438 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



with three blackish vittae, the middle one narrower. Abdomen 

 rather poHshed, showing faint trace of pollen in two mediobasal flecks 

 on segments two to four. Extreme tip of anus testaceous. Venter 

 very faintly silvery. Wings subhyaHne; the outer or costal half 

 lightly smoky, bounded by fifth vein and hind and apical crossveins. 

 Tegulae watery-white. 



Holotype.—Ca,t. No. 19457, U.S.N.M. TD 4102. 



SPHALLOGLANDULUS, new genus. 



Genotype. — Sphalloglandulus unicus, new species. 



Eyes moderately tliickly hairy in male, which is the only sex here 

 described. Front on posterior half rather over two-thirds eye-width. 

 Head quadrate and equilateral in profile, but front very prominent and 

 occiput strongly bulged below, the long axis of eye set obhquely to 

 occipital and facial planes. Frontal bristles descending low, the 

 facialia ciliate to the lowest frontals. Second antennal joint elongate; , 

 the tliird joint about twice as long as second in male, acutely pointed 

 on front apical corner. Arista thickened on less than basal half, I 

 second joint hardly or shghtly longer than wide. Facial and frontal 

 lengths about equal. Oral margin rather cut-off, but the epistoma 

 distinctly projecting. Vibrissae a little removed from oral margin at 

 sides, but nearly or quite on level with middle of same. Cheeks fully 

 one-third of eye-height. Proboscis short, the part below genicula- 

 tion hardly as long as tliird antennal joint; palpi stout-filiform, some- || 

 what bent, faintly thickened apically. Tlu'ee sternopleurals and three 

 postsuturals. Scutellum with three strong laterals, but no apical pair; 

 two shorter erect curved discal pairs, the hind pair separated. First I 

 abdominal segment with a long median marginal pair and a lateral 

 one, second segment with median discal and marginal pairs and a . 

 lateral one, third segment with median discal pair and a marginal | 

 row, anal segment with discal and marginal rows. All segments 

 show discal laterals. Legs not elongate, moderately stout, claws of 

 male fully as long as last tarsal joint. Apical cell very narrowly open, 

 ending well before wingtip, cubitus well rounded ; hind crossvein sinuate, 

 a httle nearer to cubitus, nearly parallel with last course of fourth 

 vein. Costal spine long, accompanied by a second shorter one. 



SPHALLOGLANDULUS UNICUS, new species. 



Length of body, 6.5 mm. ; of wing, 5 mm. One male, Oroya, Peru, 

 over 12,000 feet. May 7, 1914, on herbage in Rio Mantaro valley 

 (Townsend). 



Black, thinly silvery-ashy on sides, fight golden pollinose on upper 

 parts. Facial plate and antennae soft blackish, with faint pale 

 golden bloom. Parafacials, parafrontals and occipito-orbits golden 

 poUinose. Occiput ashy. Frontaha nearly black. Palpi brownish- 

 black. Thorax with two broad heavy black vittae which reach scutel- 

 lum and are continued narrowly on sides of latter. Abdomen show- 



