114 
EXOTIC MICROLEPIDOPTERA. 
outlined fuscous, a discal cloud of fuscous irroration beyond 
this; second line irregular, strongly excurved, obscurely whitish 
edged fuscous, edges ochreous-yellow on costa ; apical area orange- 
yellow, enclosing a longitudinal-oval white spot; three black dots 
on terrnen below middle : cilia whitish, a dark grey subbasal line 
and apical shade. Hindwings 3 and 4 approximated ; grey-whitish, 
apex slenderly grey ; cilia whitish, two greyish lines round apical 
area. 
Assam, Khasi Hills, July ; Ceylon, Madulsima, May ( T . B. 
Fletcher ); 13 ex. Nearly allied to minutalis Hamps., of which I 
have a good series from the Khasi Bills, but distinguished by the 
form of first line, which in that species is curved and much more 
oblique towards dorsum, and the ground-colour much more infus- 
eated generally, rendering the lower half of discal spot conspicuous. 
Diptychophora mitis, n. sp. 
c 3 2 • 10-11 mm. Head whitish. Labial palpi yellow-whitish, 
apical portion suffused dark grey. Maxillary palpi whitish, base 
tinged yellowish beneath* a grey bar. Thorax whitish, partially 
sprinkled grey. Abdomen whitish, some grey scales at base of 
segments 5-7. Lore wings whitish, thinly sprinkled grey, first line 
indistinct, obtusely angulated towards costa, obscurely suffused 
grey, lower portion sometimes partly yellowish ; some grey suffusion 
in disc beyond this, and a small spot of dark grey suffusion near 
angle; discal spot obsolete; second line slender, pale yellowish, 
edged grey, strongly excurved from costa to fold ; apical area light 
yellowish, suffusedly edged grey, separated from second line by a 
whitish streak, and enclosing an acute-triangular costal spot edged 
grey ; a slender grey terminal fascia, beneath middle marked three 
black dots, interspaces tinged yellowish : cilia white, a grey 
subbasal line and apical shade. Hindwings 3 and 4 approximated ; 
grey-whitish ; cilia whitish, a grey subbasal line. 
Assam, Khasi Hills, March ; 3 ex. The genus Diptychophora is 
one of the most primitive forms of the Crambidce , and it is desirable 
to ascertain its original home; it has four distinct centres of 
development—India, Australia, New Zealand, and Brazil—of which 
India appears to be primary, and the other three secondary to it, 
Australia being reached by way of the Malay Archipelago, New 
Zealand by way of New Guinea and Fiji, and Brazil by way of 
Africa. The usual larval habit is probably to feed on moss in damp 
forest, generally within the tropics, and the development of a 
specially successful strain in the temperate climate oi New Zealand 
would seem to haye been a fortunate accident not repeated else¬ 
where. 
Argyria trizona, n. sp. 
<3 2- 33-15 mm. Head white or ochreous-whitish, sometimes 
a grey spot on forehead. Labial and maxillary palpi ochreous 
suffusedly mixed dark grey, apex white. Thorax white or whitish 
mixed dark fuscous and ochreous. Abdomen grey, apex sometimes 
