140 Arllnir M. Lea : 



width of head, but slightly narrower than elytra (at base 

 much narrower), with two distinct curved impressions, a rather 

 short one in middle, and a longer one at base so curved as almost 

 to extend to the apex on each side ; punctures as on head and 

 elytra. Elytra subquadrate, shoulders square, sides parallel, apex 

 gently incurved to middle. Abdomen parallel-sided, sides 

 strongly margined ; punctures dense and small. Legs rather 

 shoi't. Length 1^, to apex of elytra 2-3 mm. 



I! ah. — N.S. Wales : Sydney, three specimens from a nest of 

 I ridoDn/rmex rufoiiigei- (H. W. Cox). 



The elytra are quite as black as the rest of the upper surface. 

 The impressions on the prothorax are separated by a slight 

 ridge, the basal one is somewhat interrupted, so that from some 

 directions it appears to consist of several shallow transverse or 

 slightly curved foveae. 



Of the size of exujuus, but with prothorax distinctly sculptured 

 and legs ])aler. 



Eleusis nigriventris, n.sp. (Fig. 5.) 



Castaneous, abdomen black. 



Very fiat. Head almost parallel-sided behind eyes, hind angles 

 gently rounded, with a short narrow neck, front somewhat pro- 

 duced between antennae and obtuse, with two strong median 

 impressions not quite continued to base, and a finer but con- 

 tinuous impression on eacli side ; with fairly large, clearly 

 defined punctures. Eyes small, projecting, and at one-third 

 from apex. Antennae inserted on extreme sides half-way 

 between eyes and apex, eleven-jointed, rather thin and of almost 

 uniform thickness ; first slightly stouter and about once and 

 one-fourth the length of second, second slightly longer than 

 third, and third than fourth, fourth to tenth slightly transverse, 

 eleventh obovate, almost twice the length of tenth. Prothorax 

 slightly narrower than head, moderately transverse, widest at 

 apex, thence with oblique sides to base ; punctures smaller than 

 on head, and forming two almost regular median lines, the space 

 between which is impunctate. Scutellum equihiterally trian- 

 gular, impunctate. Elytra oblong, about one-fourth longer than 

 wide, and the width of head : with denser but smaller punctures 



