OF WASHINGTON, VOLUME XII, 1910. 147 



where cubitus and median connect near tip of the wing, and the stigma 

 rather darker. Wings rather broad, hardly acute at tips ; three cross- 

 veins before radial sector in fore wings, two in hind wings, about eight 

 branches to radial sector in each wing; in fore wings the anal vein 

 runs parallel to the cubital branch for about four cells, in the hind 

 wings not for one cell ; abdomen of female as long as fore wings, of male 

 much longer and more slender, the appendages very long, longer than 

 any segment of the abdomen, not much curved. 



Expanse, .'!S to 4.~> mm. 



From Mendoza, Argentina (Jeusen-Haarup Expedition, 

 through Dr. Petersen.) 



Psammoleon punctipennis, new species . 



Head pale, a broad black band below antennae, and one above the 

 sockets ; two klack bands on vertex, the anterior band formed of three 

 spots, the middle spot longitudinal, the lateral transverse ; antenna' dark 

 brown, each joint tipped with yellowish ; pronotum dull black, a lateral 

 and a median yellow stripe, latter narrow, and both may be broken near 

 middle; thorax black, with yellowish spot on each side of the anterior 

 lobe, some on the lateral lobes, and on the scutellum a rather large api- 

 cal spot ; abdomen black, apex and middle above of basal segment pale, 

 sides of last dorsal segment pale, also tip of last ventral segment ; legs 

 pale, I and II heavily dotted with black on outer sides, and larger spot 

 at tips of femora above, III less dotted ; tarsal joints III and IV black; 

 legs slender, spurs as' long as two tarsal joints, fifth joint longer than 

 first; pronotum about as broad as long, abdomen rather short. Wings 

 hyaline; fore wings with four small black spots; one slightly before the 

 middle on hind margin, and three close together toward apex near hind 

 margin, two of them almost on the margin, also two fainter dots near 

 apex of wings; stigma with basal black dot; hind wings with one black 

 spot on hind margin toward tip, and very faintly one or two dots beyond 

 it. Venation mostly brown, the subcosta, radius, and cubitus spotted 

 pale. Wings rather long and narrow, acute at tips; twelve cross-veins 

 before radial sector in fore wings, one in hind wings, about twelve 

 branches to radial sector in fore wings, and the anal unites with cubital 

 branch just above the margin; all costal cross-veins simple. 



Expanse, 7S mm. 



From San Antonio, Colombia (Fassl). One specimen is 

 not fully colored and does not show the spots. 



Myrmeleon argentina, new species. 



Face yellow, a broad black band under and between antenna 1 , latter 

 wide apart, nearly twice the diameter of a socket; head above antenna- 

 dull black, with a yellowish spot near eye, and a submedian stripe, some- 

 times connected to the spot; antenna 1 dark, paler near tip; pronotum dark, 

 anterior corners and lower margin paler, two pale spots each side, rather 

 large; thorax dull black, posterior margin of meso- and meta-thorax nar- 



