92 INSECUTOR INSCITIit MENSTRUUS 



Olethreutes mochana, new species. 



Labial palpi light reddish ochreous with the terminal joint and the tuft 

 on second joint touched with aniline red. Antennae reddish fuscous. 

 Face, head, and thorax light ochreous strongly mottled with reddish and 

 purplish brown. Forewings with the reddish ochreous ground color 

 strongly mottled by many transverse striations of purplish and black ; cos- 

 tal edge with a series of black dashes, alternately a large and a minute 

 one, and with the intervals ochreous ; arising from the intervals on the 

 outer half are narrow, metallic, lead colored outwardly curved lines ; par- 

 allel with the terminal edge is a perpendicular silvery streak preceded by 

 four or five blackish dots on ochreous ground. Hindwings dark fuscous. 

 Abdomen dark fuscous with silvery underside. Legs light fuscous with 

 black tarsal annulations. Alar expanse : 1 2 mm. 



Habitat : Mocha, British Guiana. 



Food plant : Vochysia guianemis. 



U. S. Nat. Mus. type No. 1601 7. 



Olethreutes guiana, new species. 



Labial palpi reddish ochreous, whitish on the underside. Antennae 

 light ochreous with dusky tips. Head reddish ochreous. Thorax ochreous 

 mottled with brown. Forewings light brown much mottled by transverse 

 striations of dark brown ochreous and metallic blue ; costal edge dark 

 brown with three pairs of light ochreous, outwardly curved streaklets, 

 first pair at basal third, second pair beyond the middle, and third pair at 

 apical fifth ; from the center of each of these ochreous streaklets origi- 

 nates a bluish metallic line, of which the first two subdivide cind run in 

 irregular zigzag course across the wing, while the last four are directed 

 outward and unite on the terminal edge below apex ; a perpendicular sil- 

 very line at tornus is edged with blue and preceded by three or four 

 small black dashes ; cilia ochreous brown, upper half with a basal blue 

 metallic line. Hindwing dark brownish fuscous. Abdomen dark fuscous 

 above ; entire body light straw colored on the underside. Legs light 

 ochreous with blackish tarsal annulations. Alar expanse : 11-12 mm. 



Habitat: Georgetown, British Guiana. 



Larvae feed on a common weed in the cane field. 



U. S. Nat. Mus. type No. 16018. 



Dale of publication, July 21. 1913. 



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