102 GEKKKA OF HYMKXOrTERA. 



plete subnuirginal and one small discoidal cells; maxillary paljji 4- 

 jointed, labial iialjii M-Joiiited Ktoiiaiiiiiia Wcstw. 



Males. 



Anterior wings without a stijima. with one long narrow subniarsinal cell, the 

 marginal cell also unusually narrow, no complete tliscoidal cell; an- 

 tcnnie 13-jointcd ; head small, eyes and ocelli prominent; thorax with 

 short dense pubescence, mesothorax witli well impressed longitudinal 



lines Atta Fabr. 



Anterior wings with a distinct stigma 2. 



2.— Antennsp lO-jointed, second joint of funicle as long or longer than the two 

 following joints united ; mesotborax above with two convergent grooves, 

 which areconlluent towards the middle and then continued in a straight 

 line to scutellum : oni; complete submarginal and one discoidal cells; 

 mandibles Hat, triangular, toothed on apical margin. 



Tetraiiioriiiiii Muyr. 



AntennfE with more than 10 joints 3. 



3.— Petiole attached to upper basal surface of alxbimeu, which is cordiform, 

 more convex beneath than ab()V(! and acuminate iiehiud ; antennie 11- 

 12-jointed, scape very short, only a little longer than first joint of funi- 

 cle, wbich is spherical ; mesotborax without distinctly impressed con- 

 verging lines; metat borax unarmed Creiiiastogaster Lund. 



Petiole attached to the basal middle of the abdomen 4. 



4. — First submarginal cell partially divided medially by a longitudinal nervure, 

 discoidal cell present; antennaj 13-jointed ; mesotborax with two con- 

 vergent grooves; tibial spurs pectinate Myriiiioa Lair. 



First submarginal cell not divided »■ 



5. — Anterior wings with one complete discoidal cell 6. 



Anterior wings without discoidal cell, one comi)lete submarginal cell 7. 



t). — Two (!onii)Ute submarginal cells (except perhaps in Pogonomyrmex). 



Second sulnnarginal and discoidal cells contiguous; antenna' 13-jointed, 

 first joint of funicle short, about one-third the length of second, 

 which is much longer than third. 

 Eyes large, oblong, head elongate, considerably extended behind the 

 eyes; discoidal cell much larger than the second submarginal ; abdo- 

 men elongate; body slender, glabrous PseiKloiiiyriiist Gu6r. 



Eyes round, prominent, head subtransverse, not much extended behind 

 the eyes; discoidal cell not larger than second submarginal cell; ab- 

 domen subglobose, shining; body pilose.. l*<»|U<ni<>iii.>riii«'.^ Mayr. 

 Second submarginal and discoidal cells remote, marginal cell open at ajiex ; 

 antenna; 13-jointed. 

 Fir.st joint of funicle spherical, the others cylindrical : apex of second 



submarginal cell not api>endiculate I'lioidolo W'cstw. 



First joint of funicle cylindrical like the others; apex of second sub- 

 nuirginal cell ap|>cudiculalc A|»ll»MI<»i;a>itOI' Mayr. 



One com])lete subniargiiuil cell. 

 Marginal cell elongate. 



Antcuiuu 12jointed, first joint of funicle glol)ose, scape siiort, ovate; 

 marginal cell oi)en at apex ; mesotborax without converging im- 

 pressed lines Soleiiopsis Westw. 



