304 



about the interstices, or the clypeal suture). No specimen 

 before me seems to fit the description. 



O. emarginatus, Mad. A small species from Cape York 

 (Long., 2^1.), black (the head and prothorax nitid and bronzy, 

 the elytra subopaque and indistinctly marked with reddish), the 

 clypeus feebly emarginate, the head with a frontal lamina horned 

 at the ends, the pronotura finely punctulate and slightly retuse 

 in front, the elytral interstices Hat. 



O. parallelicornis, Macl. A fairly large species (Long., 4 1.) 

 from Cape York, black, subnitid clypeus non-emarginate, head 

 with frontal lamina horned at each end, pronotum finely punc- 

 tulate, non-retuse in front and devoid of tubercles, the elytral 

 interstices wide and rugulose. 



O. incornutus, Macl., is from Queensland (Long., 2J 1.), black, 

 subnitid (pronotum of female said to be coppery, elytra spotted 

 with red), front of clypeus almost truncate, general surface very 

 finely punctulate, a feeble obtuse frontal carina in male (wanting 

 in female), elytra with wide flat interstices (no mention of 

 pronotum being retuse or tuberculate). 



O. evanidus, Har. Probably near O. Fletcheri^ Blackburn, but 

 not likely to be identical as it is not all probable that Harold 

 would have failed to mention the presence of elytral setge ; more- 

 over the frontal characters of the male do not agree in the two 

 species, Fletcheri has no coppery tone of colour, and the habitat 

 of evanidus (Tasmania) is very remote from that of Fletcheri. 



O. planicollifi, Har. A species of moderate size (Long., 4 1.) 

 from Cape York, black except the head and pronotum which are 

 coppery, the head devoid of transverse carinas, the pronotum 

 coarsely punctulate and neither retuse nor tuberculate, the elytra 

 with alternate interstices elevated and granulate - punctulate. 

 Associated by its author with O. Ringi (*? Har.), and Erichsoni 

 (? Hope). By the latter name no doubt inermis, Macl , was 

 intended, but Erichsoni is a very different insect (see my note on 

 O. Erichsoni^ Hope). The alternate convexity of the elytral 

 interstices is an unusual character among the Australian 

 Onthojjhagi. The antennae are yellow. 



O. graniim, Lansb. An extremely small species (Long., 1|- 1.) 

 from Cape York, black, nitid (except the head and pronotum 

 which are bronzy), the clypeus emarginate in front, the head 

 bicarinate, the pronotum strongly punctulate and neither retuse 

 nor tuberculate, the elytral interstices convex and unpunctured, 

 the club dark. Said to be near O. parvus, Blanch., and 

 O. incornutus, Macl, but the author does not say that he has 

 seen the type of either of those species neither does it appear 

 probable that he has done so, and therefore the statement 

 probably means no more than that Lansberge has arrived at that 



