420 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



H. curtum and H. nigrum, Chaud., are said by de Chaudoir* to 

 be allied to H. hreve, Motsch., being placed in the genus Nurus. 

 Both are black species. 



H. subvirens, Chaud. Unknown to me in nature. From the 

 description it resembles H. alternans, SI., but has the prothorax and 

 elytra margined with green. The elytra are descriljed as in 

 vigorsi, all the interstices nearly equal ; no mention is made 

 of the humeral angle. 



H. violaceum, Casteln. I have never seen the description of 

 this species, and know nothing about it. 



H. opacijyenne, Macl. This species seems, from the description, 

 to be allied to ff. nitidicolle and H. loUsoni. Its black opaque 

 colour would in itself distinguish it from these species. 



H. carhonicolor, Motsch. The description of the prothorax as 

 with rectangular basal angles, and the elytra with flat impunc- 

 tate interstices (the 8th being carinate) seems to approximate 

 this species to Trichosternus planiusculus, White, from New 

 Zealand. These features do not occur in any Australian species 

 known to me, therefore I think H. carbonicolor will prove 

 to be an extra- Australian species. 



HOMALOSOMA IMPERIALE, n.sp. 



9- Broad, robust ; head large ; prothorax short, transverse, a 

 little narrowed behind ; elytra broadly ovate, finely punctate- 

 striate, interstices lightly costate, shoulders dentate. 



Upper surface of head and prothorax of a gilt Ijrassy colour 

 with purple reflections ; elytra subsericeous, finely shagreened, 

 purple black with a narrow shining brassy green margin ; under- 

 surface and legs piceous-black. Head large (7 "5 x 7 '75 mm.), 

 smooth, depressed between eyes ; vertex convex ; front bi-im- 

 pressed, the impressions wide, foveiform behind the clypeus ; 

 clypeal suture well marked ; clypeus longitudinally strigose ; eyes 

 convex, prominent ; orbit widely and lightly inflated below and 

 behind eyes. Prothorax short, transverse (6-5 x 10 mm.), widest 

 a little behind anterior angles, depressed, lightly declivous towards 

 * Bull. Mosc. 1878, LVIII., No. 3, pp. 37, 38. 



