306 bulletin: museum of comparative zoology. 



more than one haK of width of wing; thorax dark brown, sutures pale; abdo- 

 men brown; legs pale, tips of tibiae and last tarsal joints dark, in front tarsi 

 the basal joint longer than apical, in hind tarsi the basal joint two and a half 

 times longer than apical joint. Wings hyaline whitish, marked with black 

 (Plate 1, fig. 7), two spots in stigma, three in discal ceU, a broad streak from 

 fork of radial sector out to tip of wing, and several veins margined with dark; 

 the anal region mostly dark, and clouds in several cells near middle of wing. 

 Veins black, stigmal vein pale, stigma ahnost angulate behind; discal cell very 

 slender, outer side a little concave; first posterior cell very narrow, shorter 

 on median vein than the areola postica. 

 Length 3 mm. 



PSOCUS INTERRUPTUS, Sp. nOV. 



Type.— M. C. Z. 10,807. Florida: Lake Worth (Mrs. A. T. 

 Slosson). * 



Dark shining brown; antennae brownish, first joint more red-brown, with 

 very short, fine hair, third joint about as long as one half the width of the wing; 

 thorax with sutures pale; legs pale, tarsi rather darker, basal joint of front 

 tarsus barely longer than the apical joint. Wings hyaline, with two large 

 dark spots which together form an interrupted fascia; one of the spots on the 

 stigma, and the other over the first posterior cell and a little inward from it; 

 a smaller spot at end of the anal vein (Plate 2, fig. 15). Stigma about its length 

 from the wing-tip, rounded behind; radial sector forks behind bend of stigma, 

 the pedicel very long; discal cell long, much narrowed below, short petiolate 

 to the radial sector, inner side strongly convex; first posterior cell on median 

 vein shorter than the second; veins pale brown; end of discal cell and fork of 

 radial sector hyaline. 



Length 3.4 mm. 



Syngonosoma reducta, sp. nov. 



Type.— M. C. Z. 10,806. Mexico: Orizaba (D. L. Crawford). 



cf . Similar to S. flagellicorne, the antennae the same except that the hair on 

 third joints is a little shorter. It differs from that species in the reduced 

 extent of yeUow on the veins, the fork of radial sector being yellow only at 

 base, and no yeUow on the forks of the median vein, and the inner side of discal 

 cell darker; the stigma is hardly darker than rest of wing, and is rounded 

 behind, and longer than in S. flagellicorne; the head is also darker; the areola 

 postica is petiolate as in that species. 



Length 7 mm. 



A female from Orosi, Costa Rica, is much larger (10 mm. long); the 

 stigma is more yellowish; the areola postica not p^iolate, but other- 

 wise agrees. 



