New- Species of Staphylinidae from Singapore. 385 



which is either irregularly or scarcely 



at all punctured. 7. 



4. Antennae entirely testaceous ; species 



small -S-l-TS ram. 5. 



— Antennae with the last joints black, 



average size larger (1 •5-2-5 mm.). ^ : 

 8th dorsal segment with a median 

 stout spine and on either side a 

 slightly curved, pointed tooth project- 

 ing a little beyond the level of the apex 

 of the median spine and separated 

 from it by a semicircular excision . (68) tridentata Cam. 



5. 5th joint of the antennae not transverse, 



size larger (1-75 mm.). (J : 7th dorsal 

 segment with a very obsolete row of 

 six tubercles; 8th with a large flat 

 central tubercle at the base, the 

 posterior margin on either side with 

 a feeble emargination, so that it 

 presents three rounded crenulations, 

 the central one being the largest and 

 most prominent .... (70) crenulata Cam. 



— 5th joint of the antennae transverse, size 



smaller (•5-1-2 mm.). 6. 



6. Head and thorax with fine transverse, 



strigose gi-ound-sculpture. I^ength 

 1-2 mm. (J : 7th dorsal segment with 

 a curved, transverse row of six small 

 tubercles, of which the central pair are 

 considerably larger, the lateral some- 

 times more or less obsolete; 8th 

 nari'owed and slightly emarginate on 

 either side, so as to form three short 

 processes, the central one bluntly 

 rounded, wider and more produced 

 than the lateral, which are triangular . (69) granulosa Cam. 



— Head and thorax without ground- 



sculpture. Length -6 mm. (J : pos- 

 tero- external angles of the elytra with 

 a strong, raised oblique crest; 8th 

 dorsal segment narrowed and rounded (71) cristata Cam. 



7. Thorax exceedingly finely and sparingly 



punctured, ground- sculpture distinct, 

 transversely sti'igose. ^ : 8th dorsal 

 TRANS. ENT. SOC. LOND. 1920. — PARTS III, IV, V. (APR.'21) C C 



