223 



GG. 



FF. 



DD. Elytral interstices in front nitid and 

 finely and sparsely punctured, behind 

 opaque with close asperate punctures 

 "CO. External spine at apex of elytra very 

 long and slender (much longer than the 

 scutellum) 

 BB. Elytra unarmed at apex. 

 C. Head testaceous or brown. 

 D. Striaj and seriate punctures of elytra 

 strong (about as in Australio', AIuls.) ... 

 DD. Striae and seriate punctures of elytra fine 

 CC. Head black or metallic. 

 D. Punctures of disc of prothorax very close 



(about as in B. affinis, Brul.)... 

 DD. Punctures of disc of prothorax evidently 

 less close. 

 E. Clypeus extremely closely (almost con- 

 fluently) punctured 

 EE. Clypeus notably less closely punctured. 

 F. Lateral stride very much narrower than 

 their interstices. 

 G. Interstice on either side of the short 

 second stria bears a single row of 

 well-defined punctures ... 

 Interstice on either side of the short 

 f second stria with confused and 

 'faint puncturation ... 



Lateral stria? about same width as 

 their interstices ... 

 A A. Mesosternal carina prominent in front of 

 intermediate coxk (as in affinu, Brul.); 

 second stria of elytra reaching at least to 

 middle of length of elytra. 

 B. Punctures of prothorax very coarse (notably 



more coarse than in ajfiais, Brul.) ... queenslandicm, Blackb. 



BB. Punctures of prothorax much less coarse. 



C. Size comparatively large (about 3 1.) . . duplopunctatus, Blackb. 

 CC. Size very small (at most 2 1.) ... ... involutus, Macl. 



B. majusculus, Blackb. In Tr. Roy. Soc. S.A. 1892, p. 207, I 

 expressed a doubt as to whether this species is really distinct 

 from B. externespinosus, Fairm., and stated that I was unable to 

 specify any structural characters to separate the two. I had not 

 at the time examined a male of the latter, but having now seen a 

 male I am able to say that uiajtiscidus is a valid species as the 

 penultimate ventral segment in the male of Fairmaire's insect is 

 even, having no trace of the dentation of outline that ;s so con- 

 spicuous in B. majusciolus. 



B. AnstralicK, Muls. I think B. externespinosus, Fairm., may 

 be regarded as identical with this insect. M. Fairemaire says 

 that the Jatter is very near his species, but dififers in the terminal 

 spines of its elytra being of equal size and less widely separated • 

 I can definitely assert, however, that there is quite as much 

 variation as this expression indicates in the terminal spines 



macumhensis, Blackb. 

 munitijiennis, Blackb. 



sticticus, Fairm. 

 debilipennis, Blackb. 



Flindersi, Blackb. 



discolor, Blackb. 



stigmaticoUiSy Fairm. 



auriceps, Blackb. 

 ovipennis, Fairm. 



