nebr., Colorado. 



Var. Ichthyura 2)alla French. — The caterpillar of this moth was found feeding on willows in 

 southern Illinois through the most of September, resting in an inclosnre formed of several leaves 

 fastened together at the ends of the twigs, but no more than half a dozen occurred in a nest. 

 Those put in breeding cages pupated before the middle of October. The moths appeared in the 

 following April and May. 



The moth is related to I. hirlusa Hiibn. and I. ovnata G. & II.; more nearly to the latter in 

 size and coloration, but differs from both in several particulars. Besides size and color, it differs 

 from T. inclusa in the coloring of its larva. It differs from /. ornata in the color of the scales 

 sprinkled over the fore wings, the color of the spots outside the fourth line, and the continuation 

 of that line, as it is seen here partially obsolete opposite the disk, as well as in some other points. 

 The apices are no more produced than in /. inclusa, nor is the costa more bent (French). We 

 would add that, judging from two specimens received from Professor French, we are inclined to 

 think that this is a variety of /. inclusa Hiibner. 



Larva. — Length, 1.25 iucln'S when crawling; hody nearly cylindrical; two black tubercles, close together, on 

 the top of third and eleventh sejjments. On the back are four bright but narrow yellow lines alternating with 

 narrow black ones. The stigmatal line is black ; above this, on the subdorsal space, an irregular alternation of black 

 and white. Below the stigmata a narrow yellow line; below this, on the substiguiatal space, the body is flesh, 

 colored. Head shining black. A few gray hairs scattered over the l>ody. (French.) 



The moth. — Length of body, 0..51) inch ; expanse of wings, 1.10 inches. General color of body and fore Avings, pale 

 gray, the latter rather sparsely sprinkled with dark brown scales. Palpi brown above, scarcely projecting beyond 

 the head, third joint concealed by the hairs of the others. Front slightly brownish, a tuft of p.ale gray scales at the 

 base of each antenn.a, the usual deep brown mark from the anteun;t to the top of the thoracic crest. Fore wings 

 with the usual transverse lines almost white. The b.asal line makes a bend outwiird on the median vein ; from this 

 it goes in a straight course to the submediau vein; from this to the posterior or inner margin it curves a little 

 outward. A second line extends from the costa about one-fourth of the distance from the bcise obliquejy to the 

 posterior margin, near the posterior angle. A third line passes straight across the wing from the posterior margin to 

 the second, a little below the median vein. The fourth begins as a white spot on the costa a little more than two- 

 thirds of the distance from the base, .and joins the second on the posterior margin, making the nsuiil "V" as in the 

 allied species. The fourth line is slightly S-shnped in its costal third. Outside the fourth line is a subtermiual, 

 somewhat zigzag row of black spots, some of which are often taint or obsolete. In the discal cell there is usually a 

 faint oblniue line that seems to be a continuation of the third line, though it does not reach the costa, and the end 

 of tlie cell sometimes appears like a short line. There are three oblique shades of brownish olive, more or less 

 distinct, that cross the wing parallel to the second line ; the first, beginning on the costa inside the basal line, faintly 

 borders that line to the subuu:dian vein, and is seeu belov,- that vein on the third line; the second, outside the second 

 lino through its whole course, is darkest next the line; the third from both sides of the fourth line to the middle of 

 the outer border faint, except along the line. .Just outside the S-part of the fourth liuo are three grayish yellow 

 spots with a few reddish brown scales. Hind wings pale smoky gray with a faint whitish line from the fourth of 

 the fore wings to the anal angle. Beneath, the fore wings are about the color of the hind wings above, pale along 

 the costa and terminally ; the hind wings are paler, with a dark transverse line. (French, Can. Ent,, xiv, 33. ) 



Ichlln/umjocosa R.'EihY. (PI. Ill, fig. 22). One 2 type; Indian River, Florida. This i.s, as I 

 have satisfied myself by an examination of the type in the American Mn.seum of Natural History, 

 New York, only a small inclusa, dilVering from tlie normal form of the species in the inner arm 

 of the V being firmer and less sinuous, being interrupted at the union with it of the short middle 

 line which ends on the hind edge of the wing, while in inclusa the line is not usually interrupted, 

 although two of the inclusa in Mr. Edwards's collection do have the line interrupted as in his 



