BY WILLIAM MACLEAY, F.L.S., &C. 413 



and broader than long, truncate in front, and rounded towards the 

 base which is narrow and not emarginate ; there is a deep im- 

 pression at each angle of the base, and a well-marked median line 

 on the disc. The elytra are not quite the width of the thorax, 

 and about twice its length, of oval form, and marked with coarsely 

 punctured almost obsolete stride : there are two impressed punc- 

 tures on each elytron ; the one, a third of the length from the 

 base, the others about one-fourth from the apex. The anterior 

 tibiae are strongly bidentated externally. 



Long. 4 J lin., lat. 1 lin. 



In the descriptions given of the foregoing species of Scaritidce, I 

 have alluded to the groups of Carenum to which they seemed to 

 belong, and in explanation of that term I must refer the reader to 

 a paper on the Scaritidae of New Holland, read by me at a 

 meeting of the Entomological Society of Sydney in the year 1865, 

 and printed in the first volume of the Transactions of that Society. 

 A reference to the table at the end of that paper will explain 

 tolerably well what I mean, even though there have been vast 

 additions to the number of species since that period, and some of 

 my sub-divisions of the genus Carenum have been elevated into 

 independent genera. 



Indeed so many have been the additions made and changes pro- 

 pounded in this very interesting and beautiful Family of Insects 

 of late years, that a complete revision of it is much required, and 

 the task is one which I have almost decided upon undertaking. 

 Indeed it seems natural that I should, for the only naturalists 

 who besides myself have paid much attention to the study of the 

 Australian Scaritidce, — Count Castelnau and Baron De Chaudoir, 

 are both unfortunately dead. 



The two other species of Adephagous Coleoptera, which I now pro- 

 ceed to describe belong to the largest sub-family of the Carabidce — 

 the Feronidce — also very numerously represented in Australia, and 

 curiously enough, the insects of that family had also long been an 

 especial subject of study and investigation to the two eminent 

 naturalists whose names I have just mentioned with reference to 

 the Scaritidae. 



