HISTOKICAL. • 7 
pale brown eyes and palpi. It measures about three-eighths of an 
inch in length. The hornlike process extending above and between 
the eyes is prominent. 
The pupal stage is passed in a cocoon (fig. 1, g) of rounded oval 
form, looking not unlike a very small puffball. It is chocolate colored, 
of firm, nearly parchment-like consistency, and roughened opaque on 
the outer surface. It measures about four-tenths of an inch in its 
longer diameter and three-eighths inch in the shorter. 
HISTORICAL. 
Among the notes of the Bureau of Entomology is one copied from 
Riley's notebook recording the occurrence of the larvae on chestnut 
at South Pass, 111., in August, 1869. It contains a good description 
of the larva, and states that it feeds on the edges of the leaves, de- 
vouring every particle as smoothly as if cut with a pair of scissors. 
Pupation takes place about September 20. It is worthy of note that 
Riley was of the opinion that the end of the lid of the cocoon was 
5^^$^ 
Fig. 1. — The rose slug-caterpillar (Euclea indetermina) : a, Female moth; 6, male an- 
tenna ; c, larva, dorsal view ; d, larva, lateral view ; e, spine of larva, much enlarged ; 
f, pupa; g, cocoon. All enlarged; e, greatly enlarged. (Original.) 
cut by the larva before transformation to pupa, while it is quite 
obvious that the cephalic armament of the pupa is designed for that 
purpose, the pupa constantly wriggling around and around, thus 
making the perfectly circular flap. 
October 7, 1883, larvae were found feeding on oak in Virginia, and 
at another time feeding on paw paw when in bloom at Point of 
Racks, Md. 
August 3, 1889, this species was received from Yineland, N. J., 
where it was taken on Kansas plum. 
