320 NOTES ON AUSTRALIAN COLEOPTERA, 



ensure ready identification ; apart from these, however, D. puncti- 

 ventris diifers from D. ventralis hy its pilosity and by the evi- 

 dently greater separation of its intermediate coxse. 



vS. Australia ; Port Lincolu ; on plants growing on the sea- 

 shore. 



N.B. — The species described above may be thus tabulated. 

 A. The prothorax not longitudinally channelled. 

 B. Funicle of antennae with joints 3-7 scarcely 

 increasing in thickness. 

 C. Sides of the body clothed with long fine 



hairs pilosus. 



CC. Body not pilose ventralis. 



BB. Funicle with joints 3-7 gradually and con- 

 siderably thickening Craiofordi. 



A A. The prothorax with a well-defined channel... punctiventris. 



Desiantha. 



I have little or no doubt as to the correctness of my identification 

 of this genus, of which one of the species before me is evidently 

 D. silacea, Pasc. Mr. Pascoe's genus Brexius is characterised in 

 almost the same terms as Desiantha but is placed by its author 

 among the Amalactince as having the corbels of the hind tibiae 

 cavernous, and I cannot resist a doubt whether some of the species 

 described below might possibly be called Brexius by Mr. Pascoe if 

 they were before him. None of them have very decidedly 

 cavernous corbels but in several (e.g., D. major) although the 

 tibiae terminate externally as in species with open corbels and 

 their terminal fringe of cilia is directed hindward, it certainly 

 appears as if the aperture in which the tarsus is inserted is 

 partially closed when the aperture is looked into (i.e., looking up 

 the tibia). D. viacidata shows something of this structure, but 

 less distinctly than D. -major. T do not think however that it 

 would be at all possible to divide the following species into two 

 groups on this character. Mr. Pascoe calls the antennal club in 

 Brexius " adnata " and in Desiantha " distincta," but here again 



