BY THOMAS G. SLOANE. 487 



narrow, reflexed; basal border weak, joining lateral border at 

 humeral angle without any projection. Prosternum bordered on 

 anterior margin. Metasternal episterna narrow, elongate. Ven- 

 tral segments impunctate, three apical ones transversely sulcate. 

 (J with three basal joints of anterior tarsi lightly dilatate and 

 squamulose beneath. 



Length 6-5-7"5, breadth 2'4-2-6 mm. 



Hab. — Upper Ord River (Hehns). 



A distinct species, which is differentiated thoroughly from all 

 the previously described species of Darodilia by having the head 

 strongly biimpressed; the sides of the prothorax subsinuate before 

 the base; the elytra with six strongly impressed strite on each, 

 and the base emarginate. 



Genus Abacbtus. 



96. A. MACLEAYi, Blkb.; I.e. Supp. Sp. 7495. Bah. — Upper 

 Ord River (Helms). Seems a slight variety. 



Tribe LICINIXI. 



Having a new genus to add to the Licinini, it has seemed 

 advisable to offer a tabular list of the Australian genera belong- 

 ing to the tribe, more especially as some of these are now referred 

 to other tribes. 



Lestignathus seems certainly to belong to the Licinini notwith- 

 standing that it has been referred to the Platynini on the high 

 authority of Dr. G. H. Horn (Trans. Am. Ent. Soc. 1881, ix. 

 p. 143); it is nearly allied to Lacordairia, the anterior tarsi of 

 the (J being as in the Licinini, not as in the Platynini. I would 

 draw attention to Dr. Horn's remark on the mentum of Lestig- 

 nathus—"! observe that the suture between the mentum and its 

 support is as completely obliterated as in Enceladus. It is the 

 only instance known to me of this character in the present 

 [Platynini] or the preceding tribe " [Licinini]. This, however, 

 occurs to a more or less degree in the genera Lacordairia, 

 Siagonyx, Flatylytron, Microferonia and Hormacrus. 



