208 MR. M. JACOBY ON NEW [Feb. 17, 



very finely and closely punctured, except near the lateral margin, 

 where stronger punctures are placed anteriorly, while a short but 

 deep groove limits the posterior portion. The punctuation of the 

 elytra consists of four stronger double rows of punctures ; the inter- 

 stices are everywhere closely, irregularly, and finely punctured. The 

 antennae are entirely black ; the third joint is only one half longer 

 than the preceding. 



It is possible that the Japanese specimen represents a closely allied 

 but distinct form. 



Chrysomela obscurofasciata, sp. nov. (Plate XI. fig. 11.) 



Oblong, convex, subcylindrical, dark violaceous blue or green 

 above, below fuscous violaceous ; thorax closely punctured, the 

 sides thickened, foveolate ; elytra closely and irregularly punctured, 

 the interstices rugose, violaceous blue, the sides with a broad obscure 

 purplish band. 



Length 5-6| lines. 



Head not very strongly punctured at the vertex and at the sides, 

 the middle of the front nearly impunctate. Antennae slender, nearly 

 half the length of the body, the six lower joints metallic blue, the 

 rest black. Thorax transversely convex, the anterior margin slightly 

 concave, posterior one broadly rounded, the sides slightly rounded 

 in front, nearly straight at the base, the lateral margin much thickened 

 through its entire length, deeply foveolate-punctate within, rest of 

 the surface closely and more finely punctured. Scutellum impunc- 

 tate. Elytra very convex and subcylindrical, scarcely widened 

 behind ; the entire disk covered with strongly impressed and closely 

 placed punctures, which near the suture are generally divided by 

 longitudinal smooth interspaces, the latter at the other parts of 

 the surface being transversely rugose ; below the shoulders is a 

 slightly depressed space, where the punctuation is much coarser, 

 but towards the apex it becomes very fine and close ; a single row 

 of deep punctures accompanies the extreme lateral margin ; the space 

 immediately in front of the latter is, however, generally smooth and 

 impunctate. An obscure dark broad purplish band extends from 

 the shoulder to the apex, narrowed at the latter place. Underside 

 and legs more or less tinged with fulvous, otherwise violaceous blue. 

 Prosternum deeply longitudinally sulcate. 



Niigata. 



More than 30 specimens of this fine and large species, obtained 

 at one locality only, are before me. The colour of the upper side varies 

 from green to blue and dark violaceous, the purplish band being 

 sometimes very obscure ; the punctuation of the elytra varies also 

 rather much, being in some specimens much more closely placed 

 than in others, and in a single specimen the punctures are much 

 deeper and larger, the inner disk near the suture being almost devoid 

 of punctures ; in most instances, however, the punctuation is very 

 close indeed and for the most part irregularly placed. The maxillary 

 palpi have their apical joint broadly truncate and of very nearly the 

 Bame length and width as the penultimate. 



