196 PROMINENTS. 
with sand on the outside. Like all members of the Prom- 
inents the larva remains a long time unchanged inside this 
cocoon, which is one reason why in captivity the adult in- 
sects are so difficult to rear. 
“The moth is purplish-gray, tinged with sea-green at 
base and along costa of the fore-wings; frequently with a 
buff-colored apical patch in the male. Discal spot black, 
linear, and followed by a blackish shade. Transverse lines 
faint, blackish, wavy, the outer lines succeeded by areddish- 
brown shade. A series of subterminal dashes, and a few 
white marks. Hind-wings whitish in the male, dark-gray 
in the female. Expanse 30 mm.” Both moth and cater- 
pillar are illustrated in Figs. 114 and 115, Plate XIX. 
Two other Prominents occur in Minnesota, and some- 
times they are found in large numbers, showing that their 
larve, which feed on the leaves of the apple, hawthorn, 
walnut, basswood, maple and oak, are more or less injur- 
ious, though they never have been numerous enough to 
cause serious injury. The descriptions given by Beuten- 
mueller, in his ‘‘ Deseriptive Catalogue of the Bombycine 
Moths, etc.,’’ are given below. 
Heterocampa manteo Doubl. 
‘*Moru.—Fore-wings ash-gray, varying from light to 
dark gray, with three scalloped, darker, transverse lines, 
the scallops filled with light gray. A large discal pale-gray 
spot containing two small black dots; costa belore apex 
with short black dashes. Terminal edge notched with black 
dots. Hind-wings uniform mouse color, fringes paler. Ex- 
panse, 40-50 mm. 
‘“ CaTERPILLAR.—Head dull opaque umber, with a broad 
darker brown line edged with white on each side meeting the 
vertex. Body green with a broad subdorsal and two nar- 
row yellow lines. The sides of the first three segments 
dotted with reddish pink, and there is a reddish streak on 
