216 Arthur ill. Lea: 



near base, each side of scutellar region with a feebly elevated space,. 

 Avitliin the depression, the hinder margin of each with a few small 

 granules ; about each shoulder with two conspicuous processes, the 

 outer one thin and strongly elevated, the inner in the form of a 

 stout, obtuse tubercle, the two separated by a conspicuous groove; 

 immediately behind the two subhumeral processes are two others of 

 somewhat similar form, but with their apices pointed forwards 

 instead of backwards; hind margins obliquely reflexed ; a few seti- 

 ferous granules on each side of suture near middle, and on the 

 inner basal tubercles; punctures small and mostly inconspicuous. 

 Pygidium and propygidium large and separately convex. Under 

 surface, except four apical segments of abdomen (which are highly 

 polished), subo23aque. Intercoxal process of presternum narrow 

 and with a narrow carina on each side. Metasternum with a nar- 

 row median line. Legs not very long; all the tibiae with rather 

 wide flanges, ending somewhat abruptly near their bases. Length 

 4^ mm. 



Hah. — Queensland; Dawson River, from a nest of Iridomyrmex 

 detectus (E. D. Barnard). 



Nearer to formicicola than to any other described species, but 

 considerably larger, elytral processes larger and of different shape, 

 with distinct granules, etc. 



On the type the antennae are almost entirely withdrawn into 

 their receptacles, so that only the basal joint and a small portion 

 of the club are visible; the club, however, appears to be cylindrical 

 and curved. The margins of the prothorax are so strongly elevated 

 that the disc appears conspicuously concave, its greatest depth 

 being at the front angles; the margin is somewhat interrupted in 

 the middle of the apex. The subopaque parts of the under surface 

 are rendered so by dense minute punctures, and exceedingly minute 

 pubescence. 



C'/iIninydnp.s/s ngilii^, n.sp. (Plate XXII., Fig. 7.) 



Reddish-castaneous, under surface (except prosternum), sides and 

 apex of elytra blackish. A few short pale setae scattered about, but 

 a conspicuous fi-inge of very short setae on the inner margin of 

 each epaulette. 



Head almost vertical, with distinct net-like punctures. Antennae 

 with basal joint large, flat and curved, its outer face with punc- 

 tures as on head ; club subovate, and rather large. Prothorax al- 

 most twice as wide as the median length, disc regularly and gently 

 elevated, front margins elevated, and in the form of four oblique 



