590 



Onesorus albatus, Lea. 

 Numerous specimens were taken, usually walking on the 

 sandhills; they vary in length from 8 to 12 mm., and most of 

 them have the clothing irregularly distributed, as on the type, 

 but on one specimen it is almost uniform on the elytra. 

 Clayton and Cooper Creeks, Kopperamanna, Lakes Crossing, 

 Strzelecki Creek, Trinity. 



ESSOL1THNA JONESI, n. Sp. 



<S . Black ; densely clothed with mouse-coloured scales, 

 becoming paler on sides and white or whitish on under-surface, 

 upper-surface with numerous white scales scattered singly, 

 and on the elytra often condensed into loose spots ; muzzle with 

 a few golden-green or green scales; elytra with numerous stiff 

 erect setae on and near the shoulders, on the fourth to sixth 

 interstices. 



Head large, with dense concealed punctures. Rostrum 

 short, sides oblique. Antennae short and stout; first joint of 

 funicle about as long as second and third combined, third- 

 seventh transverse. Protkorax about once and one-half as 

 wide as long, sides moderately rounded ; with small dense 

 punctiferous granules, normally quite concealed. Elytra sub- 

 cordate, widest across basal third, but at base no wider than 

 base of prothorax ; with rows of rather large, round punctures, 

 but appearing small and narrow through clothing. Legs short 

 and stout ; femora each conspicuously notched on upper-surface 

 near apex. Length (d, 9)? 4-5 mm. 



9 • Differs in being wider, abdomen more convex, and 

 femora each very feebly incurved on upper surface near apex. 



Hah. — South Australia: Ooldea. Type, I. 7611. 



An unusually distinct species, in general appearance 

 somewhat like cordipennis, but the head and femora of the 

 male very different; the single claw to each tarsus readily 

 distinguishes it from Polyphrades, to which genus, at first 

 glance, it appears to belong. The conspicuous notch on the 

 upper-6urface of each of the femora of the male is a remark- 

 able character; on the female these notches are scarcely 

 indicated; the disposition of the elytral setae is also unusual. 

 On fresh specimens the upper-surface has a conspicuously 

 speckled appearance, owing to the numerous white scales 

 scattered about, but on less well-preserved specimens these are 

 less noticeable, and the surface appears of a uniform dingy- 

 grey. Mr. Jones obtained numerous specimens on young 

 mallee shoots in April and May, and we took one in January. 



E. seriata, Blackb., Ooldea. 



E. squalida, Blackb., Farina. 



Acherres granulatus, Ferg., Ooldea. 



