150 LEPJDOPTEKA. 



found two specimens in the dock warehouses at King's Lynn, 

 in ] 887, I know of no other localities for it in the United 

 Kingdom. Abroad it appears to have been introduced into 

 North-Western Germany ; and other localities given for it 

 are Crete, Sicily, Bithynia, Southern India, and Central 

 Africa. 



Genus 5. ACHROIA. 



Antenuaj simjale, the basal joint rather thickened ; palpi 

 small, projecting, but rather depressed ; tongue hai'dij- per- 

 ceptible ; head smoothed forward ; fore wings ovate ; costal 

 cell very large ; discal cell narrow; hind wings not broad, 

 the cross-bar present, oblique ; vein 5 absent ; tibiaj of the 

 first pair of legs flattened. 



We have only one species. 



1. A. grisella, Fah. ; alveariella, D.L. — Expanse -i to f 

 inch (15-23 m.m.). Fore wings ovate, shining grey-brown, 

 without markings. Hind wings shining brownish-white. 

 Face yellow. 



Antennas of the male simple, slender, placed widely apart, 

 olive-brown, with a darker basal tuft ; palpi rather short, 

 depressed ; set far apart, yellow-brown ; face broad and flat, 

 yellow ; the head so closely compressed as to appear as face 

 only ; thorax shining olive-brown ; abdomen slender, pale 

 brown. Fore wings narrowly ovate ; apex bluntly rounded ; 

 hind margin fully curved right round the anal angle ; colour 

 shining olive-brown, without markings ; cilia concolorous. 

 Hind wings narrow and small, veiy flatly rounded behind, 

 and almost pointed at the apex ; silky browuish-white ; cilia 

 olive-brown. Female similar. 



Underside of the fore wings shining smooth olive-brown : 

 hind wings paler. 



On the wing in June and July, and, as a second generation, 

 in October. 



