168 Proceedings of the Biological Sociefi/ of Washington. 
margin just ))eliin(I eyes, thence gently converging to l)asal tliree-tentlis, 
and widening again to base, tlie relative widths of the head at these ])oints 
being in the relation of 84:31:37; lateral surfaces faintly subreticulate, 
sparselj'^ sj)inose; i)ostocular bristles pointed, about one-half longer than 
eyes. Eyes about one-tifth as long as head, abruptly protruding, lateral 
margins battened j:)osteriorly. Ocelli moderately large, closely approxi¬ 
mate; anterior ocellus situated on extreme vertex, directed forward; 
posterior ocetli disHncttn in front of anterior margin of eyes. Antenme 
inserted on ventral surface, seven-segmented, 1.8 times as long as head; 
segments 1 and 2 shortest, subequal in length ; 3-6 claviform, 4 sliglitlj' 
longer than 3 ; 7 fusiform, slightly longer than 6, with a faint suture on 
ventral surface at apical fifth. Color of antenna?: Segments 1 and 2 
blackish brown ; 3 browni-sh white, slightly darkened hasally, aj)ical third 
dark brown-black; nearly opaque btack, slightly brownish apically. 
Sense cones long, slender; formnla: 3, 1-2; 4, 2-2; 5, 1-1-f’; 6, 1-1-f'; 
7 with one on dorsum at apical three-fourths. Mouth cone very blunt, 
brotylly rounded, nearly attaining mesosternum. 
Prothorax along median dorsal line about .35 as long as head and 
(inclusive of coxae) about three times as wide as long; all usual bristles 
present, pointed; posterior marginals longest, about equal in length to 
postoculars; i)osterior angulars two-thirds as long ; other bristles subequal, 
about one-third as long as posterior marginals. Pterothorax slightly 
narrower than prothorax, sides nearly parallel. Wings long, closely 
fringed, abont 11 times as long as broad; fore wings clouded with brown, 
darker hasally, with three more or less distinct longitudinal bands in 
basal two-thirds; posterior margin with about 44 interlocated hairs near 
apex. Legs slender; fore femora about as long as basal width of head 
and slightly more than one-third as wide as long; fore tarsi with a stout 
tooth, the apex of which is directed forward. 
Abdomen (collapsed in the two types of this sex) probably about as 
wide as prothorax. Tube .fj.j as long as head and about 2.4 times as long 
as width at base, basal ividth about 2.do times the apical; sides nearly 
straight. Abdominal bristli's long, pointed, brown at base, those on 
segment 1) longer than tube; teninnal bristles three-fourths as long as 
tnbe. 
IMeasurements of holotype: Length 4.1 mm.; head, length .714 mm., 
width behind eyes .408 mm., behind middle .:;77'mm., at base .444 mm.; 
j)rothorax, length along median dorsal line .252 mm., width (inclusive of 
coxjc) .737 mm.; pterothorax, width .(i48 mm.; tube, length .384 mm., 
width at base. 162 mm., at apex .072 mm. Antennal .segments: 1, 108m; 
2, 111m; 3, length 108m, width 6.3m; 4, 203m; 5, 170m; 6, 135m; t’ 146m; 
total length of antenna 1.08 mm. ’ 
Male. (I late 5, fig. 3.) \ ery much like temale in color and general 
.structure, but more slender. 
Head of sametorm as in female; posterior ocelli on a line with anterior 
juargins of eyes. Prothorax abont .48 as long as head and (inclusive of 
coxae) about 2.8 times as wide as long; median dorsal line with dark 
chitinous thickening. Fore femora nearly as long as head and about half 
