148 PROCEEDINGS OF THE ACADEMY OF 



stout, subacute ; uietathoracic spines long, subacute and slightly 

 recurved ; abdomen very slender at base, the first segment with 

 a prominent tubercle before apex ; areolet quadrate, closed. 

 Length 5^ lines. 

 Orizaba. 



13. Polycyrtus univittatus, n. sp. 



% 9 . Head, antenna, pro- and raesothorax, anterior margin of 

 pleura, spot beneath wings, scutellar region and dilated stripe down 

 middle of raetathorax, black; face, mouth, orbits, broad annulus 

 on antennoe, collar, line on each side before tegulre, tegula?, spot 

 above, another beneath, scutellum, and two oblique lines in front, 

 white; wings pale fusco-hj-aline, nervures brown; remainder of 

 nietathorax, legs, and abdomen pale honey-yellow. Slender, smooth 

 and shining; frontal spine very short and acute ; middle of nieta- 

 thorax rugulose, and in place of the usual spines there is a promi- 

 nent transverse carina; legs and abdomen slender, especialh' of 

 % ; areolet minute, closed. Length 4-4|^ lines. 



Orizaba; Cordova. (Sumichrast, No. 97.) Common. 



14. Polycyrtus pallidus, n. sp. 



%. Pale honey-3'ellow ; head, antennre, pro- and mesothorax, 

 black; face, mouth, orbits, frontal spine, very broad annulus on 

 antennre occupying nearly the apical half, collar, teguhe, line on 

 each side before, spots on scutellum and two oblique lines in front, 

 white; wings hyaline, nervures pale; metathoracic tubercles, tarsi, 

 and apex of abdominal segments, whitish. Slender, smooth and 

 shining; frontal spine robust, obtuse; metathorax with two blunt 

 tubercles; areolet quadrate, closed; abdomen and legs long and 

 slender. Length 4| lines. 



Cordova. 



15. Polycyrtus atriceps, n. sp. 



9. Bright red, legs paler ; head and antennoe black; clypeus 

 and. broad annulus on antennre white ; posterior tibire yellow, their 

 tarsi whitish; wings h^yaline; basal margin of tliird and following 

 segments blackisli. Slender, smooth and shining ; frontal and 

 metathoracic spines robust and obtuse ; areolet closed. Length 

 4 lines. 



Orizaba. 



