632 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



NEOPSALIDA, new^ genus. 



Genotype. — Leucostoma neomexicana Townsend, Can. Ent., vol. 24, 

 1892, p. 169. 



May bo distinguished from Leucostoma and allies by the following 

 characters : Proboscis no longer than head height, not slender. Male 

 with weak recluiate ocellar bristles, these of about equal strength 

 with the frontals and vibrissae, all rather hairlike; no verticals in 

 male. Epistoma produced downward instead of forward. Lower 

 border of head distinctly less than frontal length. Vibrissae inserted 

 well above oral margin. Cheeks of male much broader than in 

 Sijyhopsalida, being about one-fifth eye height or somewhat more. 

 Face of male over one-half width of head. Third antennal joint no 

 longer than the second. Abdomen clothed with long erect or sub- 

 erect bristly hairs, from which the true macrochaetae are not always 

 easily distinguished; last three segments with marginal row of bris- 

 tles. No costal spine. Petiole of apical cell conspicuously shorter 

 than hind cross- vein. Tegulae in the male normally of enormous 

 size, nearly as wide as wings. 



PARAPSALIDA, new genus. 



Genotype, — Phyto nigricornis Townsend, Can. Ent., vol. 24, 1892, 

 p. 170." 



Form stout; thorax and abdomen heavily built, latter in male as 

 deep as wide. Femora of male much thickened, even tibiae usually 

 considerably thickened. Claws of male very long. First abdominal 

 segment with four median marginal macrochaetae and some lateral 

 marginals, but no complete row; segments two to four of male with 

 complete row. Abdomen of male thickly short-hairy, the macro- 

 chaetae all very strong and conspicuously differentiated from the 

 hairs. Venter longer-hairy, femora hairy. Front of male in middle 

 one-tliird head-width. Epistoma produced downward. Frontalia 

 wide, occupying fully one-third of male frontal width and often 

 more. Vibrissae above oral margin. Proboscis short. Petiole of 

 apical cell almost as long as hind crossvein. Macrochaetae of head 

 strong in male, the rechnate ocellars strong as well as the frontals 

 and vibrissae. Two verticals in male, the outer ones longer than 

 the occipito-orbital fringe. Lower border of head nearly equal to 

 frontal length. Male cheeks nearly one-third eye-height. Antennae 

 well separated, the second and third joints equal in length. Male 

 wings narrow and elongate ; costal spine developed. Tegulae of male 

 of ordinary size. 



