collected in the Lagos district by W. A. Lamborn. 519 
three times as long as vertex and about as long as scutellum, 
anterior margin slightly rounded, almost truncate, posterior margin 
almost truncate, the posterior angles slightly roundly prominent ; 
scutellum triangular, its apex acute; tegmina about twice as long 
as broad, passing the apex of abdomen, apical areas three; legs of 
moderate length, posterior tibiae long, slightly curved, strongly 
spinulose. 
Type. O. bicolor, Dist. 
Ossana bicolor, sp. n. 
Head, pronotum, and scutellum shining black; body beneath, 
legs, and tegmina ochraceous; vertex of head in some specimens 
entirely black, in others more or less suffused with ochraceous ; 
scutellum in some specimens entirely black, in others with the 
anterior margin more or less suffused with ochraceous; pronotum 
finely transversely wrinkled; scutellum distinctly transversely 
incised before apex; other structural characters as in generic 
diagnosis. 
Long. 4 mm. 
Hab. Oni, near Lagos (W. A. Lamborn—Ozxford and 
Brit. Muss.). 
See also pp. 470-1. 
Nehela ornata, sp. n. 
Black; posterior margin of pronotum, a curved transverse fascia 
near apex of scutellum, two short discal transverse lines crossing 
tegminal suture—one before and the other near middle—a spot on 
suture a little before apex, and the legs pale ochraceous; anterior 
and intermediate tarsi, posterior tibiae, and apices of posterior 
tarsi, black; head with the vertex short, as broad as the anterior 
margin of the pronotum, rounded, slightly angulate; face dilated, 
subtriangular, apex produced, laterally before eyes, sinuate; ocelli 
between eyes, about as far apart from eyes as from each other; 
pronotum very finely transversely wrinkled. 
Long. 4 mm. 
Hab. Oni, near Lagos (W. A. Lamborn—Ozford and 
Brit. Muss.). 
This species differs from the type of the genus described 
by Buchanan White from the Island of St. Helena in having 
the vertex of the head more rounded and less angulately 
produced. I have not considered that this is alone, at 
least for the present, sufficient to justify the proposition 
TRANS. ENT. SOC. LOND. 1913.—PART III. (JAN.) MM 
