10 ARKIV FÖR ZOOLOGI. BAND 10. NIO (). 



tennae long and slender, the four first joints with whitish 

 pubescence, the other ones black, prothorax broader and more 

 ronnded on the sides, slightly constricted at the base, with 

 a spöt of whitish pubescence near the anterior margin and a 

 whitish band across the base. Scutellum entirely white; elytra 

 with the humeral angles rounded, finely punctate-striate, 

 the interstices broad and flat with some smaller punctures 

 and here and there transverse striolation. On the basal third 

 part on the sixth, seventh and eighth interstice a white spöt, 

 the interiör one being the largest and the exteriör the small- 

 est, placed a little nearer the base. On the last third part. 



Fig. 2. Ptinus australicus Mjör>. n. sp. 



just where the elytra begin to fall off, a white fascia composed 

 of five distinct spöts placed respectively on the third, fourth, 

 fifth, sixth and seventh interstice, the ones on the fourth and 

 the sixth ones being the largest; the elytra on their last 

 third part tapering towards the apex. Legs and the whole 

 ventral surface more or less snowy white. 



Length of body: 3,5 mm. 



Four specimens from the interiör of the Kimberley district 

 in North-West Austraha, January and March, under bark on 

 gum trees. 



There is a slight possibility that this very distinct spe- 

 cies might be identical with Mc. Leay's Pt. albomaculatus so 

 shortly and incompletely (in six lines) described, but I do not 

 think so. His species has a round spöt near the humeral 

 angles, which can hardly be said of this form. 



