414 STAPHYLINIDAE 



cf. 5th (visible) dorsal sej^^raent with two small tubercles 

 close together near posterior border. 6th rather broadly 

 emarginate, the emargination with four minute teeth and 

 limited on either side by a larger tooth. 



Tutau Kiver. four specimens. 



OUSILUSA CRASSTCOENTS n. sp. 



Near the preceding, but much smaller and narrower, the 

 antennae shorter and stouter, the 4th to 10th joints distinctly 

 transverse, the 11th nearly as long as the three preceding 

 together; the head less shining, much less coarsely and much 

 more superficially punctured ; thorax pitchy-brown, greasy- 

 lustrous, not granulate, but with close superficial umbilicate 

 punctures as on the head ; the dorsal impression more 

 U-shaped. The sculpture of the elytra is similar in character 

 but much finer than in the preceding species. Abdomen 

 yellowish-red, finely and sparingly punctured towards the 

 margins of the segments, the bases impunctate. Length 2 

 mm. 



cf . 6th (visible) dorsal segment very feebly emarginate 

 and scarcely perceptibly denticulate. 6th ventral segment 

 produced, narrowed and rounded at apex. 



Tutau River, one specimen. 



Plagiusa boeneensts n. sp. 



Subopaque, black, abdomen shining the posterior margins 

 of the segments obscurely rufescent. Antennfip black, the 1st, 

 2nd and 11th joints reddish-testaceous. Femora dark brown, 

 tibiae and tarsi reddish-testaceous. Length 3.3 mm. 



Very distinct from all the recognised species of this genus 

 by the black colour and large size. 



Head subpentagonal, black, subopaque, closely covered 

 with moderately coarse granules; eyes rather prominent. 

 Antennae long, gradually thickened towards apex, the 2nd 

 joint a little shorter than 3rd, elongate. 4th to 8th all distinctly 

 longer than broad, gradually decreasing in length, the 9th 

 scarcely longer than broad, 10th as long as broad, 11th scarcely 

 as long as the two preceding together. Thorax transverse, 

 widest before the middle, the sides rounded in front, rather 

 strongly, arcuately narrowed behind, the posterior angles 

 slightly obtuse, prominent; base before the scutellum with a 

 small fovea ; sculpture as on the head. 



