230 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



Expanse. — Male, 26 mm. 



Habitat. — St. Jean, Maroni Riv^er, French Guiana. 



Tj/pe.— Cat. No. 8634, U.S.N.M. 



Family NOTODONTID.E. 



Genus CALLEDEMA Butler. 

 CALLEDEMA ARGENTA, new species. 



Palpi brown, whitish in front. Head brown with whitish tufts at 

 base of antennte. Collar olivaceous brown; thorax with whitish and 

 violaceous hairs. Abdomen brown above, fawn colour below; legs 

 streaked with violaceous brown. .Primaries violaceous brown, the 

 veins on median space paler; an indistinct, wavy, pale, basal line; an 

 antemedial olivaceous line across cell, not reacliino- inner margin, 

 broadly bordered with silvery white which is finely toothed towards 

 base, and outwardly prolonged along vein 6 to submarginal line; 

 a broad silver}^ yellow streak from end of cell to sul)marginal line, 

 enclosing there a small brown spot; a geminate wavy darker outer line, 

 not visible on silvery streak; a submarginal white line, inwardly 

 curved below costa, outwardly curved from vein 5 to inner angle, and 

 edged outward!}^ above vein 4 by yellow, which broadens near costa 

 to apex, and is interrupted by a dark line; oblique yellowish lines 

 from this space to outer margin at veins 2, 3, and 4; veins on outer 

 margin whitish. Secondaries violaceous brown. Underneath paler 

 violaceous brown, the outer margin of primaries broadly whitish mot- 

 tled with brown, and with marginal black lunules; two black points at 

 apex; secondaries whitish at apex, fringe whitish. 



Expanse. — 43 mm. 



Hah/tat. — St. Laurent, Maroni River, French Guiana. 



Tyjje.—Q?it. No. 8635, U.S.N.M. 



CALLEDEMA AREMA, new species. 



Head and thorax reddish brown; patagia violaceous-grey. Abdo- 

 men brown with fawn color hairs at base. Primaries violaceous 

 brown; the costa tinged with reddish; the inner margin lilacine brown; 

 veins 2, 3 and 4 speckled with grey and black; a silvery yellow ante- 

 medial spot below cell, crossed by a dark line, and followed by some 

 raised dark brown .scales; a white transver.se line in cell; a dark brown 

 spot at end of cell, followed by a silvery white line between veins 4 

 and 5 and containing a brown spot, where it joins the submarginal 3^el- 

 lowish band, which is curved from costa and apex to vein 4, inwardly 

 edged by a white line which continues to inner angle; a pale brown 

 line on the submarginal band, partly followed by a dark brown line 

 from just above vein 6 to vein 4; fine oblique marginal lines below 



