New Species of Stcfphijlinidae from Singapore. 387 



Adelarthra Cam. 

 Shining dark pitchy-red; el}rtra pitchy- 

 black; .3rd, 4th and 8th abdominal 

 segments reddish-testaceous. Length 

 1-2 mm. ...... (79) harbara Cam. 



Hetairotermes, n.n. 

 Disc of the elytra glabrous, the sides 



and postero-external angles finely and 



moderately closely ])unctured . . (80) arjiUs Cam. 



Disc of the elytra unifoinily but spaiingly 



punctured (81) ^/('cews Cam. 



Pseudatheta Cam. 

 Rufo-testaceous, the elytra (except the 

 base), posterior half of the 5th and 

 whole of the 6th abdominal segments 

 black. Length 1-75 mm. . . . (82) eJegans Cam. 



Pelekoglossa Cam. 

 Pitchy, moderately shining, the thorax, 

 base and apex of the abdomen obscure 

 reddish-testaceous; first three joints 

 of the antennae fusco-testaceous . (83) cingulata Cam, 



Placusa Er. 

 5th joint of the antennae as broad as 



long; species larger (2 mm.), pitchy, 



elytra testaceous, infuscate at the 



scutellum. (^ : 8th dorsal segment 



of the abdomen finely crenulate ; 6th 



ventral segment narrowed and 



produced ..... (84) convra Cam. 



5th joint of the antennae distinctly trans- 

 verse, species smaller (1 to 1-6 mm.). 2. 

 First three joints of the antennae clear 



testaceous; species larger (1-6 mm.) 



and more robust; thorax pitchy, 



elytra obscure testaceous. (J : 8th 



dorsal segment deeply excised on either 



side, the lateral margin forming a long, 



sharp, incm-ved spine, the central 



portion forming a lobe with rounded 



apex furnished with a broad, flat 



tubercle on the disc , . . (85) hispina Cam. 



