174 E. T. CRESSON. 



Porizon audax, n. sp. 



%. — Black, shining; face, orbits slightly interrupted at summit of eyes, 

 clypeus, mandibles except tips, scape beneath, and tegulse, lemon-yellow; an- 

 tennae approximate at base, longer than head and thorax, black or brown- 

 black; mesothorax sparsely punctured ; pleura and metathorax laterally with 

 short pale sericeous pile, the latter with well-defined elevated lines; wings 

 short, broad, fusco-hyaline, clear at tips, stigma large, black, with a pale spot at 

 base; legs honey-yellow, posterior coxae black, four anterior coxae beneath and 

 their trochanters lemon-yellow, posterior tibiae and tarsi more or less obfus- 

 cated ; abdomen dark honey-yellow, the first and basal two-thirds of second 

 segment black. Length .35 — .40 inch. 

 Four specimeas. (Belfrage ; Boll.) 



Porizon orbitalis, n. sp. 



9 . — Black, subopaque, thorax densely and rather coarsely punctured; orbits 

 broad beneath eyes and interrupted opposite ocelli, mandibles except tips, and 

 tegulae, lemon-yellow ; apical margin of clypeus and scape beneath, rufous ; 

 antennae approximate at base, longer than head and thorax, black ; metatho- 

 rax with well-defined elevated lines, sides with silvery pile; wings hyaline, 

 ^iVMOJarge, blackish, with a pale dot at base; legs ferruginous, four posterior coxae 

 black, four anterior legs yellowish in front, tips of posterior tibiae and tarsi 

 fuscous ; abdomen pale ferruginous, first and second, and a spot at base of third 

 segments, above black; ovipositor two-thirds the length of abdomen. Length 

 .40 inch. 



'^ . — Face, clypeus, most of mandibles and scape beneath, lemon-yellow; 

 posterior tibiae and tarsi darker; third abdominal segment entirely ferruginous. 

 Three specimens. (Belfrage.) 



Porizon hyalinipennis, n. sp. 



9- — Black, shining; orbits, clypeus, mandibles except tips, spot on scape 

 beneath and tegulae, pale lemon-yellow; tip of clypeus tinged with honey-yel- 

 low; antennae longer than head and thorax, black; thorax distinctly but not 

 coarsely punctured ; pleura and metathorax with fine whitish pile, the latter 

 more coarsely punctured, with well-defined elevated lines ; wings whitish hya- 

 line, nervures pale, stigma large, black, pale at base; four anterior coxae, all 

 the trochanters and base of tarsi, pale yellow, posterior coxae and tips of their 

 tibiae black, tarsal tips fuscous; abdomen robust, pale ferruginous, first and 

 second segments above black; venter lemon-yellow; ovipositor longer than 

 first abdominal segment. Length .38 inch. 



'^. — Face yellow ; four anterior legs paler; apical segment of abdomen more 

 or less marked with black above. 



Four specimens. (Belfrage.) Resembles orbitalis, but is much 

 less coarsely punctured and with clearer wings. 



Porizon stigniaterus, n. sp. 



'J, 9 • — Black ; spot on mandibles, extreme base of wings, venter of 9 ? aii<i 

 clypeus and tegulae ot %, lemon-yellow; wings hyaline, iridescent, nervures 

 and stigma blackish, the latter large and conspicuous; legs dull honey-yellow, 

 tinged with fuscous, coxae and trochanters black, base and apex of posterior 



