126 LLOYDS NATURAL HISTORY. 



base, but having a tendency to form transverse rows towards 

 the hind margin. The hind-wings are almost white, with a few 

 faint black spots behind. Abdomen blue-black, varied on the 

 back and sides with orange-yellow ; legs white, the extremities 

 widi black rings. 



The larva, when young, has one half orange-coloured and the 

 other black. At its full growth it becomes brownish-black, 

 with an orange-red band along each side ; the incisions and 

 legs being of this colour also. The hairs are placed on 

 tubercles alternately nearer the anterior edges of each seg- 

 ment, so that they form a somewhat broad band, and leave the 

 rest of the body naked. When about to change into the pupa, 

 it spins a thin gummy yellow web, something like that formed 

 on the same occasion by the common Tiger Moth. Some ob- 

 served by Abbot spun on the 14th of March came out on the 

 1 8th of April ; others spun on the 15th of June appeared on 

 the wing on the 7th of July. 



It feeds on wild sun-flower {Polymnia), wild cherry, per- 

 simmon {^Diospyros virgiiuana\ and several other plants. 



Another very pretty genus allied to this is Arachnis, Packard. 

 It includes a few species found in Mexico, California, «S^c., 

 with grey fore-wings and pink hind-wings, both covered with 

 slate-coloured or brown spots or partly connected markings 

 bordered with black. They expand about two inches. 



SUB-FAMILY V. SPILOSOMATIN^: (ERMINES). 



The preceding Sub families of ArdiidcE have been almost 

 exclusively American, but we now come to a group which is 

 mainly Asiatic, though it is fairly represented in other parts of 

 the world, including Europe. The Moths have moderately broad 

 white, yellow, or brown wings, more or less spotted with black; 

 the fore-wings are not much longer than the hind-wings, and 



