CONTRIBUTIONS TOWARDS A KNOWLEDGE OF THE 

 COLEOPTERA OF AUSTRALIA. 



By a. Sidney Olliff, F.E.S., 

 Assistant Zoologist, Australian Museum. 



No. VI. — New Lamellwornia and Longicornia. 



In this paper I have described a few new species which seem to 

 nie worth making known from a systematic point of view, either 

 for their individual characteristics, or for geographical reasons. 

 All of them — including the one for which I venture to propose a 

 new genus— have been submitted to my friend Mr. H. W. Bates, 

 who, with his usual kindness, has given me the benefit of his 

 great experience in deciding the position of the more puzzling forms. 



LAMELLICORNIA. 



Othnonius, gen.nov. (Macrophyllina). 



Head rather small ; clypeus broad, somewhat concave, nearly 

 semicircular in front, the margin strongly raised, the face beyond 

 the margin sloping almost perpendicularly to the labrum. Labrum 

 prominent and articulated, rather strongly triangularly emarginate 

 in front, with the front angles and sides rounded. Maxillae short, 

 robust ; the inner lobe very narrow ; the outer with three irregular 

 rather blunt teeth on the inner margin near the apex. Maxillary 

 palpi with the 1st joint very small, the 2nd and .3rd subtriangular, 

 of nearly equal size, 4th about as long as the three preceding joints 

 together, somewhat narrowed at both extremities. Labium broad, 

 slightly concave, abruptly narrowed at the point of insertion of 

 the palpi, rounded in front. Labial palpi flattened laterally, the 



