436 A REVISION OF THE STAPHYLINID.E OF AUSTRALIA, 



Minima, rufo-testacea, nitidula, abdomine nitido, vix attenuato, 

 longius fulvo pubescente ; capite praesertim prope oculos et vertice 

 infuscato ; cingulo abdominali nigro angusto, segmenturn quintum 

 praeter tertiam partem apicalem occupante ; creberrime subtiliter, 

 abdomine fortius multoque parcius, praesertim apice, subasperatim 

 punctata ; antennis par vis, brevissimis, articulis 4.° parum, 5-10 sat 

 fortiter trans versis, 11.° acuminato ; capite latiusculo, brevi ; 

 thorace lato, brevissimo, capite tertia parte latiore, lateribus 

 rotundatis, antice fortius quam basi angustato, angulis posticis 

 obtusis : elytris thorace paulo longioribus, transversis ; abdomine 

 circa apicem vix nigro pilosulo. Long 1| mm. (Fvl.) 



New South Wales. 



10. POLYLOBUS. 



Solier, Gay's Hist. Chile, Zool. IV., p. 354 (1850); Lacordaire, 

 Gen. Col. II., p. 157. 



Mentum narrowed towards its extremity. Ligula broad, bifid. 

 Maxillary palpi 4-jointed, the 3rd joint conical, the 4th shorter, 

 narrow and filiform. Labial palpi 3-jointed, the terminal joint 

 shorter than the 2nd, cylindrical. Maxillse with the external lobe 

 divided into several lobes (processes) at the apex. Mandibles 

 provided internally with a denticulated membrane. Head short 

 retracted. Antenna? thickened towards the extremity, joints 4-10 

 obconical. Prothorax broadly transverse, narrowed in front, 

 Elytra sinuate behind near the external angles. Abdomen either 

 parallel-sided or narrowed behind. Legs rather short ; tarsi 5:5:5. 



This genus is distinguished by the structure of the external 

 lobe of the maxillee. It is largely represented in Chili and is 

 another instance of an American genus finding its nearest allies in 

 Australia. 



39. POLYLOBUS CINCTUS. 



Polylohus ductus, Fauvel, Ann. Mus. Genov. X., p. 284 (1877.) 



In genere latissimus, antice pbsticeque attenuatus, sat depressus, 



rufus, nitidulus, antennarum articulo ultimo, elytrisque, praeter 



humeros angulumque apicalem, piceis, abdominis nitidissimi 



segmentis 4-5 totis sextoque dimidia parte basali nigris ; elytris 



