OF WASHINGTON. 131 



respect like Wormaldia. Forks I, 2, 3, 4, 5 in fore wings; I, 2, 3, and 

 5 in hind wings. Fore wings with distinct costal cross-vein; discal cell 

 closed in both pairs of wings; spurs 3-4-4; tibia and metatarsi of 

 middle legs dilated in female; no ocelli. 



Type: Holocentropus placidus Banks. 



The genus also includes Polycentropus lucidus Hagen. 



Nyctiophylax Brauer. 



This genus includes Polycentropus vestitus Hagen and 

 P. affinis Banks ; and it is probable that Cyrnus pallidus Banks 

 and C. fraternus Banks also belong here ; they have the super 

 ior branch of radial sector present in hind wings, but the 

 closure of the discal cell is extremely indistinct, if always really 

 present. 



Plectrocnemia australis, n. sp. (PI. IX, fig. 17). 



Face below antennae deep black, with black hair; palpi black; head 

 above antennae with much golden hair, but a tuft of long, black hair 

 above each eye; antennae yellow, faintly annulate with pale brown; 

 thorax with a stripe of yellow hairs in the middle, and black hair on 

 each lateral lobe ; abdomen brown ; legs rather brownish yellow. Wings 

 brown, thickly spotted with yellow, median vein and anal region darker 

 brown than elsewhere, a patch of longer black hair near base of fore 

 wings, and several black marks along the costa. Hind wings grayish 

 hyaline, darker near tips on costal part. Venation like P. conspersa, 

 but fork i is not nearly as long as its pedicel ; fork 5 is wide-spread at 

 base. The legs are long and slender; on middle tibiae the submedian 

 spurs are as far from base as the longer spur of the pair; on hind 

 tibiae the submedian spurs reach scarcely more than one half way to 

 tip; and the apical spur^s are hardly one half the length of the first 

 tarsal joint. The tip of female abdomen ends in a slender upcurved 

 ovipositor, widened at tip. 



Expanse, 21 mm. 



From Jacksonville, Fla. (Mrs. Slosson). 



Psychomyia moesta, n. sp. (PI. VIII, fig. 9; PI. IX, fig. 15). 



Head and thorax black ; vertex with white hair, and some white hair 

 near the tubercled pits on mesonotum; antennae pale yellowish; palpi 

 brown, with black hair; legs pale yellowish, with large, long spurs, 

 2, 4, 4, no trace of another on front tibiae; all legs with many fine 

 yellowish hairs; abdomen brown, appendages yellowish; wings dull 

 brownish, without mark, densely black-haired, but these hairs most 

 prominent along anal field where they are nearly distinct enough to 



