14 



ARKIV FÖR ZOOLOGI. BAND 10. N:0 6. 



one; eyes smalJ, a little prominent; prothorax about as long 

 as broad, bisinuate at the sides, being broadest in the middle, 

 at base with a strong transversal impression, longitudinally 

 stigose with fine and short yellow hairs, on each side a 

 distinct impression; elytra very narrow at base, being broadest 

 behind the middle, shiny with very fine punctures, at base 

 with three deep impressions, the strise very fine and in- 

 distinct; viewed from certain direetions there seem to be an 

 extremeJy short pubescence, the interstices between the basal 

 impressions continuing backwards like elevated ridges. 



Lengtli of body: 3,6 mm. 



Of this very curious form I have found one specimen 

 under bark not far from Derby in the Kimberley district, 

 N. W. Australia, October 1910. 



/. 



Fig. (3. Decemplocotes brevipennis (Pic.) Mjöb. 



Ectrephes clavatus n. sp. (Textfig. 5.) 



Short and rounded, very convex, somewhat shiny, hairy, 

 head elongate, eyes rounded; antennas short, first joint very 

 enlarged, second small, rounded, the club flat, the joints 

 3 — 6 gradually and very slightly increasing in breadth, placed 

 very close to each other, giving the impression of being partly 

 grown together, the exteriör (hind-) angle of the sixth joint 

 a little prolonged, receiving the last one; prothorax broader 

 than long, a little constricted in front, which can hardly be 

 seen from above, hairy, longitudinally strigose, with the lines 

 all converging towards the very deep basal impressions; on 

 each side a rounded, point-like spöt, and opposite to this on 

 the very margin some dense yellow hairs, standing very close 



