TJRANOTiENIA TYPHLOSOMATA 925 



the apices of the hind tibiae another; on the hind tarsi the apical three fifths of 

 the third and all of the fourth and fifth joints silvery white; wings black scaled 

 along the costa, brown scaled on the veins, the base of the first vein with a patch 

 of silvery scales, the fifth vein with a line of silvery scales close to the base. Length, 

 2 mm. 



One specimen, Taboga Island, Panama (A. H. Jennings, collector), bred from 

 larvae from pool In a small stream. 



Tj/pe.— No. 10918, V. S. National Museum. 



In the single specimen the thorax is somewhat denuded and it is possible that 

 there may be a blue spot before the antescutellar space. 



Desceiption of Female, Male, and Laeva of Ubanot^nla. ttphlosomata: 



Female. — Proboscis moderately long, slender basally, gradually expanded to 

 tip; labellae small, conical, with a few outstanding setjE; vestiture blackish- 

 brown. Palpi very small, about twice as long as the clypeus, blackish-brown 

 scaled and with some coarse dark bristles. Ajotennffi filiform, long, the joints 

 subequal, rugose, brown, with very long pile ; hairs of whorls sparse, moderate, 

 black ; tori rather small, subspherical, with a cup-shaped apical excavation, dark 

 brown. Clypeus prominent, rounded triangular, convex, constricted at base, 

 dark brown, nude. Byes black. Occiput densely clothed with elliptical flat 

 scales, black with a blue reflection, a few upright forked black ones, cheeks and 

 a broad border along the eyes of broad white scales with a blue reflection ; setiB 

 along margins of eyes coarse, black, a pair projecting forward between eyes. 



Prothoracic lobes prominent, well separated dorsally, clothed with brown 

 scales and with a broad oblique stripe of broad bluish-white ones across the 

 middle. Mesonotum dark brown and with indistinct large blackish-brown spots 

 over roots of wings and on antescutellar space; sparsely clothed with small 

 bronzy-brown hair-like scales, at sides a short row of broadly ovate white scales 

 with bluish-silvery luster, from roots of wings halfway to anterior angles; 

 bristles coarse and long, black. Scutellum dark brown, the mid lobe prominent, 

 clothed with small blackish scales, each lobe with a few coarse black bristles. 

 Pleurae luteoiis-brown with a large dark brown median spot, an oblique narrow 

 stripe of elliptical white scales continuing that on prothoracic lobes and ex- 

 tending to base of abdomen. Postnotum elliptical, prominent, dark brown, 

 nude. 



Abdomen short, subcylindrical, dorsally depressed, broadly truncate at tip; 

 dorsal vestiture brownish-black with a metallic blue or bronzy reflection; venter 

 dull greyish-white scaled; ciliation coarse and rather abundant, pale brownish. 



Wings rather broad, hyaline ; petiole of second marginal cell over twice as 

 long as its cell, that of second posterior cell distinctly longer than its cell; 

 basal cross- vein distant nearly twice its own length from anterior cross-vein; 

 veins with small pale-brown scales, those on costa and first vein blackish with 

 a blue reflection, a few outstanding, large, broadly elliptical, very pale scales 

 on second, third, and forks of fourth veins ; a short line of broadly elliptical 

 silvery-white scales at base of fourth and continued by a longer line of similar 

 scales on fifth vein over its basal third. Halteres whitish, with black knobs. 



Legs rather long and slender; vestiture brownish-black with a blue or bronzy 

 reflection; femora whitish beneath; hind tarsi with apical two-thirds of third, 

 all of fourth and fifth joints white. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3.2 mm. ; wing 2.4 mm. 



Male. — Proboscis straight, moderately long, slender basally, distinctly en- 

 larged towards apex. Palpi very short, projecting slightly beyond clypeus. 

 Antennae plumose, rather long, the last two joints long and slender, rugose, 

 brown, with long pile, the other joints shorter, elongate, subcylindrical, brown, 

 with black rings at insertions of hair-whorls; a basal whorl of very long brown 



