276 LEPIDOPTERA. 



Moncrieffe Hill, whence it seemed to have disappeared. In 

 Ireland widely distributed but very local ; in Kerry found 

 more especially on the bogs, in Galway upon the limestone, 

 in Londonderry common on coast sandhills. Abroad it is 

 found throughout Central Europe and the temperate portions 

 of Northern Europe ; the northern portions of Italy, Spain, 

 and Turkey ; the Ural Mountain district, Asia Minor, Tartary, 

 and the mountainous regions of Central Asia. 



Family 6. DELTOIDES. 



Palpi long and slender, either sickle-shaped, the second 

 joint curved up, or porrected, fringed with hair above and 

 with a sharp frontal tuft ; legs, especially the tarsal joints, 

 long and slender ; wings irregular in their neuration, but 

 vein 5 of the hind wings well developed. 



In many species of this family the larvae have the curious 

 habit of feeding upon dead fallen leaves. 



Genus 1. AVENTIA. 



Antennas ciliated ; palpi not very long, second joint trian- 

 gular ; eyes naked, without lashes ; collar raised ; thorax 

 otherwise smooth, slender ; abdomen also smooth and slender; 

 fore wings falcate, the hind margin excavated ; hind wings 

 rather elongated. 



We have but one species. 



1. A. flexula, Schiff. — Expanse 1 to 1\ inch. Body 

 slender, fore wings somewhat trigonate, hind margin deeply 

 concave below the apex ; hoary-brown with two oblique double 

 direct brown transverse lines ; a chocolate cloud below the 

 apex. Hind wings whitish-brown with a similar double 

 transverse line. 



Antennas of the male rather short, simple, minutely ciliated, 

 light brown ; palpi not very long, horizontal, porrected, pale 



