New Species of Stajyhylinidae from Singapore. 391 



5. 4th joint of the antennae longer than 



broad, the penultimate joints scarcely 



transverse; size larger (2 mm.) . • {\Q5) fuscipennis CdbXa.. 



— 4th joint of the antennae distinctly 



transverse, the penultimate joints 



strongly transverse ; size smaller. 6. 



6. Abdomen reddish-testaceous, the 6th 



segment pitchy; posterior angles of 



the thorax forming a minute tooth . (104) cingulala Cam. 



— Abdomen black, the posterior half of the 



7th and the 8th segment reddish- 

 testaceous; posterior angles of the 

 thorax not forming a tooth . . (103) bidens Cam. 



7. 4th joint of the antennae square, size 



smaller (1-75 mm.) .... variventris Kr. 



— 4th joint of the antennae distinctly trans- 



verse; size larger (2-2-4 mm.). 8. 



8. Larger and more robust; fore-parts 



more coarsely punctured; length 

 2-4 mm. ^ : 8th dorsal segment 

 emarginate on either side, the emar- 

 gination bounded externally by a 

 rather long, sharp tooth, the posterior 

 border between the emarginations with 

 eight sharp teeth .... (107) denticulata Cam. 



— Smaller and less robust; fore-parts more 



finely sculptured ; length 2 mm. ^ : 

 8th dorsal segment with a feeble 

 emargination on either side, bounded 

 externally by a small tooth, the 

 posterior border between the emargina- 

 tions finely serrate . . . . (106) serrate Cam. 



Thectura Thums. 

 1. Rather shining; head black, thorax 

 pitchy-brown, elytra and 5th and 6th 

 abdominal segments pitchy, the rest 

 of the latter reddish-testaceous. 

 Length 1-6 mm. . . . (lOS) brunneicoll is Cam. 



Heterota Rey. 

 L Black, with greasy lustre; elytra with 

 indeterminate orange spot occuj^ying 

 the sutural region towards the apex; 



