4 LEPIDOPTERA. 



before in the district, but it afterwards spread all over the 

 hill. There is also a record in Argyleshire. In Ireland it is 

 locally abundant in Wicklow, Waterford, Cork, Kerry, Gal- 

 way, Limerick, Roscommon and Kings County. Abroad it 

 has a wide range through Central Europe, Eastern Spain, 

 Central and Northern Italy, Corsica, Livonia, Southern and 

 Eastern Russia, Armenia, Tartary, China, and Japan, where it 

 is very abundant. 



Genus IL STRENIA. 



Antennae simple ; palpi minute ; head rough ; thorax also 

 rather rough and slender ; abdomen slender and short ; fore 

 wings thin and rather narrow, chequered ; hind wings some- 

 what elongated, faintly angulated, and with the hind margin, 

 within the cilia, scalloped. 



We have but one species. 



1. S. clathrata, L. — Expanse f to 1^ inch. All the 

 wings pale yellow or yellowish-white ; nervures black ; four 

 irregular brown-black or black stripes across the fore wings, 

 and three across the hind, produce a complete latticed pattern ; 

 cilia chequered, black-brown and white, 



Antenna3 of the male simple and rather small, ciliated, 

 black, dotted at the back with yellow; palpi verj- small, 

 dark brown ; face smooth, upper part of the head rough, 

 separated beneath the antenna by a transverse channel, 

 mottled, yellow and black ; a ridge on the neck, and also the 

 collar, black in front, mottled with yellow at the back ; 

 thorax roughened by the loose tips of the scales of the 

 shoulder-lappets, yellow dotted with black ; abdomen short, 

 smooth, yellow abundantly dotted with black, except at the 

 edges of the segments ; lateral tufts distinct, yellowish- 

 white ; anal tuft small. Fore wings blunt, narrow at the 

 base ; costa gently arched ; apex bluntly angulatt-d ; hind 

 margin gentl}^ curved ; dorsal margin straight ; colour pale 

 yellow or yellow-white ; all the nervures sharply purplish- 



