BY THOMAS G. SLOANE. 405 



Four Australian species of Microlestes have been described, 

 which may be tabulated as under(iT/. hnmeralis, if. yarrce, and 

 M. australiensis were described as species of Dromius): — 



A. Species with bicolorous elytra. 



B. Elytra infuscate, with base widely (also a sutural spot near 



apex) testaceous M. h^imeralis M&oX. 



BB. Elytra testaceous, with a narrow black fascia behind 



middle M. atri/asciatus SI. 



AA. Black species j M. yarrce Blkh. 



^ {M. australiensis SI. 



Subfamily PSEUDOMORPHIN.^. 



Genus Adelotopus. 



Adelotopus insignis, n.sp. 



Elongate-oval, parallel, convex. Piceous-black, shining; 

 under surface piceous. Head large(2 mm. across eyes), sparsely 

 but distinctly punctate. Prothorax large, parallel on sides, 

 broader than long(2'2 x 2-5 mm.), sparsely minutely punctate; 

 anterior margin truncate; anterior angles marked, subrectangular; 

 inner angle formed by junction of lateral and anteiioi- margins 

 sharply marked; base lightly emarginate above peduncle; basal 

 angles not marked, very widely rounded; lateral margin not 

 explanate; lateral cliannel narrow; border wide and reflexed on 

 sides, entire and very narrow ou apex and base. Elytra parallel, 

 not wider than prothorax(4 x 2'5 mm.), not covering apex of 

 body, seriate-punctate(nine rows of punctures on each elytron); 

 inflexed margins with a row of setigerous punctures (setse near 

 shoulders duplicated and visible from above). Exposed apex of 

 body strongly punctate. Antennae much longer and more 

 slender than usual in Adelotopus, extending to middle of anterior 

 coxal cavities; basal joint much larger and more inflated than 

 usual iu the genus. Labial palpi very widely securiform. Pros- 

 ternum not carinate, punctate before coxse; intercoxal part 

 depressed, shortly truncate posteriorly. Length 7, breadth 

 2*5 mm. 



Hab. — Victoria : Sea Lake, Mallee District(Goudie). Coll. 

 Sloane. 



