22 PROCEEDINGS OF THE NATIONAL MUSEUM vol.83 



(6) PARADIDYMA SETIGERA (CoquUlett) 



Admontia setiyera Coquiixett, Invertebrata Pacifica, vol. 1, p. 36, 1904. 

 Phytoadmontia setigera Townsend, Proc. U. S, Nat. Mus., vol. 49, p. 626, 1916. 



Female. — Closely resembles P. obliqua, from which it differs in 

 the following characters : Front at extreme vertex 0.294 of the head 

 width in one specimen; median stripe distinctly narrower than one 

 parafrontal on entire length; outer verticals weakly developed; 

 third antennal segment three times longer than second; cheek one- 

 half the eye height. Thorax and scutellum densely gray poUinose; 

 mesonotum marked with four black stripes, which are distinct be- 

 hind suture; three sternopleural bristles. Abdomen subshining, the 

 pollen gray and without definite pattern, in certain lights extending 

 thinly to hind margin of last three segments, the first conspicuously 

 pollinose above. Fore claws and pulvilli almost normal in size. 

 Hind cross vein of wing not unusually oblique ; last section of fifth 

 vein one-third as long as preceding section; costal spine exceeding 

 the length of small cross vein. 



Length. — 5.5 mm. 



Male. — Unknown. 



Type. — Female, in the United States National Museum, from 

 California. 



Remarks. — Redescribed from one female. East Verde River. Ariz., 

 4,500 feet; without collector's label. 



Besides the type and the present specimen, kindly loaned me for 

 study by Dr. J. M. Aldrich, no additional specimens have apparently 

 been taken since the species was described 30 years ago. 



(7) PARADIDYMA OBLIQUA, new species 



Female. — Front at vertex 0.304 of the head width in one specimen 

 measured; median stripe reddish brown, about equal the width of 

 one parafrontal; ©cellars small, proclinate; verticals broken off, but 

 the scars indicating a good-sized inner pair; orbital bristles two, 

 proclinate ; frontals about five in number, extending about to middle 

 of second antennal segment, uppermost bristle reclinate, rather short; 

 parafrontals gray pollinose to vertex, almost devoid of hairs outside 

 of frontal rows ; face receding, moderately excavated, in profile con- 

 cave above mouth, its ridges normally divergent, bearing only one 

 or two bristly hairs next to vibrissae; the latter situated on oral 

 margin but well above the lovrer edge of head; parafacials gray pol- 

 linose, bare outside of the main row of bristles, which extend along 

 inner margin from lowest frontals to level with apex of third an- 

 tennal segment; cheek sparsely haired on lower margin, gray pol- 

 linose, about two-fifths the eye height; antennae a little shorter than 



