550 NBAV SPECIES OF AUSTRALIAN COLEOPTERA, 



Somewhat resembles D. Pascof-i, Macleay, but differs in its 

 narrower form, more strongly punctured prothorax, the sides of 

 which are more parallel, smaller and more coarsely punctate head, 

 impunctate suture, &c. 



D. Fossus, Newm. Hah — Forest Reefs, Sydney, N.S.W. 



D. PiCEUS, Germ. Hab. — Swan River, Bridgetown, W.A. 



D. iGNARius, Pasc. Ilah. — Forest Reefs, N.S.W. 



D. Bakewelii, Pasc. Hah. — Forest Reefs. 



D. colydioides, Pasc. Hah. — Sydney. 



D. GRANULiPENNis, Reitt. 11 ah. — Benalla, Victoria ; Tarago, 



N.S.W. 



D. Pascgei, Macl., (co-types). 



BOTHRIDERES OPACUS, n.sp. 



Opaque; blackish-piceous, elytra and legs very slightly paler. 



Head densely and shallowly punctate; clypeus with punctures 

 fully as coarse as on vertex, its suture very distinct. Prothorax 

 distinctly longer than wide, much wider at apex than base, 

 anterior angles rounded; densely and rather coarsely punctate, 

 disc depressed, a deep groove entirely separating a space about 

 thrice as long as wide and densely punctate, groove connected 

 with base by three narrow channels. Elijtra each with two deep 

 narrow strite between suture and 3rd interstice, the strife punctate 

 but the punctures scarcely visible; 3rd, 5th, 7th and 9th interstices 

 raised and somewhat keel-like, between each two feeble but dis- 

 tinct continuous ridges; interstices not visibly punctate. Pro- 

 sternum densely and rather strongly punctate; rest of under 

 surface finely and rather spai^sely punctate; apical segment of 

 abdomen with a distinct circular impression. Anterior tihice 

 finely but distinctly sen-ate externally. Length 7, width If mm. • 



Hab.—Behn River, E. Kimberley, W.A. (Mr. R. Helms). 



The numerous ridges on the elytra render this species very 

 distinct from any other known to me; it is perhaps close to puteus, 

 Newman, but that sjDecies is described as having three sutural 



