242 TRANS. ST. LOUIS ACAD. SCIENCE. 



The median space between lines 5-6 is about as wide as the terminal, and 

 has a small discal ring and a costal spot. Fringes white. Under surface 

 fuliginous, with the borders white, the costal and terminal marks mostly 

 repeated, and with two duskier shades across subterminal space. Seconda- 

 ries fuliginous, with terminal black spots between the veins; lunule, and 

 two more or less distinct transverse bands, duskj' : fringes white : under 

 surface paler, with the dusky bands more strongly relieved. Head beneath, 

 front femora and tibiae inside, two spots on middle and hind tibiae, tarsi, 

 pectinations of antennae, a mark (obsolete in one specimen) between eyes 

 and bases of wings, aero s the shoulders, around the teguhe and at base 

 of thorax; a spot on each tegula and two in middle of thorax, and a trans- 

 verse band on anterior edge of each joint superiorly — brown-back. 

 Alar expanse 1. 25-1. 50 inches. Length of body 0.60-0.75 inch. 



Described from three ?'s, one bred by myself, one by Miss M. 

 E. Mnrtfeldt of Kirkwood, Mo., and one by J. R. Muhleman of 

 Woodburn, Ills. — all from Willow-feeding larva?. In each case 

 the larva; were supposed to belong to borealis. and no critical 

 descriptions were taken. The variation is not meat : in one spe- 

 cimen the wings are noticeably shorter and more rounded than 

 in that chosen for my figure, and the marks on primaries are less 

 clearly defined: the bands on secondaries are also scarcely indi- 

 cated, or only by faint spots on the veins, while the costal marks 

 on primaries inferiorly coalesce so as to form but 3 broad marks. 

 \F'g- 13] The eggs of Cerura are hemispheri- 



- , -l'j£ : ''- cal, i.e. very Hat on the attached side. 

 P&ri'fjiptS^C? an d while the larva? of multiscrifta 

 and borealis so closely resemble each 

 / ,:• other, their eggs are easily distin- 



guished ; those of the former being 

 |»^ pale yellowish-green, and those of the 



Cerura multiscripta. latter jet-black. 



The species approaches nearer to the European bicitspis than 

 to the N. A. borealis. I am unacquainted with the scitiscripta 

 Walker, of Grote & Robinson's kt List" ; but as Mr. Grote has 

 seen multiscripta and pronounced it new, I have no hesitancy in 

 describing it. 



