62 
MAEGAEODID^. 
Erilusa dioptoides. (Plate XX. fig. 2.) 
Erilusa dioptoides, Waller, Cat Lep. Net. Svppl. iv. p. 1377 (1865), 
Wings entirely shot with lilacine : primaries bronze-brown; two spots in the cell, a streak 
below it, a spot at base of first median interspace, and a subapical band hyaline : secon- 
daries hyaline ; veins and an irregiilar narrow outer border, bronze-brown. Body greyish 
1)rown above, whity brown below. Expanse of wings 1 inch 10 lines. 
Para [Grahame). 
Erilusa cyanea. (Plate XX. fig. 3.) 
Erilusa cyanea, Waller, Cat. Lep. Het. Suppl. iv. p. 1376 (1865). 
Primaries dark brown, feebly shot with bluish ; a whitish streak at the base and a broad 
postmedian subhyaline white spot : secondaries hyaline white, shot with bluish lilac ; veins 
and a broad outer border dark brown. Body greyish brown, shot with lilacine blue ; frons 
testaceoiis ; body below testaceous ; pectus in front and palpi golden yellow. Expanse of 
M'ings 1 inch 6 lines. 
Ega [Bates). 
Erilusa croceiceps. (Plate XX. fig. 4.) 
Erilusa croceiceps, Walher, Cat. Lep. Het. Suppl. iv. p. 1375 (1865). 
Wings pearly hyaline ; the veins and a broad outer border dark brown : primai-ies with 
the costal area, base, and inner margin brown, shot with blue : secondaries with the costa and 
abdominal area pale brown. Borly brown, bluish in front, with the head, anus, legs, and 
entire ventral surface bright ochre-yellow ; tibiae of front legs with a black terminal spot. 
Expanse of wings 1 inch 6 lines. 
Ega [Bates). 
The pi'eceding species of Erilusa are figured to show their resemblance to the Zygsenidse. 
Mr. Walker says, " This group has much resemblance, and perhaps much affinity, to the Diop- 
tidse and to the Lithosiidae ; " but this idea arose from the fact that Mr. Walker had placed 
several genera of Pyralites in those families, amongst which was the following. 
EROCHA, Walker. 
Erocha discreta. (Plate XX. fig. 5.) 
Dioptis (Erocha) discreta, WaJl-er, Cat. Lep. Bet. ii. p. 319. n. 1 (1854). 
Wings dark brown : primaries with a longitudinal black-edged pale brown central streak, 
terminating in a large rounded clavus, which encloses a reniform brown-speckled white spot : 
secondaries with a large lilac-shot hyaline white pyi'iform patch, cut by the black median 
nervure and its three branches. Body grey; head and thorax blackish; tegulae edged with 
whitish ; pectus white in the centre. Wings below paler than above. Expanse of wings 
1 inch 8 lines. 
Ega [Bates). 
