2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61 



and a broadly obtuse, tapering apex. Palpi; first segment short, 

 irregular, second with a length about 2^ times its diameter, the 

 third as long as the second, more slender, the fourth a little longer 

 than the third; mesonotum dark reddish brown; scutellum and 

 postscutellum fuscous yellowish; abdomen probably yellowish 

 brown; wings hyaline, the third vein uniting with the margin at 

 the apex, the fifth joining the posterior margin at the distal fourth, 

 its branch at the basal third; halteres pale yellowish; coxae and 

 legs pale straw; the claws bent at nearly riglit angles, minutely 

 unidentate; pul villi rudimentary. Genitalia; basal clasp segment 

 short, stout; terminal clasp segment short, stout, somewhat curved, 

 and apically distinctly chitinized; dorsal plate rather long, broad, 

 broadly and triangularly emarginate, the lobes broadly triangular 

 and sparsely setose apically; ventral plate long, rather broad, 

 broadly, deeply and roundly emarginate, the lobes rather broad, 

 broadly rounded apically and sparsely setose; style rather short, 

 broad, broadly rounded apically. 



Female. — Length 1.5 mm. Antennae about three-fourths the 

 length of the body, sparsely haired, yellowish brown, 14 segments, 

 the fifth with a stem about one-fifth the length of the cylindrical 

 basal enlargement, which latter has a length about 2^ times its 

 diameter; terminal segment somewhat produced, cylindrical, with 

 a length about 3 times its diameter and apically a short obtuse 

 process. Mesonotum dark reddish brown ; scutellum and postscutel- 

 limi fuscous yellowish; abdomen dark reddish brown; ovipositor 

 short; the terminal lobes suborbicular and apically with a rather 

 thick group of stout setae; coxae and femora mostly pale straw; 

 tibiae and tarsi darker; otherwise nearly as in the male. 



Type. — Male, Cat. No. 25211, United States National Museum. 

 Four slides with type and paratypes. One slide paratypes in New 

 York State Museum (Cecid. A3177). 



The five slides containing the material described above were 

 received from the United States National Museum in February, 

 1921, and were labeled Parasites on White Fly, Aleurycus chagen- 

 tios, Panama City, I, Molina, Res., G. 686, December 2, 1919. 



