BY E. W. FERGUSON. 803 



base feebly emarginate, humeral angles marked, but not pro- 

 duced; seriate punctures rather large, open, foveiform, the intra- 

 strial granules obscured by clothing ; interstices tuberculate, 

 tubercles variable in size in different specimens, all much of the 

 same size in the same specimen, all the interstices, as a rule, 

 closely and evenly tuberculate, the tubercles more separated on 

 the declivity. Sides with small, round, flattened tubercles, ob- 

 solete on lower interstices. Ventral segments flattened, basal 

 segments not longitudinally grooved. Anterior femora without 

 ridge beneath; tibiae not notched; anterior tarsi with third joint 

 feebly asymmetrical. Dimensions : (J, 18 x 5*5 mm. 



9- Rather more ovate, undersurface convex. 



Hab. — S.A.: Fowler Bay, Port Lincoln, Ardrossan, Blanche- 

 town, Moonta, Terowie. 



Described from a series of specimens in my own collection, 

 which have been compared with the type in the Macleay 

 Museum. 



The species is one of the most variable in the whole genus in 

 size, colour, and tuberculation. In some specimens, the clothing 

 is almost entirely of a cinereous colour; in others, the dark colour 

 predominates; as a rule, on the elytra, the lateral margins have 

 a broad, cinereous vitta; and the rest of the surface is maculate, 

 to a greater or less extent, with this colour, so that the dark 

 areas appear as macules on a light ground. In some specimens, 

 the light colour is of a reddish-ochraceous tint; while many speci- 

 mens appear to be caked with a coloured meal. 



The tubercles vary much in size; as a rule, all the interstices 

 are closely tuberculate, but the tubercles on the second may be 

 distinctly more separated. 



The ventral clothing, while vittate in character, has not the 

 strong, hirsute structure of the other vittate species; in some, 

 the median vitta is rather darker than the lateral ones. 



The even tuberculation of the fifth interstice would associate 

 this species with Group iii., but it has an entirely different facies, 

 and the ventral clothing is very different. I prefer to place it 

 at the end of the genus, as an anomalous species. 



