BOARMW.E— PER/CALL! A . 97 



Genus 21. PERICALLIA. 



Antennas pectinated in both sexes ; palpi small ; head rough; 

 thorax thick, rather downy with short soft raised scales ; 

 abdomen rather short, smooth and tapering; fore wings 

 pointed at the apex and angulated a little below it ; costa 

 much arched at the base ; hind wings scalloped behind, 

 deeply so just above the middle. 



We have but one species. 



1. P. syringaria, L. — Expanse 1| to If inch, antennae 

 pectinated in both sexes ; costa of fore wings greatly arched 

 from the base, colour light purple-brown shaded with orange 

 and on the costa with white ; below the apex is a very large 

 orange blotch; hind wings more uniformly purple-brown. 

 Female paler, ting^ d with olive. 



Antennae of the male pectinated with short, curved, ciliated 

 teeth, purplish-brown ; palpi small, horizontal, purple-brown ; 

 head grey-brown, rather smooth, a deep transverse furrow 

 lies just beneath the antennas, thorax not broad, densely 

 covered, as also is the base of the abdomen, with long loose 

 fulvous hair-scales; abdomen otherwise smooth, purple- 

 brown ; lateral and anal tufts small. Fore wings somewhat 

 rhomboid in shape ; costa very strongly arched from the 

 base to nearly one-half its length, then hollowed almost to 

 the apex, which is sharply pointed ; hind margin immediately 

 below it hollowed into a small concavity, then slightly angu- 

 lated and projecting, but below smoothly waved and faintly 

 curved; dorsal margin rounded and ciliated; colour soft pale 

 purple-brown faintly clouded with orange ; first line repre- 

 sented by a lilac-w^hite shade, broadly triangular on the 

 costa, otherwise slender and curved ; the second line also 

 arises as a lilac-white costal blotch, then is sharply angled, 

 and oblique to the dorsal margin, red-brown ; between these 

 two lines is another, or slender central shade, dark rust- 

 brown, arising close to, and parallel with, the second line, 

 VOL. VII. G 



