NO. 3660 MICROLEPIDOPTERA, XVII—CLARKE 5 
fuscous with a sprinkling of white-tipped scales; posterior tuft of 
thorax with mixture of reddish-brown and white-tipped scales. Fore- 
wing ground color grayish fuscous, much of the area overlaid with 
violaceous-metallic scales; on inner angle a narrow, longitudinal, 
ferruginous dash; at basal fifth an inwardly oblique, blackish-fuscous 
patch to fold, then outwardly to dorsum; from middle of costa, to 
dorsum at basal third, a blackish-fuscous transverse band, strongest 
about midway across wing; at end of cell a small, blackish-fuscous 
spot; slightly beyond end of cell, obliquely, a blackish-fuscous trans- 
verse band extends nearly to tornus; from apical third of costa a 
blackish-fuscous transverse band, broadest at vein 7, extends to and 
narrows at tornus; along costa several small patches of white-tipped 
scales; cilia fuscous. Hindwing ocherous white, heavily mottled with 
fuscous; cilia grayish fuscous with a very narrow, lighter, basal line. 
Foreleg pale ochraceous buff; femur and tibia strongly overlaid with 
fuscous exteriorly; tarsal segments almost wholly fuscous. Midleg 
similar to foreleg but not so strongly marked with fuscous; hindleg 
ochraceous buff with slight fuscous irroration and small fuscous 
patches at tibial spurs. Abdomen dull buff, suffused and irrorate with 
fuscous. 
Male genitalia slide JFGC no. 11622. Harpe subrectangular; 
cucullus bluntly pointed; ventral edge of harpe produced into a 
slender pointed process before cucullus. Transtilla with long, smooth, 
median process. Uncus curved, slender. Vinculum evenly rounded, 
coalesced. Tegumen about two-thirds the length of harpe. Anellus a 
strongly sclerotized, curved, oval plate. Aedeagus stout, distally 
terminating in a sharp point ventrally; dorsally, from about middle, 
a long, curved process; cornuti, three long, closely compact, clusters 
of spines. 
Holotype: U.S. National Museum No. 69729. 
Type-locality: Guatemala, Volcan Santa Maria. 
Distribution: Known only from the type-locality. 
Described from the unique male holotype (Schaus and Barnes, 
ads") 
This species resembles the North American Hysterosia birdana 
Busck but lacks the unbroken, dark apical area of that species; 
moreover, the median portion of the transtilla of birdana is broad 
and armed with numerous, small, dentate processes, the cornuti are 
one or two, and the aedeagus lacks the long, curved, dorsal process 
of iodes. 
