92 LEPIDOPTERA. 



front and projecting laterally, third segment peaked ; anal 

 prolegs absent, replaced by two long horny tails covered with 

 minute black spines. ' Head dull purple with a brown mark 

 on each lobe, outwardly edged with yellowish ; body bright 

 pea-green dotted with red-brown ; a triangular purple dorsal 

 patch on the second and third segments, its base being the 

 front edge of the second segment. From the fourth segment 

 to the tail is a broad purple dorsal blotch, attaining its greatest 

 breadth on the eighth, where it reaches below the spiracles, 

 and narrowest on the twelfth, widening again on the thir- 

 teenth. Both these dorsal patches are edged with dark brown 

 and broadly margined externally with yellow ; spiracles 

 reddish ; legs and prolegs tinged with red ; tail with a dark 

 brown patch on the under surface. Dorsal line whitish on 

 the second and third segments, subsequently grey, bisecting 

 indistinct pale spots on the sixth to the ninth, which are 

 clouded with ferruginous. (C. Fenn.) 



July to September on poplars of all species, including aspen 

 and Canadian poplar. 



Pupa similar to that of C. furmla, but larger. In a hard 

 cocoon of silk and scraped bark, placed under loose bark, or 

 in a crevice, or chink, or on the smooth bark of a poplar tree, 

 even sometimes on an excrescence, but always so con- 

 structed as precisely to resemble the adjacent surface, and 

 render it exceedingly difficult of discovery. In pupa through 

 the winter. 



The moth flies at dusk and into the night, and may, now 

 and then, be captured flying softly about the outer low 

 branches of a spreading poplar. Later it is readily attracted 

 by a strong light, and may sometimes be found sitting on a 

 gas lamp. In the daytime it sits with very outstretched legs 

 on the trunk or a branch of a poplar, or on neighbouring 

 palings, and looks exactly like a ripe cottony catkin or an 

 entangled feather. Rarely found in woods, but much more 



