257 



Var. ater, n. var. Seven specimens (from Hawker) differ 

 in having the entire upper-surface deep black, with the under- 

 surface and appendages dark reddish-brown, becoming black 

 in parts. The clypeus in all of them is rather conspicuously 

 bilobed. They were sent with many other specimens having 

 the head pale and the general colour not deep black. 



Antitrogus burmeisteri, Blackb. 



The table differentiating the three known species of 

 Antitrogus given by Blackburn (ante, 1911, p. 199) readily 

 permits of the specimens before me being divided into three 

 aggregates, but he appears to have been in doubt as to 

 whether the colours may not have been of more than indi- 

 vidual importance. A long series of males (including a co- 

 type and many specimens taken by Mr. Griffith, some of 

 which were commented upon) indicate that the general colour 

 varies from a rather dark reddish-brown to almost black. 

 The size varies from 21 to 24 mm. The female is rather larger 

 and stouter than the male, and the club is much smaller, 

 but the proportions between the third and fourth joints of 

 the antennae are the same; the spurs to the hind tibiae are 

 somewhat stouter, but are otherwise scarcely different. 



Antitrogus tasmanicus, Burm. 



This species varies in size from 19 to 23 mm., and in 

 colour from a reddish-brown to piceous-brown, with or with- 

 out a pruinose gloss; occasionally the elytra are paler than 

 the rest of the upper-surface. The female differs from the 

 male as does the female of burmeisteri, but the proportions 

 of the third and fourth joints of the antennae are as in its 

 own male. 



Semanopterus. 



By various authors nineteen ( 6 ) names have been referred 

 to this genus, and in dealing with these ( 7 > Mr. Gilbert J. 

 Arrow transfers one (dentatus, Blackb.) to Eophileurus, and 

 regards all the others, largely by "a study of the genitalia 

 of the males" (these, however, not being otherwise noted) 

 as belonging to but five species. I differ from him, however, 

 as regards two ( meridianus and tricostatus ) of the names, and 

 consider that but four species can be maintained. 



There are in the South Australian Museum, from the 

 Blackburn collection, specimens of all his supposed species, 



(6) Really twenty, as Mr. Blackburn (ante, 1896, p. 250) refers 

 to "my S. punctiventris," evidently an MS. name subsequently 

 altered. 



(7) Ann. and Mag. Nat. Hist., Ser. 8, vol. xiv., 1914, p. 267.. 

 J 



