MONOGRAPH OF THE NORTH AMERICAN PROCTOTROPID^. 73 



Mandibles oblouj;, truncati' at tips, with 4 to a miuute t«etb. 



Ihorax as in Pcriscmus. 



Front wings as in Perisemus, except tbat sometimes the backward- 

 directed branch of the basal nervnre is often bent backwards and 

 joins the basal iiervure near its origin, forming a small triangular 

 closed discoidal cell (= FaroHicrola Cameron). 



Abd(mien in 9 pointed ovate or long conical, in $ ojdong-oval and 

 more depressed. 



Legs stout, the femora very nuich swollen. 



Distinguished from Periscmns by having 13, not 12 jointed antenufe. 

 Parasierola Cameron is apparently only a section of this genus, having 

 the backward directed branch of the basal norvure a little more elongated 

 and forming a distinct cellule; otherwise it is identical, and is here 

 conjoined to Goniozus. 



TABLE OF SPECIES. 



FEMALKS. 



Species with aBiiiall triangular rtiacoidal cell. 



Coxa^ and femora black; anterior tibia' and all tarsi yellow... G.cellularis Say. 

 Species without a closed discoidal cell. 



Head unusually large 2 



Head normal. 

 Backward-directed branch of the basal ner^1lre as long as the first branch 

 of the basal nervnre; legs black. 

 Anterior tiltiie and all tarsi yellowish. 



Wings Rul)hyaline G. foveolatcs Ashm. 



All tibia' and tarsi yellowisli ; 9 with middle and hind tibia' dusky. 



Wings clear hyaline G. platvnot.k, sp. nov. 



Backward-directed branch of the basal nervnre only one-third the length of 

 the first branch of the basal nervnre. 

 Abdomen very long and cylindrical, pointed at tip, much longer than the 

 head and thorax united. 



Wintrs subfiiscous G. politcs, sp. nov. 



Abdomen very little longer than the thora--:, ovate. 



Legs Itrown, the tarsi jiale G. COLrMBiANCs, sp. nov. 



Abdomen not longer than the head and thorax united. 



All legs, including coxa-, yellow G. Hiuhakdii How. 



2. Legs piceous. tips of tibi;e and tarsi pale. 



Wings hyaline G. megacephalus, sp. nov. 



MALES. * 



Wings without a discoidal cellule. 



F^egs honey-yellow; wings hyaline G. Hubbardii How. 



Legs brownish or piceous, the coxse black. 

 Wings fuscous or subfuscous. 

 Anterior tibiae, trochanters and all tarsi brownish-yellow. 



G. FOVEOLATiTg Ashm. 



All tibiip and tarsi honey-yellow G. columbiancs 



Wings hyaline. 



All tibiiP and tarsi brownish-yellow G. platynot.k 



Wings with .a tliscoidal cellule. 



Legs piceous, the tibia .and tarsi pale G. ceixularis Say. 



