366 NATHAN BANKS, 



Three specimens from Durango, Mexico [Barrett]. This is un- 

 doubtedly the most handsome Myrmeleonid yet known from North 

 America; the snow-white pterostign^a shows too much advantage on 

 the rich brown of the apical part of wings. It shares with Myrvie- 

 leon pygmxmis the honors of being the smallest Myrmeleonid. 



ERE;VI0L,E0]V gen. nov. 



Eight cross-veins before origin of radial sector, first branch of 

 radial sector arising considerably beyond end of anal vein, radial 

 sector with eight branches, between cubitus and anal but one series 

 of cells, wing broad before the pterostigma, several of the costal 

 cross-veins forked before pterostigma, in hindwings but one cross- 

 vein before origin of the radial sector. Pronotum narrow ; antennse 

 slender; legs long and slender, not lineate with black; spurs slen- 

 der, as long as first two or three ba.sal joints, the first basal joint 

 very long. 



Type Myrmeleon macer Hagen. 



By position of radial sector in fore and hindwings, this genus is 

 allied to Psammoleon, but readily separated by broad wings, slender 

 legs and narrow pronotum, as well as by minor characters. From 

 Glenurus it is readily separated by narrower hindwings, fewer 

 branches of radial sector and by unhooked spurs. 



Eremoleoii ina<'er Hagen. 



Two females from Cuernavaca, July. 



ASCALAPHID^. 



Uliila tiiberciilata n. sp. — Face black below antennse, labrum pale yel- 

 low, both clothed with white hair; above antennse dark gray or black hair; an- 

 tennse annulate at tips of joints, club brown; thorax light brown, clothed with 

 white hair below, and above with gray and black hair; legs pale, tips of femora 

 blackish, basal tarsal joints annulated with black ; abdomen black, mottled with 

 brown and some yellowish. Wings hyaline, pterostigma black, in hind wings a 

 brown cloud just below the pterostigma, venation mostly black, subcosta yellow, 

 interrupted with black. Antennse about equal to length of wings; mesothorax 

 with the anterior lobes plainly elevated in form of large rounded tubercles; 

 wings longer than in U. hyaliiia, less acute at tip, sixteen radial cross-veins. 

 Length 22 mm., wing 29 mm. 



One specimen from Iguala, in September. None of the other 

 species known to me ( U. hyal'ma, ^^-pimctata, mexicana, bicolor and 

 albifrons) have elevations on the mesothorax. 



