[March 
44 
Psyche 
j I'Omm 
Figures 7-10: Pristomyrmex quadridentatus Andre. — lectotype worker: 
fig. 7, head and pronotal outline in frontal view ; fig. 8, mesosoma, petiole 
and postpetiole in lateral view. Female (self-colored form) : fig. 9, head, 
frontal view; fig. 10, mesosoma, petiole and postpetiole, lateral view. 
Color almost even rich light-golden sienna-brown, mesosoma a 
shade darker, masticatory border of mandible, and segments 2-8 of 
antennal funiculus darkly infuscated, less dark infuscation on scapes 
and the various carinae and spines of head and mesosoma. Eyes dark 
brown, almost black. 
Additional material examined , distribution. Additional distri- 
butional records fall into two geographical clusters (Fig. 15) which 
coincide with the distribution of two morphological forms, apparently 
representing geographical variants of a single species. These variants 
are discussed in detail below and illustrated in plate 3 ; essentially there 
is a southern, self-colored golden-brown form (to which the lectotype 
and paralectotype belong), and a more northern bicolored form with 
dark blackish-brown mesosoma, petiole and postpetiole (equivalent 
to Forel's suppressed variety queenslandensis ) . They are distributed 
as follows: 
