DiPTER YGTA PrODENTA EuPLEXIA. 237 



Europe (except Holland and Belgium) and Northern Asia in June and July, but is not 

 common ; it may be attracted by sugar. The larva is yellowish-brown, bluish on the sides, 

 with dark oblique dashes on the back, a dark stripe on the sides, and two yellow spots on 

 the sides of the 12th segment. It feeds on bilberry from autumn to April. 



GENUS XXVI. — DIPTERYGIA (STEPH.). 



Fore-wings considerably broader behind, with a curved oblique hind margin, a distinct 

 hinder angle, and long and much waved fringes ; the crest of the thorax is higher and 

 straighter in front, and projects into a point above the 1st segment of the abdomen, which 

 is strongly crested on the 3rd and 4th segments. The subterminal line is absent ; but in 

 other characters the genus resembles Hadena. The only species, * D. Pinastri (Linn.), 

 has dark brown fore-wings ; the transverse lines are single and black, the inner line with 

 long teeth, and the elbowed line not dentated, but projecting considerably in the middle, and 

 beyond it the pale brown colour of the lower half of the suffused submarginal band forms a 

 pattern resembling the outspread wing of a bird ; the three stigmata are narrowly surrounded with 

 black, and the hind-wings are brownish-grey. Expands from 1} to li inches. It occurs in 

 most parts of Europe and Western Asia in June. The larva is chestnut-brown, marbled with 

 darker, with a white line on the back, and a dark brown stripe on the sides, whitish below, and 

 with oblique brown dashes above. It feeds on low plants from July to September. The moth 

 is figured at PI. ^i, Fig. 5. 



GENUS XXVII. — PRODENIA (GU£N.). 



Allied to Hadena, but the thorax clothed with raised scales, and not crested in front ; the 

 abdomen covered with very long silky hair, which projects beyond the ends of the segments, 

 and forms a rather long tuft at the extremity in both sexes ; the antennae of the male are 

 ciliated. The only European species, P. Littoralis (Boisd.), from South-Eastern Europe, Southern 

 Asia, and Madagascar, has brown fore-wings, with violet-opalescent spaces in the basal and 

 marginal areas ; the markings nearly as in Hadena Atriplicis, but the oblique spot not so 

 pale ; hind-wings shining opalescent white in both sexes. E.xpands about i^ inches. The 

 larva feeds on low plants from November to February, and hides itself under stones ; and the 

 moth appears in March and April. 



GENUS XXVIII. — EUPLEXIA (STEPH.). 



Fore-wings with the hinder angle and the iV(?t/««-pattern distinct ; the fringes almost 

 jagged ; hind-wings short and somewhat projecting in the middle, the 3rd segment of the 

 abdomen very strongly crested, and the tongue thick. The only species, *£■. Ljicipara 

 (Linn.), has violet-brown fore-wings, darker in the central area, and on the upper part of the 

 hind margin, with indistinct double transverse lines, which are nearly straight and not dentated> 

 and converge towards the inner margin ; the orbicular stigma is large, dark bluish-grey, and 

 concave above ; the reniform stigma is straw-coloured, and the subterminal line is slender, 

 straw-coloured, slightly dentated, and spotted with blackish on both sides above the middle; 

 hind-wings yellowish-white; brownish-grey towards the hind margin. Expands about \\ inches. 

 Common in Northern and Central Europe, and in Northern and Western Asia, in June and 

 July. The larva is green, with dark angular spots on the back, and a white stripe on the 



