434 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
rowing apically, slightly sinuate and slightly laterally compressed, 
orifice on left side at apex, an oblique row of five spines above orifice, 
an oblique row of five spines on right side near middle, an oblique 
row of eight spines on left side arising dorsally in apical quarter 
and ending ventrally at basal quarter. Diaphragm with a narrow 
V-shaped process, minutely irregularly denticulate, situated medially 
below penis. Genital styles broad, outer margin sinuately curved, 
distally convex, inner margin convex in basal half, strongly concave 
in apical half, outer margin bent mesad distally to meet inner margin 
at apex. 
Described from 25 macropterous males and 88 macropterous fe- 
males collected by the writer on Axvonopus compressus at St. Augus- 
tine, Trinidad, B. W. I. (Sept. 12, 1942). Holotype male and allo- 
type female, U.S.N.M. No. 56683. 
DELPHACODES AXONOPI, new species 
PLATE 9, FiaurEs 107-110 
Male (macropterous) : Length, 1.8 mm.; tegmen, 2.4mm. Female 
(macropterous) : Length, 2.1 mm.; tegmen, 2.9 mm. 
Vertex as broad as long, or a very little shorter, base at middle of 
eyes, base as wide as apex; frons twice as long as wide, margins very 
shghtly arcuate; antennae reaching slightly beyond base of clypeus, 
first segment longer than wide, second segment not quite twice as 
long as first. Posttibial spur three-quarters as long as basitarsus, 
thin, tectiform, with about 16 fine teeth. 
Frons and clypeus black between yellow carinae, anterior portion 
of genae, apart from a few pale spots, basal joint of antennae, mesono- 
tum, pleurites, abdominal sclerites, and genitalia fuscous, posterior 
half of genae, second joint of antennae, vertex, pronotum, and legs 
testaceous to light brown; tegmina hyaline, yellowish, veins dark 
yellow, sparsely granulate; wings vitreous, veins testaceous. _ 
Opening of pygofer slightly wider than long, rounded, margins 
entire, anal emargination large, anal angles rounded, produced and 
curved mesad; diaphragm with dorsal margin sinuate, indented 
shallowly in middle. Anal segment comparatively small, sunk deeply 
into emargination, with a pair of slender spines apically, approxi- 
mated at point of origin and directed downward. Penis subcylin- 
drical, slightly compressed laterally, rounded at apex with orifice 
on left side; a row of 14 spines on left side arising dorsally near margin 
of orifice and passing downward to near ventral margin where six 
of the spines form a horizontal ledge; a horizontal row of six or 
seven spines ventrolaterally on right side. Genital styles flat, broad 
at base, narrower distally, apex produced into two short projections, 
the inner more slender, the margin between them shallowly convex 
