2 PROCEEDINGS OF THE NATIONAL MUSEUM vol.69 



it runs to Ameniscocephalus, but it differs in many important char- 

 acters. In Mercet's table it runs to couplet 33, and is easily distin- 

 guished from the genera {C allipteroma to Dicarnosis) there set off 

 by the slender antennae and by the peculiar wings and venation. 



Genotype. — Vosleria signata, new species. 



Female. — Head very large, considerably broader than the thorax, 

 menisciform, thin frontooccipitally, the occiput only moderately 

 concave, with the neck inserted distinctly above the middle but less 

 than halfway to the vertex; as seen from above the outline is nar- 

 rowly reniform, broadly rounded in front, and about commensu- 

 rately emarginate in a broad curve at the occipital margin; as seen 

 from the side the occipital margin is straight for most of its course, 

 but curves inward at the top of the head, the curvature in front 

 much less than that of a hemisphere, being a little more abrupt 

 above than toward the mouth; as seen from in front the outline 

 of the head is circular above the lower end of the eyes, but the 

 cheeks are distinctly discontinuous with the outline of the eyes and 

 strongly convergent toward the narrow and subtruncate oral margin, 

 the mouth being relatively small. Eyes proportionately rather small, 

 protuberant below, above almost touching the occipital margin, about 

 twice as long as wide, their long axis coincident with the longitudinal 

 axis of the head, their posterior margin nearly straight, the inner 

 orbits nearly parallel but diverging through the curvature of the 

 head as they approach the occipital margin ; postocular area narrow ; 

 vertex extremely broad, or over one-half the total width of the head, 

 the occipital margin acute; ocelli minute, arranged in a very large 

 slightly obtuse-angled triangle, the posterior pair remote from the 

 eye margins and nearly as far removed from the occipital margin. 

 Cheeks as long as the width of the eyes, or about one-half the width 

 of the frons, the genal suture obsolete; face convex and without 

 scrobes, the antennae inserted rather close together just below the 

 ocular line, which passes through the dorsal part of the sockets; 

 space between the sockets not protuberant, but conforming to the 

 curvature of the face and somewhat wider below than the length of 

 the sockets. 



Antennae slightly longer than the body, slender but not filiform; 

 scape very long and cylindrical, about as long as the width of the 

 head and nearly equaling the pedicel and first three funicle joints 

 combined; pedicel relatively small yet twice as long as thick; 

 flagellum distinctly compressed but not expanded, a little the widest 

 at the middle, and clothed with numerous short bristly setae ; funicle 

 six-jointed, the joints decreasing greatly in length distad, but all 

 longer than wide, and increasing in width to the juncture of the 

 third and fourth joints, then decreasing in width ; first funicle joint 

 about four times as long as wide, the third twice as long as wide, 



