Mr. J. S. Baly on new Species of Phytophagous Beetles. 27 



incrassate, their outer half black. Thorax rounded on the sides, 

 narrowed in front. Elytra distinctly punctured, the puncturing 

 varying in depth in different individuals, indistinctly arranged 

 in irregular rows. 



Genus Gonioctena, Redt. 

 Gonioctena scutellaris. 



G. oblonga, modice convexa, fulva, nitida, pectore pedibusque (fe- 

 moribus quatuor anticis basi exceptis) nigro-piceis ; antennis ex- 

 trorsum scutelloque nigris ; elytris regulariter punctato-striatis. 



Long. 3 lin. 



Hah. Northern China. 



Oblong, convex. Head coarsely punctured ; epistome de- 

 pressed, separated from the face by an angular groove, from the 

 apex of which a short, ill-defined, longitudinal depression runs 

 upwards on the face; antennse scarcely longer than the head 

 and thorax, their outer two-thirds black. Thorax more than 

 twice as broad as long; sides angustate-rotundate from base 

 to apex; disk distinctly but finely punctured, sides coarsely 

 punctate. Scutellum nearly semirotundate, shining black. Ely- 

 tra scarcely broader than the base of the thorax, sides below the 

 shoulders slightly excavated ; -each elytron impressed with eleven 

 regular rows of punctures, the first short; interspaces plane, 

 minutely but not closely punctured. Body beneath deeply 

 punctured ; abdomen obscure fulvous, its puncturing subremote. 



Gonioctena thoracica. 



G. oblonga, convexa, nigra, nitida, tborace facieque inferiore obscure 

 rufis ; antennarum basi fulva ; elytris regulariter punctato-striatis. 

 Long. 2 1 lin. 



Hah. Northern China. 



Very similar to the preceding, but (with the exception of the 

 entire thorax above, together with its sides beneath, the lower 

 portion of the face, and the base of the antennse) entirely black. 

 Head less coarsely punctured ; the longitudinal depression on 

 the face is wanting, but replaced by two indistinct grooves, 

 which run one on either side obliquely upwards from the apex 

 of the epistome; antennas thicker towards their apex than in 

 G. scutellaris. 



Gonioctena ceneipennis. 



G. oblonga, convexa, testacea, nitida ; elytris viridi-metallicis, punc- 

 tato-striatis, punctis in striis ad latera minus regulariter dispositis; 

 antennis flavis ; scutello nigro. 



Long. 2| lin. 



Hah. Northern China. 



