94 William Morton Wheeler. 



4-jointed, maxillary palpi long, evidently 6-jointed, but the terminal 

 joints are lacking. Antennae robust; scapes reaching to the posterior 

 corners of the head; first funicular joint twice as long as broad, 

 second joint l^/g times, and the remaining joints, except the last, 

 scarcely longer than broad. Thorax long and slender, narrower than 

 the head, broadest through the pronotum, which is fully as long as 

 broad. Mesonotum not convex, somewhat shorter than the pronotum, 

 longer than broad, a little narrower behind than in front and on the 

 sides not separated by sutures from the episterna. Mesoepinotal con- 



Fig. 45. Iridomyrmex oblongiceps sp. nov. Worker. B 5385. 



striction short and distinct, not deep, nor with the metathoracic spiracles 

 approximated in its dorsal concavity. Epinotum long, flattened and 

 laterally compressed, its base scarcely convex, longer than the decli- 

 vity. The latter is sloping and has an inverted V-shaped concavity, 

 the arms of which extend over onto the episternal angles and there 

 run forward to a tapering point on each side. Petiole small, not 

 higher than long, its node inclined forward, pointed above, with a 

 rather sharp border and flat posterior surface. Gaster large, its base 

 overhanging the petiole. Legs long and stout, the femora, especially, 

 being unusually robust. 



Shining; the whole body, including the scapes and legs beautifully 

 shagreen ed, the head and thorax reticulately, the gaster transversely. 



