EEOSTA. 
103 
numerous dark strigse. Fore wing with an indistinct, highly-concave brown band from just 
before the middle of costa to middle of inner margin ; a distinct postmedial band, concave to 
second medial nervule, then convex to inner margin; a dark lunulate submarginal line. 
Hind wing with waved and curved brown antemedial and postmedial bands ; a lunulate dark 
line from the first subcostal tail to near anal angle. Underside whitish, with dark strigae. 
Nearest in markings to D. obscuraria, but whiter, and with the bands more regular. 
D. obscuraria has the apex of fore wing acute, the tails of hind wing longer, and the outer 
margin emargiuate between the tails and also towards anal angle. Also near D. lUacina, 
which has the apex of fore wing somewhat acute ; the outer margin of hind wing emargiuate 
between the tails, and the bands bent outward towards the anal angle. 
Erosia unicauda. (Plate CL. fig. 21.) 
Expanse f inch. 
Male. Apex of fore wing rounded, as also the outer margin of hind wing except for one 
slight tail at first subcostal nervule. Wings pale purplish grey, irrorated with dark scales. 
Fore wing with costal area darker, a large oval spot on it with first brown, then a pale 
border, one third from apex and extending to lower end of cell ; a smaller dai*k subtriangular 
spot, with pale border, on the inner margin two thirds from base ; a series of blackish sub- 
marginal lunules with pale borders inwardly, and obsolete towards outer angle. Hind wing 
brown ; antemedial and postmedial curved narrow bands ; some indistinct pale-ljordered 
lunules from tail to anal angle. Cilia of both wings black. 
Nearest in markings to E. binotata, but quite distinct in shape and coloration. 
Erosia longipennis. (Plate CL. fig. 20.) 
Expanse |- inch. 
Male. Foi'c wing long ; apex rounded ; inner margin more excised than in the other 
species of the genus : hind wing with costa excised towards apex ; outer margin with a slight 
tail at first median, and a more pronounced one at the subcostal nervules, and highly irregular 
in outline. Both wings smoky black : hind wing with an indistinct darker medial band. 
This species may be closer to the genus Gathynia, the hind wing is more excised and 
the tail longer. 
Erosia fulvilinea. (Plate CL. fig. 19.) 
Expanse | inch. 
Male and female. Apex of fore wing slightly acute; hind wing with pronounced tails at 
first subcostal and second median nervules. White : fore wing with some yellow strigie near 
the base, and dark ones along the costa ; curved antemedial and postmedial double yellow 
