258 MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 



thus colored, wliiK' the rest of the thorax is darker cinereous, the ahdoiiien beiiij;- a little paler.. 

 The larger part of the fore wings is of a pale wliitish asiien, coneoloi-ous witli th<? head and 

 protliorax. Nearly the basal thiid is of a darker cinereous (usually almost black) than the hinder 

 part of the thorax, and this portion embraces tliree uiuMiual black linear streaks, one extending 

 along the subcostal, the middle oue the largest and iollowing the cubital, while the shorter one 

 runs alon^- the internal nervure. This region is bounded externally by a i)ale ashen line which 

 begins on the basal third of tiie costa and runs obli(|ueIy inward; it is twice zigzag before the 

 subcostal, is bent more obtusely outward in the discal space, and again bends slowly outward, 

 and turns at a right angle to meet the dark streak on the internal vein, and usually crosses the 

 wing, ending in the middle of the internal edge. The discal mark is a faint curved blac-k line, 

 succeeded by a rather oblique, very obscure ciuei-eous lunated line. Ui)on the costa just beyond 

 is a white spot, once zigzag on the costa, edged without with black. Beyond this spot are tliree 

 minute dark spots, the inner of whicli is succeeded by a series of four large pale lunules margined 

 on eirher side with cinereous, which end on the third median, being in the third interspace replaced 

 by a square conspicuous bhick spot, whose upper side is continued a little outward, while on the 

 opposite lower side is a supplementary linear dot in the next interspace. This spot is continuous 

 with a submarginal oblique subapieal zigzag pale line, dusky within and bearing within three 

 dark streaks in the middle of each interspace. Beyond this line the margin is dusky cinereous, 

 ■with a marginal series of black linear lunules interrupted by the venules. Fringe ashen, •with 

 long black streaks, rather than dots, on the ends of the venules. 



Hind wings but little paler than the abdomen, with a rather distinct pale band on the outer 

 third, which is curved suddenly outward in the middle. Base of fringe dark, as are the venules 

 and outer margin of the wings. The oidy mark on them is a single obliiiue costal streak a little 

 beyond the middle of the wing. 



Expanse of wings, S 45 mm., 5 55 mm. ; length of body, S 20 mm., 9 22 mm. 



This fine species is rather above the medium size, and may be recognized by the i^ale, almost 

 white, fore wings, whose basal third is blackish; also by the obscure linear curved discal mark, 

 and more especially by the sijuarish black spot near the internal angle, which is isolated from the 

 submargino-apical dusky line, of which it forms a part. 



The hind wings are crossed on the outer third by a diffuse whitish sinuous line not present 

 in H. astarte or obliqua. 



The species is also notable from the six dusky dorsal tufts along the abdomen of both sexes. 

 It is liable at first sight to be confounded with If. jyulverea, but differs in the clearer, less spotted 

 middle portion of the fore wings. 



The foregoing description api)lies to those examples, live or six, which I have bred at Provi- 

 dence. In a female expanding (50 mm., received from Mr. Hulst (PI. V, fig. 21), and presumably 

 collected in New York or New Jersey, the fore wings are fully as light, but the double zigzag line 

 on the basal third of the wing is much more distinct than in the males 1 have reared or seen, and 

 forms the outer edge of the blackish basal third of the wing. Beyond this line the wing is almost 

 white, with a very faint yellowish brown shade toward tlie apex. Extradiscal line composed of' 

 three parallel scalhqied lines, and in the second or tliird median space is a, distinct black irregular 

 lunule; a scalloped subapieal black line. 



Hind wings uniformly mouse colored, with a distinct wliitish diffuse line, which enables one- 

 to readily separate this species from //. axtdi-tc or obli(jii(i. 



The form figured by Cramer is probably the present species; it is like a large 9 (Fig. 21 ) in my 

 collection. Cramer's figure is very jioor and is a rude representation of this variety. My specimen 

 is exactly like Grote and Itobinson's type, which is in the American Museum of Natural History, 

 with which I have compared it. The same specimen also agrees with their colored figure. My 

 example is a 9 expanding 45 mm. It differs from those described above in having a wide, curved, 

 black shade arising from inside of the discal mark and nearly swami)ing it; it then curves around 

 backward and outward, tilling the second cubital s])ace and inclosing two black curved streaks 

 or lines, while the lunule in the first cubital si)ace is large and distinct, and tlie scall(q)ed 

 subapieal black shade beginning on tiie lirst cubital venule is broad and distinct, this shade 

 being distinct in the types of my original description of tcniicllu. In this variety the fore wings. 



