2 ARKIV FÖR ZOOLOGI. BAND 10. N.O 10. 



life have been previously recorded by Sloane from Marster's 

 observations on the Burnett River at Gayndah in Queensland. 

 The species is apparently distributed all över the northern 

 parts of Australia. 



2. Megacephala intermedia Sloane. — Four specimens, 

 I ^ and 2 5?» taken at the Fitzroy River near Noonkanbah, 

 February 1911, and living in exactly the same way as M. 

 crucigera Macl. 



The species has been recorded before from Kings Sound 

 and Carnot Bay i Northwest Australia. Apparently it is found 

 also in the interiör parts of the Kimberley District. 



3. Megacephala basalis Macl. — Abundant in the in- 

 teriör parts of the Kimberley District, especially on the 

 northern slopes of the St. George Range, where I saw swarms 

 of them running by night on the damp ground near the 

 small so called «Pandanus Springs», February 1911. Distributed 

 all över the tropics of Australia. 



4. Megacephala Bostocki Gast. — Two specimens, 1 J" 

 and 1 5, from the damp banks of the Fitzroy River, November 

 1910. The species is easily differentiated from all other by 

 the very deep concavity on the metepisterna. The female has 

 the inflexed börder decidedly excised opposite the third ventral 

 segment, but the male does not show any trace whatever of that 

 character. Distributed all över the tropics of Australia. 



5. Megacephala Åiistralasiae Hope. — One female taken 

 at Derby in Nordwest-Australia, October 1910. It measures 

 15 mm., and is of the ordinary type. 



In the collections of the Swedish State Museum there are 

 two large female specimens of a Megacephala labelled «Queens- 

 lands>. Their length is not less than 20 mm., the colour is 

 much darker, and the black of the elytra more distributed. 

 The sculpture of elytra is markedly wavy-rugose-punctate, 

 and the row of larger punctures much more strongly marked. 

 But otherwise there are no distinguishing characters from 

 the ordinary type of the species Australasia Hope. That is 

 why I regard them as merely a variety of this very variable 

 species. 



