152 



The general outlines and the antennae are fairly close to 

 those of longicollis, but the prothorax is more densely and 

 strongly punctured ; the highest part on longicollis at most 

 has a few very small punctures, but on the present species 

 they are quite dense and strong there; the elytra are also 

 much more conspicuously seriate-punctate on the present 

 species. The sub-basal transverse impression of the pronotum 

 is not deep in itself, but being traversed by deep striae (whilst 

 the adjacent parts are punctate or granulate) is rather con- 

 spicuous. At first sight the upper-surface appears to be quite 

 glabrous, and it is only on close examination and from certain 

 directions that a few small setae become visible. 



POLYPLOCOTES LONGIPES, n. Sp. 



Castaneous ; in places infuscated, elytra and abdomen 

 paler than other parts. Metasternum, extreme base of 

 abdomen, intercoxal processes of prosternum and of meta- 

 sternum, and face near antennae, with dense whitish 

 pubescence: upper-surface glabrous, except for a few indis- 

 tinct setae at the sides. 



Head with very irregular punctures; in front strongly 

 bisinuate for reception of antennae. Eyes small but promi- 

 nent. Antennae rather long, first joint thick and curved, 

 second with its base curved under apex of first, third dis- 

 tinctly longer than second or fourth, fourth-seventh rather 

 thin and subequal, eighth and ninth dilated and forming a 

 club, eighth slightly longer than sixth and seventh combined, 

 ninth slightly longer than seventh, and much shorter than 

 eighth, its tip rounded and with sensitized pubescence. Pro- 

 thorax slightly longer than wide, base and apex subequal, sides 

 lightly incurved near base; disc finely striated in middle, but 

 the striae becoming conspicuously deeper towards sides and 

 base, with a few scattered punctures; with a transverse sub- 

 basal impression, slightly deepened (but not foveate) at its 

 middle. Eh/tra conspicuously inflated and strongly convex, 

 at their widest fully twice the width of prothorax ; with a 

 series of very small but rather sharply-defined punctures, 

 about apex somewhat irregular, and mixed with minute 

 scratches. Legs long and thin ; femora shallowly grooved for 

 reception of tibiae, these finely serrated or denticulate 

 externally. Length, 3 \ mm. 



Hah. — North-western Australia : Derby, from a nest of 

 Cremastogaster, sp. (W. D. Dodd). Type (unique), I. 6711. 



In general appearance this insect more closely resembles 

 the species of Diplocotes than of Polyplocotes, but as the 

 antennae are apparently nine- jointed and, as a species, it is 

 close to pilosus, it has been referred to Polyplocotes ; it differs 



