A428 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
nodal line which are light; wings smoky, veins dark, tibiae at apex 
and tarsi pallid. 
Anal segment small, short, very symmetrically produced poste- 
riorly on each side into a small rounded deflexed lobe; lateral 
margins deeply sinuate, produced into a rounded lobe ventrally; 
ventral hind margin deeply excavated. Diaphragm short, without 
armature. Periandrium produced into a broad plate along right side 
with an outwardly directed point near apex; penis with apodeme 
traversing periandrium, with a curved spine directed ventrad at apex, 
and a curved membranous lobe, supported by a sclerotized rod, on left 
directed laterad. Genital styles narrow, outer margin straight, some- 
what convex near apex, inner margin slightly convex at base, concave 
near apex. Apex rounded, somewhat bent mesad. 
Described from one male taken by the writer in St. John’s Valley, 
Trinidad, B. W. I. (June 12, 1942). This species differs from minuta 
Muir in size, in the carinae of the pronotum and mesonotum, in the 
anal segment, and in the genitalia. Type, U.S.N.M. No. 56680. It 
will be noted that the length of the inner pair of mesonotal carinae 
is variable, and does not constitute a character of generic value as 
originally believed. 
4b. Calcar cultrate, thick, convex on each side or slightly concave on inner face, 
or thin and tectiform, toothed along hind margin, or without teeth. 
Subfamily DELPHACINAE 
5a. Calcar convex on each side, toothed on posterior margin. 
Tribe ALOHINI 
Genus BURNILIA Muir 
Burnilia Mum, Bull. Hawaiian Sugar Planters’ Exp. Stat., ent. ser., No. 15, p. 7, 
1924. (Genotype, Delphaz pictifrons Stal, Ent. Zeit. Stettin, vol. 25, p. 50, 
1864.) 
Head narrower than thorax; vertex 1.5 times as long as wide across 
base, base 1.5 times width at apex, sides straight, carinae forming an 
inverted Y in apical half; frons twice as long as wide at apex, apex 
2.7 times width of base, frons strongly depressed across middle; 
antennae terete, nearly reaching to apex of clypeus, length of segment 
I twice its width, IT 2.4 times length of I; clypeus in side view produced 
angularly in middle, carinate medially and laterally. Pronotum 
tricarinate, lateral carinae reaching hind margin; mesonotum tricar- 
inate, flat on disk. Hind basitarsus considerably longer than other 
two joints together ; calcar narrow, cultrate, thick, convex on both sides 
with about nine spines on hind margin. 
