BY G. H. HARDV. 291 



. The generic position of the species is undoubtedly nearer to the genera Saro- 

 pogon and apparently it is not identical with S. sergius Walker. 



Genus Neodioctria Ricardo. 



Type, N. australis Ricardo. New South Wales. 



Characters. — The antennae have the fourth joint present. The anterior 

 tibiae are without a spur. The wings have the fourth posterior cell open. 



Genus Stexopogon Loew. 



Type, Asilus sabatulun Fabricius. Europe. 



Characters. — The antennae have the fourth joint present. The anterior 

 tibiae are without a spur. The wings have the fourth posterior cell open. 



Note. — The above characters conform to those given under the genus Neo- 

 dioctria, but both the genera have their own very characteristic appearance. 

 Moreover, the Australian species of this genus differ from all the others in hav- 

 ing globular male genitalia. 



Genus Cryptopogox White. 



Type, C. vernaculus White. New South Wales. 



Characters. — The antennae have the fourth joint present. The anterior 

 tibiae are without a spur. The wings have the fourth posterior cell open. There 

 is an extra cross vein situated between the upper branch of the cubital fork and 

 the radial vein ; the presence of this vein separates this genus from all the others. 



Genus N e o s a r o p o G o x Ricardo. 



Type, BasypogoH priiiceps Macquart. New South Wales. 



Characters. — The antennae are without the fourth joint. The anterior tibiae 

 contain an apical spur. Tlie wings have the fourth posterior cell open. 



Note. — The genus differs from Brachyrrhopala by the abdomen not being 

 club-form; and from Neoeyrtopogon by the face not being very convex. 



Genus N E c T R T P G O X Ricardo. ( Text-fig. 7. ) 



Type, N. bifasciatiis Ricardo. Queensland. 



Characters. — The antennae are without the fourth joint. The anterior tibiae 

 contain an apical spur. The wings have the fourth posterior cell open. 



Notes. — The very convex face is the only character published that distin- 

 guishes this species from its allies. 



In the Macleay Museum there is a species belonging to this genus that has 

 a conspicuously club-fonn abdomen ; the typical species and also others examined 

 have the abdomen normal in shape. 



Genus C a b a s a Walker. 



Type, C. rufithora-x Walker (^ pulchella Macquart). Tasmania. 



Characters. — The antennae are without the fourth joint. The anterior tibiae 

 contain an apical spur. The wings have the fourth posterior cell open. 



Note. — There does not appear to be any reliable character to separate this 

 genus, which contains one described species, from Brachyrrhopala. The species 

 belonging to the genus never have the hard integuments and the compact knob 



