60 C. B. WILLIAMS. 



Coloration. — Body and legs almost uniformly pale yellow, the fore part of the 

 head very slightly darker. Antennae a little darker brown, except for the bases 

 of the third and fourth segments, which are very pale. Eyes black ; ocellar pigment 

 reddish orange. Wings brown, distinctly darker than the body, with the central 

 portion of the outer half a little paler than the margins. 



Head not quite twice as broad as long ; the cheeks not arched. Eyes large, very 

 slightly projecting ; distance between the eyes greater than the width of the eye ; 

 distance from the eye to the back of the head about half the length of the eye. 

 Ocelli on a level with the middle of the eye, the three forming an obtuse triangle ; 

 the posterior pair about twice as far apart as they are distant from the margin of 

 the eye ; the anterior ocellus directed forward. Ocellar and post-ocular spines 

 and a few smaller ones on the vertex, pale and indistinct ; the ocellar spines arise 

 from the sides of the ocellar triangle. Mouth-cone bluntly rounded, reaching about 

 two-thirds across the prosternum. Maxillary palps short, three-segmented ; 

 the basal segment short, the two others subequal. Labial palps slender, apparently 

 two-segmented. Antennae eight-segmented, relatively long, being three and a 

 half times the length of the head : the first segment short and broad ; the second 

 barrel-shaped ; the third with a distinct pedicel and narrowed to a slight neck at 

 the apex ; the fourth widest at about half its length, but narrowing rapidly 

 apically to a long neck ; the fifth with a distinct ring joint at its base, truncate 

 apically ; the sixth long and gradually tapering ; the eighth half as long again as 

 the seventh. Forked trichomes on the third segment dorsally and the fourth 

 ventrally, that on the third segment reaching just beyond the base of the fourth, 

 and that on the fourth reaching to about one-third the length of the fifth segment. 

 Proihorax about one and two-thirds as wide as long, all angles rounded. Two 

 pale spines at each hind angle of the pronotum each about half as long as the 

 dorsal length of the pronotum ; short spines at the front angles, other small spines 

 very inconspicuous. Pterothorax normal ; at the front angle there is, more or less 

 distinct, a small double tooth-like projection in front of the base of the fore wing, 

 one portion of this is long and slender, the other short and broad. Legs normal. 

 Wings fully developed ; veins on the fore wing almost invisible, only indicated 

 by the position of the bases of the spines. On the costa there are 20-21 spines ; 

 on the fore vein two groups of 3 near the base and 2 near the apex ; on the hind 

 vein 11-13. The anterior fringe commences just distal to the base of the hind 

 vein; the posterior fringe extends a little further towards the base of the wing. 

 Hind wings paler than the fore wings, with a rather broad dark, central vein 

 distinct almost to the apex of the wing. The minute setae on both wings are dark 

 and conspicuous. Abdomen normal ; the ninth segment longer than the tenth ; spines 

 on the last two segments pale, those on the ninth segment about as long as the 

 tenth segment, those on the tenth segment a little longer. No trace of comb-like 

 structure on the hind margin of the eighth tergite. 



$ unknown. 



Described from about a dozen females collected on Cattleya orchids in Port of 

 Spain, Trinidad, on various dates during 1915 and 3916 by F. W. Urich and C. B. 

 Williams. 

 Type in the author's collection. 



