46 



die; in front aspect not evidently concave from the one eye-mar- 

 gin to the other; mandibles 4-dentate; maxillary palpi 3-jointed, 

 the basal joint excessively short, a single elongate joint beyond 

 the geniculation. Anterior trochanters not very elongate, clav- 

 ate, thickening from close to the base, and not with a long 

 slender stalk like all the preceding genera. Otherwise the front 

 leg^s are much as in the three preceding genera, which this genus 

 resembles also in other respects. 



PachygoiiatopHs mclainas, sp. nov. 



Black, the face below the antennae, the two basal joints of 

 ti^ese (which are however darker above), all the tibiae and tarsi, 

 but especially the front pair, pale. 



Head above, very shining, with some indefinite impressions, 

 and a median distinct one extending forwards from the front 

 ocellus; the face above the antennae dull and very densely and 

 minutely sculptured. Pronotum very shining, and with indefinite 

 puncturation; propodeum shining, the surface sculpture very 

 delicate, appearing like dense minute puncturation, not trans- 

 versely rugose, nor pilose posteriorly. Abdomen smooth and 

 shining. Length 2-2.5 "^"i. 



Hab. Bundaberg and Rockhampton, Queensland; bred. 



CHALCOGONATOPUS, gen. nov. 



Apterous, head concave above, the antennae slender and elon- 

 gate, with long, thin third joint. Mandibles quadridentate; max- 

 illary palpi with six joints, labial palpi three-jointed. Pronotum 

 deeply, transversely impressed before the middle, to form a short 

 wider anterior and a narrow, long, elevated, posterior division; 

 the whole thorax in fact formed much as in Gonatopus and its 

 allies. Fourth joint of anterior tarsi very long about equal to 

 the basal one, chelar claw as in Gonatopus. Thorax laterally 

 with a very distinct groove or suture running forwards from the 

 middle coxae and marking off the propodeal and mesothoracic 

 elements. 



EUGONATOPUS subgen. nov. 



A very distinct subgenus of the above, having the joints of the 

 flagellum of the antennae less long and slender, and the propo- 

 deal and mesothoracic elements, at the sides of the thorax pos- 

 teriorly, completelv fused. 



