498 A REVISION OF THE STAPHYLINIDiE OF AUSTRALIA, 



twice as long as the preceding one, the last joint obliquely emar- 

 ginate at the extremity. Prothorax convex, rather strongly nar- 

 rowed behind, slightly sinuate behind the middle, with a sei'ies of 

 four moderately strongly impressed punctures on each side of the 

 middle, and an oblique series of four or five punctures at the 

 shoulders ; the anterior margin and the sides strongly punctured 

 and pilose ; the posterior angles rounded. Scutellum moderately 

 strongly and closely punctured. Elytra considerably longer than 

 the prothorax, widening posteriorly, rather closely and finely 

 rugose-punctate. Abdomen narrowed behind, strongly asperate- 

 punctate on each side of the middle, which is smooth. Legs 

 reddish testaceous. Length 18-23 mm. 



(J Differs in having the head much larger, the anterior tarsi 

 more strongly dilated, and the 6tli and 7th abdominal segments 

 more strongly emarginate. 



Mulgrave River, North Queensland. 



Allied to Mysolius aurichalceus from New Guinea, but distin- 

 guished by the different punctuation of the head and prothoi'ax, 

 and by having the legs uniformly reddish testaceous. The species 

 is represented in the Macleay Museum by a series of both sexes. 



38. Cafius. 



Stephens, 111. Brit. Ent. V. p. 245 (l8S2)—Philonthus 

 (subg.) Erichson, Gen. Staph, p. 427 (1840); Lacordaire, Gen. 

 Col. IL p. 8L 



General characters of Philonthus. Mentum very short. Ligula 

 membranous, entire, rounded in front. Paraglossse ciliate in- 

 ternally, acuminate in front. Maxillary palpi short, the last three 

 joints equal. Labial palpi filiform, the joints gradually increasing 

 in length. Mandibles obtusely dentate in the middle. Labrum 

 transverse, emarginate in front, the margins membranous and 

 ciliate. Head large, connected with the prothorax by a moderate 

 neck. Eyes small. Antennte short, pubescent, the 1st joint 



