151 



then narrowed to apex; at base with about sixteen deep and 

 conspicuous foveae, bounded by acute carinae at the sides, 

 but open posteriorly, the carinae near the suture scarcely 

 continued beyond the fovea, but towards the sides continued 

 for some distance; disc almost impunctate and with feeble 

 traces of striation. Femora stout, grooved for reception of 

 tibiae. Length, 3 -3 J mm. 



Hab. — Western Australia: Beverley, two specimens from 

 nests of ants (F. du Boulay). Type, I. 6725. 



Structurally very different to any previously-described 

 species of the genus. The perforation (fig. 8 a) through the 

 head is quite conspicuous from each side, but it is necessary 

 to have the antennae out of the way; the complete absence 

 of a prothoracic fovea or sub-basal impression is unusual. 

 From one direction the seventh joint of antennae appears to 

 be slightly narrower than the sixth, but from another it is 

 seen to be decidedly wider, the eighth from some directions 

 appears to be the narrowest, and the appearance of the ninth 

 alters with almost every point of view. 



POLYPLOCOTES SCABRICOLLIS, n. Sp. 



Black; elytra, abdomen, and parts of legs more or less 

 castaneous-brown. Intercoxal processes of under-surface and 

 part of face with dense, whitish pubescence ; prothorax and 

 elytra with a few very short, upright setae. 



Head with dense punctures partially concealed by cloth- 

 ing. Antennae thick, first joint stout and curved, second 

 with its base curved under apex of first, third about as long 

 as wide, fourth-seventh from one direction apparently 

 moniliform, but really produced to one side, eighth and 

 ninth somewhat flattened, wider, and paler than the others, 

 eighth large with sides rounded, ninth short, its tip truncated 

 and slightly hollow. Prothorax slightly longer than wide, 

 sides uneven near base, and slightly wider at base than at 

 apex; densely granulate or granulate-punctate; near base 

 with a transverse impression traversed by deep striae, each 

 side with a fovea, but these invisible from above. Elytra 

 subelliptic-ovate, greatest width scarcely one-fourth more 

 than that of prothorax, base narrowly upraised and with a 

 row of small deep foveae; with regular rows of rather small 

 but sharply-defined punctures. Abdomen with dense, sub- 

 asperate punctures. Legs rather short and stout. Length, 

 2£ mm. 



Hab. — Northern Territory: Stapleton, taken from an 

 ant's nest in January (G. F. Hill). Type, in Department of 

 Agriculture, Darwin. 



