224 Arthur M. Lea : 



elongate-cordate, rather more than twice as long as wide ; 

 strongly striated, the striae with punctures of moderate size ; 

 interstices strongly convex, and with small and fairly numerous 

 punctures ; epipleurae smooth, and almost impunctate. Ahdo- 

 nicN finely wrinkled, second and third segments each with 

 a row of small punctures at the base. Legs long and thin. 

 Length 5 — 6 mm. 



^o6. — Queensland : Cape York, in a nest of white ants (H. 

 Elgner) ; N. Territory, Port Darwin (N. Davies). 



The larger or the two Queensland specimens before me has the 

 elyti'a of a beautiful dark blue colour, from some directions appear- 

 ing almost purple, but the head and prothorax are more green than 

 l)Iue : as on the smaller specimen ; the latter has the elytra 

 much rhe colour of the prothorax, but from certain directions 

 they appear purplish-blue. Each elytron has a short, oblique 

 subsutural stria, extending for about thrice the length of 

 the scutellum. The elytral interstices are much more convex 

 than in any other small species known to me. The outlines, 

 but scarcely anything else, are much as in indigaceus. 



Mr. Elgner in forwarding the specimens to me wrote : " In 

 one nest about twelve feet high, when down about half, I 

 noticed these little beetles coming out of the passages of the 

 nest." They probably live with the white ants simply as a 

 matter of convenieuLe. All the fairly numerous specimens of 

 A. riinosus, that I found some years ago, were seen in tunnels 

 in citrus trees made by the fine longicoi'n Uracaiithus crypto- 

 'phdgus. 



CiSTEUDAE. 



lophnii mgrmecopJiilus, Champ. 



Recorded by Champion as occurring in the nests of Ecta- 

 iomma reticulatuni under stones. 



Lagriidae. 



Lagria formicicola. Lea. 



Occurs in nests of Mijrnieria forficata and of a smaller sting- 

 less species. 1 



1 Unfortunately no specimen of the smaller species was kept, Imt it was about the 

 size of I'oli/rachis hexacantha. 



