92t) MR. M. JACOBY ON NEW [DeC. 1, 



the lateral and sutural margin, a spot at the shoukler, another below 

 the base, and three placed transversely below the middle, dark brown. 



Length 7 lines. 



Head closely and finely punctured, the anterior margin of the 

 labrum fulvous ; antennae extending to the base of the thorax, the 

 seven lower joints piceous and shining, the four terminal ones and 

 the sides of the two preceding fulvous, the apical joints slightly 

 longer than broad. Thorax nearly three times as broad as long, 

 the sides nearly straight at the base, rounded towards the apex, the 

 anterior angles acute ; surface punctured like tlie head, but the 

 punctures more remotely placed. Scutellum impunctate, piceous. 

 Elytra closely and finely punctured, the punctuation arranged in 

 irregular double and treble lines, and surrounded by a ring of darker 

 green than that of the ground-colour, the sutural and lateral mai"- 

 gins narrowly piceous, this colour widened below the base at the 

 suture into a triangular-shaped broad spot ; a similarly coloured 

 small spot is placed at the sides and close to the latter, another one 

 at the shoulder, and three placed transversely below the middle at 

 the disk of each elytron ; mesosternal process short and stout. 



Hab. Amazons, St. Paulo d'01iven9a. (Coll. Oberthiir and my 

 own.) 



In the pattern of the elytra D. gratiosa resembles D. imperialis, 

 Stal, and B. hybrida, Jac, but differs entirely in its coloration and 

 the fulvous apical joints of the antennse. 



DORYPHORA OBERTHURI, Sp. nOV. 



Below greenish black ; above metallic blue. Thorax dilated at 

 the sides, wider than the elytra, remotely punctured ; elytra closely 

 and semiregularly punctate-striate. 



Length 8 lines. 



Head finely and rather closely punctured, metallic green or blue ; 

 the anterior margin of the labrum and the jaws covered with long 

 yellowish hairs; antennae not extending much further than the 

 base of the elytra, the first six joints metallic blue, the rest black. 

 Thorax wider than the elytra, the sides very greatly rounded and 

 widened towards the base, the posterior margin produced tovvards 

 the middle ; surface covered with larger and smaller [junctures, 

 irregularly and not very closly placed, the dilated sides entirely 

 impunctate, the lateral margin accompanied by a single row of deep 

 punctures. Scutellum about as l)road as long, impunctate. Elytra 

 very convex and parallel, narrower at the base than the thorax, the 

 disk rather closely punctate-striate, the punctures, however, not very 

 regularly placed and greatly diminishing in size towards the apices ; 

 the interstices impunctate, here and there aciculate ; the breast 

 black ; the abdomen and legs metallic green ; the mesosternal 

 process rather short, but slightly curved and ending in a slightly 

 thickened point. 



Hab. Amazons, St. Paulo d'Oliveucja. (Coll. R. Oberthiir and 

 Jacoby.) 



Allied to B. dilaticollis and B. euchalca, StJil ; but distinguished 

 bv the extremely rounded, not angulate, sides of the thorax, and by 



