BY MALCOLM CAMERON. VIo 



longer and more slender first joint of the antenna* which is 

 completely sulcata, the shorter frontal horns, larger eyes, 

 more transverse, more parallel-sided thorax. 

 Mount Dulit, 3500 feet, two specimens. 



Priochirus (Triacanthochirus) mjobergi n. sp. 



Black, shining depressed ; frontal impression twice as hroad 

 as long, the teeth equal, pointed, prominent, vertex sulcate. 

 Thorax distinctly transverse, slightly narrower hehind. the 

 sides moderately coarsely and moderately closely punctured 

 practically to the lateral marsin, hase completelv bordered. 

 Elytra one-third lonsfer than the thorax. Abdonien very 

 finely biserially punctured, the apex red. Legs red. Length 

 10.5 mm. 



Scarcely differing in tlie armature and frontal impression 

 from P. neptuntts Heller, but more depressed, the thorax 

 more transverse, the sides rather more finely punctured, the 

 abdomen more finelv punctured, the antennfp a little stouter 

 and the legs entirely red. The antennip have the 1st joint 

 emarginate at the apex, the 5th to 10th transverse, not 

 increasing much in breadth. The thorax is scarcely alutaceous. 



Songei Tutau, two specimens; Mt. ISTurud. 5000-7000 feet, 

 numerous specimens. 



Priochirus (Triacanthochtrus) corneensis n. sp. CFig. 2.'i 



Black, shining, depressed ; frontal impression 1^^ times as 

 broad as long, the median tooth stout and prominent, slightly 

 projecting beyond the level of the lateral teeth. AntennfP 

 with the ]st joint emarginate at apex, the 7th to 10th joints 

 transverse. Thorax transverse a little narrowed in front, 

 feebly alutaceous, the disc sometimes bifurcate, the sides 

 punctured practically up to the lateral margin, the base 

 completely bordered. Elytra about a third longer than the 

 thorax. Abdomen finely, biserally punctured, apex some- 

 times ferruginous. Legs black. Length 10 mm. 



Size and build of P. nepfunus Heller and wdth similar an- 

 tenna^ but with stouter median tooth and the thorax completely 

 margined at the base. From P. poseidon Bernh., (Fig. 1) 

 it is distinguished by the narrower frontal impression which 

 is more elevated in the middle and more depressed at the sides, 



