6o 



Cocoons constructed on thorn trees usually hang during the 

 winter ; the petioles being short, several strands of silk are firmly 

 attached to the twigs. In a few cases I have noticed the twig 

 and petioles coated with silk approaching the habit of C. prome- 

 thea. 



Cocoons spun by larvae, fed on basswood, oak or birch, are 

 usually large and the silk of superior quality. 



In long and warm seasons about 50 per cent, are double- 

 brooded, but this is against the increase of the species, as cold 

 weather usually sets in before the larvae are fully matured. 



DESCRIPTION OF A NEW HYPERCHIRIA FROM 



ARIZONA. 



By B. Neumoegen. 



HYPERCHIRIA PaMINA. n. sp. 



$. Antennae dark luteous. Head and thorax light olive 

 color. Patagiae with light yellow tuft at the end. Primaries 

 falcate, light olive, somewhat darker at base, but lighter along 

 exterior margin. An irregular, transverse yellowish line, with 

 anterior brownish border from very near apex to the centre of 

 interior margin. An irregular square discal blotch of olive color, 

 with dark dots at the intersection of nerves. A white testaceous 

 lateral line at thorax, between the base of costa and base of 

 interior margin. 



Secondaries very light olive color. The ocellus blackish 

 blue with white centre, sprinkled with bluish dust. An irregular 

 semi-circular black line, from costa to and partly along abdominal 

 margin, enclosing the ocellus. The field enclosed by this line, of 

 bright, light yellow color, somewhat fading towards base. In 

 the space between this line and exterior margin, and running 

 parallel to both, a purplish, rose-colored, irregular band termi- 

 nating very near anal curve. A conspicuous, bright rose-colored 

 tuft from base, along abdominal margin, fading toward the centre 

 and anal curve. Abdomen fawn drab, with bright rose-colored 

 segmentary bands. 



Beneath, primaries and secondaries fawn drab. The trans- 

 verse line of primaries of purplish rose tint, the interspace be- 

 tween this line and base being likewise of a lighter purplish 

 rose, fading towards costa. Discal spot conspicuous, black with 

 white central dot. A white discal spot on secondaries and indi- 

 cations in purplish rose-color on the same, of the semi-circular 

 line and its parallel band. 



? . Of a lighter olive tinge. The ocellus and its white 

 centre on secondaries more pronounced than in $ . 



