C)2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5 1 



nearly straight, about two-thirds as long as axis of head at antennal 

 insertion. Occiput swollen below, behind eyes. 



Four sternopleural bristles, formula 2:1:1; hypopleural bristles 

 in a curved row, strong : pteropleural bristles several, one strong ; 

 four postsutural bristles. Scutellar bristles strongly developed ; 

 apical pair decussate, suberect, weaker than the other marginal ones, 

 a weak discal pair in front of them ; three strong marginal pairs, the 

 subapical longest and reaching nearly to middle of preanal segment 

 (male), or only to base of same (female). 



Wings a little longer than abdomen, moderately broad, with very 

 small but distinct costal spine. No veins spined, except third vein 

 with two or three bristles at base. Fourth vein bent at nearly a 

 right angle, with very slight (almost imperceptible) wrinkle at 

 bend, latter not sharp, apical crossvein well bowed in near origin, 

 hind crossvein slightly bisinuate and approximated to bend of fourth 

 vein, small crossvein half way between end of auxiliary and end of 

 first vein. Apical cell widely open, ending far before wing-tip. 

 Tegulse large, antitegulae overlapping them for one-third of their 

 length. 



Abdomen rather broadly oval, quite pointed at apex, only four 

 segments visible above, with strong marginal and short, weak discal 

 macrochsetae. Ventral plates not visible. Anal segment in both 

 sexes with a median ventral slit for protrusion of genitalia, which 

 are retracted. 



Legs not elongate, middle tibiae with three strong bristles in mid- 

 dle, hind tibiae weakly ciliate with a long bristle in middle of ciliated 

 edge ; tarsi normal ; male claws and pulvilli elongate, longer than 

 last tarsal joint; female claws about as long as last tarsal joint. 

 Type, Polio phrys sicrricola sp. nov. 



This genus is proposed for what Mr. Coquillett has identified as 

 Gcrdiopsis mexicana, represented by four male specimens from 

 Organ Mountains, New Mexico, about 5,300 feet, September 4-5 

 (Townsend), on flowers of Lippia wrightii; and two specimens, 

 male and female, from Sierra Madre of western Chihuahua, head of 

 Rio PiedrasVerdes, about 7,000 feet, July 19 (Townsend), on flowers 

 of Rhus glabra. The Sierra Madre specimens are distinct from 

 the Organ Mountains species, and probably represent two species. 

 The male from the Sierra Madre, P. sicrricola, is made the type, 

 and the Organ Mountains species is called P. orgaiicnsis. 



The genus differs from Phrissopolia chiefly in having the eyes 

 pilose. The genus Gcrdiopsis differs from Clicctogcvdia chiefly in 

 having the eyes hairy. 6. sctosa Coquillett belongs close to if not 

 in the genus Poliophrys. 



