89 
An Interesting New Derbid Genus (Homoptera). 
BY F. MUIR. 
(Presented at the meeting of November 3, 1921.) 
Anomaladerbe gen. nov. 
Tegmina large, broad, surface undulating. Media forking from radius 
after the basal median sector (M4). Media with three sectors of four, 
if the small vein at apex be counted. Clayus not distinctly open, but 
claval vein extending some distance beyond and in intimate connection 
with cubitus. The second branch of ecubitus (Cula) bent and touching 
Cul for a short distance; Cul also bent and nearly touching M4, which 
in turn is bent towards M3. The apices of Se and R thickened consider- 
ably. Hind wing half the length of tegmen, anal area well developed 
with distinct anal veins, margin of anal area corrugated to form stridu- 
lating organ. Head produced dorsally, in lateral view conical, flattened 
laterally. Vertex nearly upright, pointed at apex, excavate; face linear, 
lateral carinae meeting together from base to near apex; clypeus with 
two short lateral carinae at base, no median carina; eyes subreniform; 
antennae large, slightly longer than face, flat, thin with a slightly thick- 
ened margin; no subantennal process. Pronotum very short, upright in 
middle fitting into base of vertex, no shoulder keels. Mesonotum rounded, 
wider than long, lateral carinae very faint, but each carina produced in 
middle into a rounded knob. 
This genus holds an anomalous position. By the length of 
the wing it approaches the Zoraidinae, but the presence of a 
well developed anal area and anal veins prevents it from being 
piaced in the subfamily. In this respect it is like Symidia 
Muir. The clavus is not distinctly open, and so it should be 
placed in the Cenchreini, but the bending of the cubitus and 
M4, and the formation of false cross-veins parallel to the mar- 
gin places it in the Otiocerini. In that tribe it comes next to 
Platocera, but is distinguished from it by the short wings, 
enlarged apices of subcosta and radius, the greatly elongated 
head, the two small knobs on the mesonotum and the incom- 
Anomaladerbe pembertoni sp. n. Figures 1, 2, 3. 
Female. Length, 2.8 mm.; tegmen, 7 mm. Pregenital plate broader 
than long, hind margin broadly angularly produced from the sides to the 
middle, the apex of production curved slightly dorsad. Anal segment 
broader than long, apex broader than base, truneately sinuate. Yel- 
lowish; legs lighter; antennae, head and base of mesothorax tinged with 
red; basal abdominal tergites red. Tegmina and wings slightly opaque, 
veins yellow, basally tinged with red; a slight infuseation along the veins 
in apical half of tegmina. 
Proce. Haw. Ent. Soe., V, No. 1, October, 1922. 
