438 A REVISION OF THE STAPHYLINID.E OF AUSTRALIA, 



41. POLYLOBUS SODAL1S, sp. n. 



Elongate, very slightly convex, somewhat narrowed both in 

 front and behind, testaceous, somewhat shining ; antennse tes- 

 taceous ; head, elytra, and 4th and 5th abdominal segments dusky. 



Head finely and rather closely punctured, the pubescence yellow. 

 Antennse slightly thickened towards the extremity, similar in form 

 to those of the preceding species. Prothorax strongly transverse, 

 a little more narrowed in front than behind, finely, irregularly and 

 rather closely punctured ; sides arcuately rounded ; posterior 

 angles rounded. Elytra considerably longer than the prothorax, 

 narrower in front than behind, very finely and not very closely 

 punctured ; the sides feebly rounded ; the posterior margin deeply 

 sinuate just before the external angles which are rather strongly 

 produced. Abdomen narrowed behind, finely and closely punctured. 

 Legs pale testaceous. Length 1^- mm. 



Sydney, New South Wales. 



Apart from its smaller size and slightly more depressed form 

 this species may be known from Polylobus pallidipennis by having 

 the prothorax less narrowed in front and more closely punctured, 

 the elytra dusky and the abdominal segments finely punctured 

 throughout. 



42. Polylobus flavicollis. 



Homalota flavicollis, Macleay, Trans. Ent. Soc. N.S.W. II. , 

 p. 135 (1871). 



Elongate, slightly convex, narrowed in front and behind, reddish 

 testaceous, somewhat shining ; antennae fuscous, the base and apex 

 reddish testaceous ; head, elytra, except near the humeral angles, 

 and 4th and 5th abdominal segments blue- black. 



Head very finely and not very closely punctured, the pubescence 

 yellow. Antennae somewhat thickened towards the extremity ; 

 joints 2-3 nearly equal in length, 4th considerably shorter, 5-10 

 strongly transverse, 11th as long as the two preceding joints 

 together, acuminate at the apex. Prothorax transverse, narrowed 

 in front, finely and closely punctured, the pubescence very fine. 

 Elytra longer than the pro the rax, at the base about as wide as the 



