JIEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 133 



/. iiieliisd. but the tirst and second lines are sitnate<l neaier tog-cjtlier than in 1. iiirliisa. Tlie 

 sul)a])ieal liiownisli tinned region bordering;- tbe upper ball' of tbe fourtli line is narrower and of 

 a deei)er reddisli brown bue tiian in I. inclusa. Tbe subunirj;iual series of bnear sjiots is not so 

 distinct as in 7. iiivlnsa. wbile Ibe darlv line crossing tbe bind wings is paler tban in that species. 



I'.eneatb, tbe wings are a little darker; tbe line conunon to botb wings is niucb more distinct 

 tbaii in I. iitcliifi((, and tbe costa of tbe fore wings is margined witb re(blisb. 



I'jxpanse of wings, (J,24mni.; 9 , 32 mm.; lengtb of body, <},12mm.; 9,].>mm. 



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

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



Geographical dixtrihution. — Thus far only known to myself from tbe Appalachian i)rovince; 

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

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



Var. Ichtliyuru palla French. — Tbe caterpillar of this moth was found feeding on willows in 

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

 fastened together at tbe ends of the twigs, but no luore tban half a dozen occurred in a nest. 

 Those put in breeding cages pupated before the nii<ldle of October. The moths ajipeared in the 

 following April and May. 



The moth is related to /. iuclusa Hiibn. and /. aniata G. & E.; more nearly to tbe latter in 

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

 from /. inclusa in tbe coloring of its larvii. It differs from I. oriiata in the color of the scales 

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

 of that line, as it is seen here partially obsolete o])posite the disk, as well as in some other points. 

 The apices are no more i)roduced than in /. iiichisa, 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 Iliibner. 



Larca. — Length, 1.25 inches when crawling; body nearly cylindrical; two black tubercles, close together, on 

 the top of third and eleventh segments. 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 substigmatal space, the body is flesh 

 colored. Head shining- black. .4. few gray hairs scattered over the body. (French.) 



The moth. — Length of body, 0..56 inch ; expanse of wings, 1.10 inches. General C(dor of body and fore wings, 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 pale gray scales at the 

 base^of each antenna, the usual deep brown mark from the antenna' to the top of the thoracic crest. Fore wini's 

 with the usual transverse lines almost white. The basal line makes a bend outward on the median vein; from this 

 it goes ill a straight course to the snbmediau 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 base obliquelv to the 

 posterior margin, near the iiosterior 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 usual '• V as in tlio 

 allied species. The fourth line is slightly S-shaped in its cost.al third. Outside the fourth lino is a subteriiiiual. 

 somewhat zigzag row of black spots, some of which are oi'teu faint or obsolete. In the discal cell there is usually a 

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

 of the 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 submedian vehi, and is seen below that vein on the third line; the second, outside the second 

 line through its whole course, is darkest next the line; tlie 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 line are three grayish yellow 

 spots witli a few reddish Iirown scales. Hind wings i)ale smoky gray with a faint w'hitish 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, witli a dark transverse line. (French, Can. Ent., xiv, 33.) 



Ichflii/iira jocosa H. Edw. (PI. III. fig. 22). One 9 type: Indian River, Florida. Tbis is, as I 

 have satisfied myself by an exaaiination of tbe type in tbe American Museum of Natural History, 

 New York, only a small inch(s(t, differing from tbe normal form of the species in tbe inner arm 

 of tbe V being firmer and less sinuous, being interrupted at the union with it of tlie shoit middle 

 line which ends on the hind edge ol' the wing, while in inclusa the line is not usually interruiited, 

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



