218 CEBAMBYCIDjl. 



B. Prothorax olsoletely tuberculate at tlie sides. 

 242. PolyzonilS obtllSUS, Sates, Cist. Ent. ii, p. 413 (1879). 



Head and prothorax dark blue or bluish-black and slightly 

 nitid ; elytra violaceous black and dull, with two broad yellow bands 

 across them one a little before, the other behind the middle ; legs 

 and antennae black ; metathorax and abdomen, except on the last 

 segment, covered with silvery -grey pubescence. Head very 

 densely rugulose-punctate. Antennae a little longer than the 

 body in both sexes, not appreciably thickened towards the apex ; 

 first joint rather densely punctured, seventh to tenth slightly 

 angulate at the apex on the anterior side. Prothorax of tf 

 without lateral tubercles, but with the pleurae bulged out at the 

 sides from near the front margin to a little behind the middle ; 

 the pleurae with the prosternum thus form a continuous strongly 

 convex and very finely and densely punctulate area, sharply 

 marked off at the sides from the pronotum ; the latter closely 

 striated ; the striae transverse near the front margin, which is 

 slightly rounded in the middle, somewhat longitudinal, more or 

 less wavy or broken on the middle of the disc, and oblique or 

 longitudinal near the sides ; prothorax of $ with a feeble, nearly 

 obsolete, tubercle at the middle of each side ; the pronotum 

 striated as in the d , the pleurae and prosternum transversely 

 striated and not swollen. Elytra very closely and finely punctu- 

 late, very faintly pubescent ; obtusely rounded at the apex. Hind 

 femora reach nearly to the apex of the elytra in both sexes. 



Length 15-24 ; breadth 3-3f mm. 



Hab. Burma : Rangoon ; Tenasserim ; Cambodia (Mouhot) ; 



243. Polyzonus watsoni, sp. n. 



c?. Metallic green; head, prothorax and scutellum nitid ; 

 elytra marked each with two rather large fulvous spots, one at 

 somewhat less than one-third from the base, the other at about 

 one-third from the apex ; the anterior spot oval in shape, nearer 

 to the suture than to the outer margin ; the posterior spot more 

 irregular in shape, extends as close to the outer margin as to 

 the suture ; the shoulders and a narrow sutural band nitid, the 

 rest of the surface subnitid, in parts somewhat dull. Head 

 densely rugulose-punctate above : the front finely and rather 

 densely punctulate, marked with a median groove ; the clypeus 

 sparsely punctulate, transversely impressed below, marked off from 

 the front by an arcuate groove. Antennas reach only to the 

 apical fourth of the elytra ; bluish black, the first joint green, 

 densely punctate ; sixth to tenth acutely angulate or subdentate 

 anteriorly at the apex. Prothorax swollen in the anterior half at 



