New Species of Staphylinidae from Sitigapore. 355 



QUEDIINI. 



Antennae strongly geniculate . Acylophorus Nordm. 



Pygostenini. 

 Form navicular. Tarsal formula 4, 4, 5 : 

 legs long; intermediate coxae widely 

 separated; antennae longer than the 

 head and thorax ; scutellum very large Delibius Fauv. 



M EG A RTHROPSINI. 



1. Sides of the thorax explanate ; sculpture 



■ugose Megarthropsis Car 



of head and thorax coarse and 



Tachyporini. 



1. Tarsal formula 5, 4, 4 . 



— Tarsal formula 5, 5, 5. 



2. Last joint of the maxillary palpi small, 



subulate; abdomen not or scarcely 

 margined ..... 



— Last joint of the maxillary palpi not 



subulate, often longer than the 3rd. 



3. Species very convex, strongly conti'actile 



and retractile ; posterior angles of the 

 thorax effaced ; tibiae not spinose 



— Species much less convex, not contractile ; 



posterior angles of the thorax distinct ; 

 tibiae more or less spinose. 



4. 1st joint of the posterior tarsi as long as 



the three following together 



— 1st joint of posterior tarsi shorter than 



the three following together. 



5. 1st visible dorsal segment at the base on 



either side of the middle line with a 

 short transversely extended tomentose 

 patch. Species larger 



— 1st visible dorsal segment without tomen- 



tose patches. Species small or very 

 small ...... 



Gymnusini. 

 1. Head deflexed, concealed; the sides and 

 anterior margin of the thorax forming 

 a semi-circle, posterior angles promin- 

 ent, pointed. Legs slender, all the 



Atanygnathus Jacobson. 

 2. 



Conosoma Kr. 



Mimocyptus Cam. 



Leucoparyphus Kr. 



Tachinomorphus Kr. 



Coproporus Kr 



