710 THE AMERICAN NATURALIST. [Vor. XXXVI. 
§§ Sting rudimentary (except Aneuretus) ; abdominal pedicel consisting 
of a single segment; no constriction between the second and third 
segments of the abdomen; the poison glands are often rudimental 
and there are anal este which secrete an aromatic product of 
characteristic odor (Tapinoma-odor). Nymphs without a cocoon 
4th subfamily, DoLICHODERIN 
II. Cloacal orifice round, terminal, surrounded by a fringe of hairs; sting 
transformed into a sustentacular apparatus for the orifice of the 
poison vesicle, whic as a peculiar structure — called by Forel 
“pulviniferous vesicle” (vessie à coussinet). Abdominal pedicel 
consisting of a single segment; no constriction between the second 
and third segments. Nymphs rarely naked, most frequently enclosed 
in a cocoon. Male genitalia not retractile 
5th subfamily, CAMPONOTINE 
Ist and 2d Subfamilies: DORYLINE and PONERINE. 
1. Eyes large, three ocelli, mandibles slender, denticulate; postpetiole 
campanulate, narrower than the succeeding segment (Australian) 
T Fab. 
Of a different conformation . 
Antenne 6-jointed ; first joint of hind tarsi dilated (Aficun) 
Melissotarsus Emery 
Antenne with more than six joints; tarsi simple . 
Postpetiole hardly wider than the petiole, and much narrower RE the 
anterior border of the following segment, and on this account 
appearing as the second segment of the abdomen so g 
Postpetiole of a different conformation . . . . . . . . . . 6 
Antenne 12-jointed Seren: VUE TUI ENTIS ae mas 
Antennz 9-10-jointe 
Hind legs without spurs, [onis not A E (Asia “Abics. Aus- 
tralia) nictus Shuckard 
Hind legs with spurs ; fast arapal at sonicated e as a club (Asia, 
Australia) . DOM ; . Cerapachys F. Smith 
(Ciba Oöceræa and Cysias) 
6. Postpetiole shorter than the following segment and somewhat narrower, 
but not distinctly separated from the latter; mesoëpinotal suture 
obsolete, promesonotal suture distinct ; pygidium 3- ipM antenna 
7-12-jointed ; no eyes (Asia, Africa) . P Dorylus Fabr. 
Postpetiole as in the preceding; incscépinonl kare distinct, pro- 
mesonotal suture obsolete ; antennæ 12-jointed (neotropical) 
Cheliomyrmex gu 
" 
ud 
- 
ui 
. 
Of a different conformation . 
7. The frontal carinz, which are fused with eb athek d with ihe pdt 
form a plate projecting out over the mandibles; the antennz are 
inserted close to the anterior margin of this structure . 8 

