New Species of Staphylinidae from Singapore. 349 



VI. Sub-family Staphylininae. 

 Anterior portion of the prosternum 



separated by a suture from the 



posterior portion. Antennae at the 



base usually nearer to each other than 



to the eyes, at least not farther apart . Xantholinini. 

 Anterior portion of the prosternum not 



separated by a suture from the 



posterior portion. 2. 



Anterior angles of the thorax extended 



considerably beyond the anterior 



angles of the prosternum. Under 



side of the head with a longitudinal 



raised line at least behind . . . Quediini. 



Anterior angles of the thorax not or 



scarcely extended beyond the anterior 



angles of the prosternum. Under side 



of the head without longitudinal 



raised line Staphylinini. 



VII. Sub-family Pygosteninae. 

 One genus : Delibius Fam. (q. v.). 



VIII. Sub-family Tachyporinae. 

 Sides of the thorax explanate ; sculpture 



of the head and thorax coarse and 



rugose ...... 



Sides of the thorax not explanate; 



sculpture of the head and thorax fine 



or very fine, not rugose 



Megarthropsini. 



Tachyporini. 



IX. Sub-family Adinopsinae. 

 One genus : Adinopsis, n. {q. v.). 



X. Sub-family Aleocharinae. 



1. Head more or less produced in front. 2. 

 -— Head not produced in front. 4. 



2. Tarsal formula 4, 4, 4 . . . . Diglottini. 



— Tarsal formula 4, 5, 5, or 4, 4, 5. 3. 



3. Tarsal formula 4, 5, 5 . . . . Pronomaeini. 



— Tarsal formula 4, 4, 5 . . . . Myllaenini. 



4. Antennae 10-jointed, tarsi 4-jointed . Oligotini. 



— Antennae 11 -jointed. 5. 



5. Tarsal formula 5, 5, 5 . . ■ . . Aleocharini. 



