390 PROCEEDINGS OF THE ACADEMY OF 



its apical margin, bilobed mark on base of metathorax, line on 

 lateral anterior suture, a spot at extreme tip above, line on ante- 

 rior suture of pleura, a spot beneath wing, another low down, 

 another before each middle coxa, spot on outside of four anterior 

 coxffi, line on posterior pair behind, posterior trochanters at base, 

 line on four anterior femora above, posterior pair within, tips of 

 their tiliise, tips of all the tarsi more or less, band on middle of 

 first abdominal segment, and the remaining segments above, except 

 broad apical margins, black; wings yellow-hyaline, nervures 

 brown, stigma honey-j'ellow. Antennae longer than body, slender; 

 scutellnm convex; metathorax striated across the middle; abdo- 

 men compressed at tip. Length 5^ lines, 

 Mirador. 



Genus MESOLEPTUS, Grav. 



1. Mesoleptus calidns. 



Mesolepius calidus, Cress., Trans. Am. Ent. Soc, ii. p. 33, % . 



Cordova. 



2. Mesoleptus aztecns, n. sp. 



% . Honey-yellow; face, mouth, orbits, cheeks, brqad annulus 

 on antenna?, collar, prothorax, most of pleura, flanks of metathorax, 

 scutellum, tegulae, four anterior and most of posterior coxae, white; 

 spot on vertex, tips of mandibles, middle and apex of antennte, 

 spot behind head, sutural line beneath tegulae, sutures and 

 impressed lines of mesothorax, sides of scutellum, posterior suture 

 of pleura, slender stripe on each side of metathorax, a spot on 

 apical middle, and a line over posterior coxae, black; wings hya- 

 line, iridescent, nervures black. Slender ; metathorax longitudi- 

 nally striated, with two transverse carinas ; areolet of anterior 

 wing broad 5-angular; abdomen long, slender, subclavate; antennse 

 about as long as body. Length 4^ lines. 



Orizaba. 



3. Mesoleptus melleus. 



Mesoleptus mellem^ Cress., Trans. Am. I]nt. Soc, ii. p. 34, %. 



Cordova. 



4. Mesoleptus bardus. 



Mesolejitua btirdus, Cress., Trans. Am. Ent. Soc, ii. p. 34, %. 



Cordova. 



