102 EEOSIID^. 



and having between them at the end of the cell a white lunulc on a black patch ; a lunulate 

 black submarginal band with white on its outer edge ; a series of antecilial black triangular 

 spots. Hind wing fuscous, with indistinct medial and postmedial bands. Cilia of both 

 wings olive and black. Underside paler : an indistinct lunula on a black patch at the end of 

 cell of both wings ; fore wing with faint postmedial and submarginal bands ; hind wing whitish, 

 with the medial and postmedial bands well marked. 



EROSIID^. 



Dirades leucocera. (Plate CL. fig. 13.) 



Expanse | inch. 



Mule. Shaped as in D. adjutaria, except that the outer margin of hind wing is not quite 

 so evenly rounded. Fore wing pale purplish brown irrorated with dark scales ; a dark 

 oblique streak from centre of costa to lower end of cell ; a pale line with dark inner margin 

 from costa one third from apex to first median nervule near outer margin ; a large semicircle 

 on the inner margin two thirds from base, black, with pale border and indigo centre ; a pale, 

 nearly straight line from apex to outer angle; the rounded outer margin bluish grey. Hind 

 wing deep chocolate ; narrow white subbasal and medial bands, the costal portion of the area 

 between them suffused with white ; outer margin blue-black, inwardly-bounded by a pale line, 

 from second median nervule to anal angle. Pure white hairs on the fold of hind wing. Cilia 

 of both wings white. Underside of fore wing pale vinous brown with dark dots, of hind wing 

 uniform white. Vertex of head and shaft of anteuuEe pure white. 



Allied to D. b'inotata, but to be distinguished from that and the other species of the genus 

 by its brighter coloration and white fold on inner margin of hind wing and white underside. 



The genus Dirades was formed for the species with this fold and with rounded outer 

 margin to hind wing in male, and all the species without the fold and with slightly tailed hind 

 wing should be placed in the genus Erosia. The species figured as D. adjutaria in Lcp. Ceyl. 

 iii. pi. 186. fig, 9 is E. verticaria, Feld. ; the species figured as D. binolata being the true 

 D. adjutaria. The species of the family Erosiidae all rest with the fore wing held more or less 

 apart from the hind wing ; this habit is carried to its extreme in Gathynia miraria, which 

 holds its fore wings at right angles to the body, and curled up into a tube, while the hind 

 wings are closely folded along the abdomen, so that the insect takes the form of a cross. 



This family has in reality no affinities with the Gcometres, the larvce being quite different 

 and nearer to those of the Bombyces, and it is probably allied to the Drepanulidas. 



Erosia albida. (Plate CL. fig. 10.) 

 Expanse ^ inch. 



Male. Apex of fore wing rounded ; outer margin of hind wing evenly rounded, except 

 fur very slight tails at first subcostal and third median uervules. Wings greyish white, with 



