130 Psyche [March-June 
curved anteriorly near tip. Genital styles in profile fairly nar- 
row, dorsal margin convex basally, concave in middle, slightly 
convex distally, distal lateral process shallowly emarginate, 
distal and proximal protuberances of equal height; apex of 
each style curved posteriorly, lip-like. 
Pregenital plate of female twice as wide as long, subquadrate; 
anterior and posterior margins transverse, lateral margins in 
ventral view distinctly convex. 
Described from one male taken at Constanza, Dominican Re- 
public, at 3,000-4,000 ft. (August, 1938) and one female from 
Mt. Diego de Ocampo, Dominican Republic, at the same alti- 
tude (July, 1938), both collected by P. J. Darlington. This 
species is distinguished by the shape of the genitalia, and by 
the body and tegminal coloration. 
Atopocixius melanocephalus sp. nov. 
(figs. 5, 10, 37, 49, 50) 
Male. Length, 1.9 mm.; tegmen, 2.0 mm. 
Piceous; rostrum, legs, and anterior portion of discal ca- 
rinae of pronotum fuscous. 
Tegmina hyaline, fuscous or brown in corium between Sc+R 
and commissural margin, costal cell infuscate at base, traversed 
by a very oblique fuscous band in distal quarter ; first subapical 
cell mostly hyaline and a hyaline area in each apical cell from 
stigma as far as M2 a clear spot overlying the cross vein at base 
of second apical cell of M; common vein of clavus pale just 
distad of junction, and a small pale area at apex of clavus; a 
small fuscous spot at base of stigma and another at base of third 
apical cell of M. Wings hyaline. 
Anal segment of male with lateral lobes produced, broad, not 
incurved. iEdeagus almost straight, slightly tapering distally; 
periandrium with a pair of minute teeth on each side ventro- 
laterally two-thirds from base; narrowing abruptly at apex and 
produced into a pair of long recurved thin processes, each of 
which gives off a short spine dorsally towards the apex, and at 
tip is laterally compressed into a flat lobe continued dorsally in 
a short horizontal spine directed anteriorly; penis with a pair 
of narrow sclerotised arms tapering distally, each bearing on its 
inner face dorsally a series of five short teeth directed mesally 
and posteriorly. Genital styles in profile fairly narrow, dorsal 
margin slightly convex at base, strongly concave distally, dorso- 
