510 A REVISION OF THE STAPHYLINIDiE OF AUSTRALIA, 



Head rather strongly transverse, somewhat impressed in front, 

 longitudinally sulcate in the middle, with two rather strongly 

 impressed punctures on each side of the middle, and two on the 

 inner orbital margin of the eye ; strongly and rather closely 

 punctured behind the eyes, and near the posterior angles. An- 

 tennae somewhat thickened towards the extremity, the first three 

 joints scarcely paler than the rest, joints 4-10 pilose. Prothorax 

 rather convex, narrowed towards the base, truncate in front, 

 rounded behind, with a dorsal series of ten or eleven strongly im- 

 pressed punctures on each side of the middle, between these dorsal 

 series and the margins strongly and sparingly punctured, an irre- 

 gular row of punctures at the anterior angles. Scutellum rather 

 finely and densely punctured. Elytra inclining to brassy green, 

 finely pubescent, slightly convex, a little shorter than the pro- 

 thorax, narrowed in front, rather strongly and not very closely 

 punctured, the punctui-es more dense and less strong at the base, 

 very irregularly punctui'ed at the sides ; all the angles rounded. 

 Abdomen strongly and moderately closely asperate-punctate, 

 rather thickly clothed with long black pubescence. Legs pitchy. 

 Length 10 mm. 



Lord Howe Island. 



This species may be distinguished from Hesperus haemorrhoidalis, 

 to which it is nearly allied, by the colour of the antennae, which 

 have only the terminal joints testaceous, and by the punctuation 

 of the prothorax ; the elyti-a ai-e without a trace of red at the 

 sides, and the legs are much darker. 



It is probable that this form is a modification of H. haemorrhoi- 

 dalis, the result of long isolation. Like the typical form found 

 on the mainland it is provided with ample wings. 



158. Hesperus australis. 



Philonthus australis, Macleay, Trans. Ent. Soc. N.S.W. 11. p.. 

 139 (1871) — Hesperus australis, Fauvel, Ann. Mus. Genov. X. 

 p. 260 (1877). 



