157 



examples. Though my material is scanty, 1 do nol see any reason for sepa- 

 rating iduata from jiuctuata, which varies greatly in Europe. < >ne large variety 

 received from Europe is quite different from any American individual; bul 



another is almost identical (except in being larger) with a While Mountain one. 

 Larva. — "The caterpillar is slightly attenuated toward each extremity; 

 it generally rests in a slightly-bent posture; it is very variable in color, brown, 

 gray, or green. I describe the brown type: the head delicately marked 

 transversely with dark-brown ; median stripe interrupted, and of various 

 colors, of which brick-red and deep-black are most conspicuous ; a small, 

 oblong, red space, surrounded by dingy-white, occupies the middle of the 

 hind margin of each segment after the fourth, and is united to a black spot 

 similarly surrounded on the interior margin of the succeeding segment ; the 

 two combined constitute what Mr. Hellins terms the arrow-head markings; 

 the dorsal surface of the tenth, eleventh, twelfth, and thirteenth segments is 

 very pale, forming a conspicuous pale patch, and this is continued beyond the 

 posterior margin of the ninth segment; each of the segments after the fourth 

 has four distant and distinct white dots arranged in a square ; those on the 

 tenth, eleventh, and twelfth segments are surrounded with small black mark- 

 ings; the sides are pale; the belly is also pale, but has darker stripes; it 

 feeds on the several varieties of cultivated cabbage (Brassica), on nasturtium 

 (Tropa j o/u)» majus), and other garden-plants, and is double-brooded, both in 

 a state of nature and in captivity. The second brood of caterpillars is full- 

 fed at the beginning of September." — Newman's British Moths. 164. 



Rheumaptera intermediata Packard. Plate 8, fig. 73; plate 9, fig. 1. 



Melanippe intermediata Gueu., Pbal., ii, 395, 1857. 



Walk., ListLep. Het. Br. Mils., xxv, 1296, 1862. 



6 <? and 2 9. — Dusky cinereous, with somewhat of a flesh-colored 

 tint. Fore wings with two dark, parallel, wavy, black lines at the base; 

 the base of the wing being either clear or dark reddish-brown or dusky, 

 but not so dark as in R. lacustrata ; beyond the dark lines and the median 

 band, the wing is more or less cinereous, with two or three dusky lines, 

 or sometimes a single reddish-brown band; the median band is black and 

 heavy, limited on each side by two heavy wavy or scalloped black lines ; 

 the band varies much in width, especially near the inner edge of the 

 wing; it also varies in the prominence of the angle on the fust median 

 vein, which is large and composed of two or three scallops (while thai of U. 



