GRAPE VINE. LEAVES — GARTERED PLUME. CHRYSALIS. 141 



slight tooth upon its posterior face, and two short diverging club-shaped white 

 bristles. Lower down upon the sides is a row of slight oblong elevations, one 

 on each segment, below which the breathing pores form a row of minute round 

 points, and below these an obtuse angular edge divides the lateral from the 

 under side. On the under side are four longitudinal rows of short white club- 

 shaped bristles, inclined backwards, two bristles at each point. Between the 

 two inner rows of these bristles are two rows of small, elevated, wart-like 

 pimples, which are the scars left by the pro-legs of the larva. The legs, an- 

 tennas and wings are enclosed apparently in a common sheath, the forked veins 

 of these last forming faint elevated lines upon the smooth outer part of the 

 sheath. The crysalis varies in color. One of the specimens was bright pale 

 green with a deeper green stripe along the middle of the back, and the long 

 horns and a spot on the crown of the head dull brownish yellow. The other 

 was pale brownish yellow throughout, with a black stripe along its middle. 



These insects remained at rest in their pupa state only six and 

 eight days when they hatched moths, pertainimg to the genus 

 Pterophorus in the family Alucitid.e and the order Lepidoptera. 

 The moths of this family are distinguished from all others by 

 having their wings singularly cleft into two, three or more long 

 narrow lobes, whence they were termed Fissipennes or Split- 

 winged moths by Latreille. The lobes are densely ciliated with 

 fine hairs, which, along their inner margins are very long. They 

 thus resemble the feathers of a bird, and have hence in English 

 received the name of Plumes. Their legs are long and slender, 

 and are furnished with long robust spines, of which there is a 

 single one at the tip of the forward shanks, and a pair at the 

 tip of the middle shanks, whilst the hind ones have a pair at 

 their tips and another near the middle. 



The names of all the species belonging to this family are com- 

 pounds ending with the word dactylus, meaning a finger; Lin- 

 nseus at first, when but a half a dozen species were known to him 

 (Systema Naturae, 10th edition, 1758), having supposed they 

 could all be distinguished merely by the number of the branch- 

 es of their wings, he hence numbered them two-fingered, five- 

 fingered, &c; and at a later period, when two or more species 

 were discovered which were alike in the number of their lobes, 

 he named these wing-fingered, square-fingered, &c. The species 

 of which we are speaking, at each pair of spines, has tufts 

 of scales of a tawny yellow color surrounding its hind legs 



