382 Mr. C. J. Gahan on new Longicorn Coleoptera 



Hab. Tliarawaddy, in Burma (G. Q. Corhett). 



Deep black ; \\\\\\ the front and sides ot" the liead, two 

 transverse bands of the prothorax, one anteriorly, the other at 

 the base, both broadly interrupted in the middle, the scutellum, 

 six sjiots and two ])osterior vittaj on each elytron, covered 

 with a dense yellowish-tawny pubescence. Of the six spots 

 on each elytron three form a transverse row a little behind 

 the base, the innermost spot being much smaller than either 

 of the two exterior; two spots are placed obliquely near the 

 middle, with the inner spot farther back than the outer; the 

 remaining spot is small and triangular and is placed close to 

 the suture in a line with, and a little farther back than, the 

 innermost spot of the anterior row. The two posterior vittie, 

 of which that nearest the suture is shorter and broader, 

 narrow behind and unite at the apical border. The black 

 portions of the ])rothorax and elytra, which are made opaque 

 by a black powdery or scaly pubescence, are seen to be rather 

 thickly and strongly punctured. The body underneath and 

 parts of the legs are clothed with a less dense pale fulvous 

 pubescence. 



The spots and vlttte of this species will probably be found 

 to vary. The entirely black antennte, together with the style 

 of marking, distinguish it at once from other species of the 

 genus. 



POLYTRETUS, gen. nov. 



Head with the front rectangular, slightly higher than its 

 breadth, with the antennal tubercles rather prominent, slightly 

 divergent, and at their base approximate, so tiiat the concavity 

 between them is deep and rather narrow. Eyes moderately 

 large, their upper lobes narrow, their lower lobes extending 

 downwards more than halfway to the base of the mandibles. 

 Anteiniai about half as long again as the body, with the scape 

 moderately elongate and gradually and not strongly thickened 

 to the apex, where it is provided with a narrow and completely 

 margined cicatrice; third joint about half as long again as 

 the scape ; the fourth and following joints gradually dimi- 

 nishing in length ; the distal halves of the third and fourth 

 joints thickly fringed with hairs on the outer side. Prothorax 

 slightly transverse, furnished at the middle of each side with 

 a rather short conical tubercle which points somewhat obliquely 

 upwards. Elytra rather elongate, with the sides subparallel 

 and the apices rounded. At the base, between the scutellum 

 and the shoulder, each elytron presents a small angular lobe 

 which projects forwards and slightly overlaps the base of the 



