116 Journal New York Entomological Society. [Voi.xviii. 



half the length of metatarsus ; legs strongly spined. Wings fuscous, rather 

 paler in some of the cells, marginal cell not very long, acute at tip, second 

 submarginal longer than broad, receiving the first recurrent at tip ; third sub- 

 marginal almost triangular, nearly as long as second, receiving the second 

 recurrent a little before middle, this vein curved outward, and arising beyond 

 middle of anal cell ; in hind wings the basal veins are interstitial, as in the 

 fore wings. Length, 17 mm. 



From Palmerlee, Arizona, May (Biederman). 



Psammochares biedermani, new species. 



Male. — Black, with sericeous pubescence, almost all over, except on the 

 tibiae and tarsi, very dense on the metathorax ; last segment of abdomen white 

 above, the genitalia jet black on tip. Clypeus rounded in front, a line from 

 the antennae to ocelli ; anterior ocellus nearly twice its diameter from the 

 laterals ; antennae moderately slender ; vertex slightly rounded ; anterior orbits 

 but little concave ; pronotum short, posterior margin angulate, constricted ; 

 metathorax short, evenly rounded ; abdomen elongate, fusiform. Legs slender, 

 first pair small, coxae I not reaching more than two thirds way to coxae II, 

 mesosternum emarginate in middle behind ; femur I slender ; all tibiae with 

 very short spines ; longer spur on hind tibiae but little more than one half 

 the length of metatarsus; all tarsi very long; last joint of hind tarsi without 

 spines beneath. Wings hyaline, apex fumose ; basal veins interstitial, marginal 

 cell long, acute, second submarginal longer than broad, receiving the_ first 

 recurrent much before the tip ; third submarginal shorter than the second, 

 narrowed above, second recurrent arising much beyond middle of the anal 

 cell, running nearly straight up to the middle of the third submarginal ; 

 stigma black ; basal veins of hind wings almost interstitial. Length, 8 mm. 



From Palmerlee, Arizona, July (Biederman). 



Psammochares birkmanni, new species. 



Male. — Black, with silvery pubescence. Clypeus rounded in front, vertex 

 slightly convex, a faint line from ocelli to antennae, antennae thick and stout, 

 not reaching to end of thorax, few hairs on head and thorax, except fine 

 pubescence ; pronotum silvery, with a median line, posterior border arcuate, 

 pleura and coxae silvery ; metathorax sloping, broad, silvery ; abdomen short, 

 silvery pubescence on apex of segments and on the sides ; legs slender, 

 almost devoid of spines, or only very small ones on tibiae ; longer spur of hind 

 tibia nearly as long as metatarsus. Wings hyaline, tip slightly infuscated ; 

 marginal cell acute ; second submarginal a little narrowed above, receiving 

 the first recurrent vein before tip ; third submarginal a little larger than second, 

 slightly narrowed above ; the second recurrent vein arising beyond the middle 

 of anal cell, bending a little outward at middle, and meeting the third sub- 

 marginal beyond middle ; the veins extend out to the apical margin of wing.. 

 Length, 5 mm. 



