
714 THE AMERICAN NATURALIST. (VoL. XXXVI. 
46. Antenna with a 4-jointed club (Asia and Papuasia) Cryptopone Em. 
Antenna without a club, or with an indistinctly marked off 5-jointed 
club (warm and temperate regions of the whole world) * Ponera Latr. 
47. Clypeus flat, separated from the frontal carina by a scarcely percep- 
tible suture or not at all; body opaque, with fine gray pubescence 
(warm regions of the whole world) . . . . . Platythyrea Mayr 
Clypeus separated off by a distinct suture Wee DULL V S 
48. Anterior border of clypeus with two teeth . . . . . . . . 49 
Clypeus not bidentate . . eo ow Pe 
> 
Me] 
. Epinotum with two teeth ; settle - fuis (Africa) 
Streblognathus Mayr 
Epinotum unarmed ; petiole not pointed (South America) 
Dinoponera Roger 
. Clypeus in the middle with a raised piece E on either side 
frica FC — pa 
51 
ui 
o 
Clypeus arched or carinate . 
51. Cheek in front of the eye with a longitudinal taHd 2 0205454 2 ae 
Cheek without a carina. . . KM CE M, 53 
pe Crewe Genta (ARa s o... n ‘get Mayr 
Claws simple (South America) . Neoponera Emery 
53. Eye in the middle or behind ihe middle et: thé side of the head 
(Africa) , d Forel 
Eye in front of the middle of the side of the head . =. 
54. Mesoépinotal suture obsolete or not impressed; mesonotum not arth 
in profile (warm regions of the whole world) Pachycondyla F. Smith 
Mesoépinotal suture impressed ; mesonotum distinctly arched in pro- 
file . Euponera Forel 
55. Antennal kar EE with Pat iiber behind ‘the frontal carine ; 
petiole prolonged above into a thorn-like point (warm regions of the 
globe) . : . . . Odontomachus Fabricius 
Antennal iind not condideni bebini j6- 
Antennal fovea bordered by a carina jail ebd the ejes head 
not emarginate posteriorly ; petiole pointed (Ma € 
psomyrmex Emery 
Antennal fovea without a lateral keel behind - eye; head always 
emarginate posteriorly; petiole usually not pointed 
* Anochetus Mayr 
un 
P 
3d Subfamily : MyRMICINJE. 
1. Clypeus not prolonged back between the frontal carina! which are 
closely approximated to each other; antenna roce = Pseu- 
2 
domyrmii) 
rin some species of Pseudomyrma the clypeus seems to be continued back 
y between the frontal carinæ, but this AISEA is the equivalent of 
the : frontal area; it is often distinct from the clypeus. 
