1877.] MR. M. JACOBY ON NEW COLEOPTERA. 515 



a distinct, short, longitudinal middle groove, strongly punctate, lon- 

 gitudinally rugose near the eyes, violet-blue ; epistome wedge-shaped, 

 separated from the front, with the anterior margin emarginate, 

 strongly punctured, and covered with short whitish pubescence ; 

 labrum, mandibulae, and the last joints of the palpi black, the first 

 two joints testaceous, antennae with the seventh joint the longest, 

 the first much thickened and nearly globular, the second less than 

 half the length of the third, the last joints elongate and almost 

 cylindrical ; the first five joints are of a greenish black colour and 

 shining, while the rest is very lighi flavous and strongly covered 

 with whitish hair ; thorax with the sides obliquely deflexed in front 

 and converging from the base to the apex, with the anterior angles 

 produced into a short tooth, and the extreme lateral margins slightly 

 waved, posterior margin transversely grooved through its entire 

 length, above subcylindrical, covered with crowded large punctures 

 near the base, more finely near the apex, shining greenish violet ; 

 scutellum with the apex broadly rounded, scarcely longer than 

 broad, impunctate ; elytra broader than the thorax, parallel, slightly 

 narrower towards their apex, extremely closely and transversely ru- 

 gose, strongly punctured near the base, and longitudinally costate 

 near the extreme apex and the suture at its extremity, of a uniform 

 violet-blue, with a greenish reflection ; underside obscure metallic 

 blue finely punctate ; legs of the same colour, tarsi light brownish, 

 covered with yellowish pubescence. 



Length 4 lines. 



Hab. Borneo. 



Collection Jacoby. 



Chrysomelid^. 



Genus Doryphora, lUig. 



10. Doryphora bicolor, sp. nov. 



Ovate, convex, piceous above, shining ; head black, opaque, very 

 remotely and finely punctate, labrum fulvous ; antennae black, with 

 the first two joints beneath testaceous ; thorax black, moderately 

 convex, the lateral margins parallel at the base till about the middle, 

 from there moderately rounded to the apex, the anterior angles not 

 much produced, surface distinctly and not closely punctate, the 

 punctuation much stronger than the head, but not stronger near 

 the sides than on the disk ; scutellum triangular, impunctate. 

 Elytra a little wider at the base than the thorax, regularly rounded 

 towards the apex, punctate- striate, the striae arranged in double 

 rows, which are now and then, especially towards the sides, a little 

 irregular, of a dark piceous colour ; a narrow flavous band extends 

 from across the base of each elytron along the lateral margins (leaving, 

 however, a small border of the ground-colour) to the apex, and, 

 after running upwards close to the suture to the middle of the elytra, 

 is connected by another transverse band of the same size and colour 

 with the lateral one. Body beneath and legs shining black, the 

 mesosternal process rather long and slightly curved. 



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