200 MR. MARTIN JACOBY ON NEW SPECIES [Mar. 4, 



narrowly emarginate, the anterior angles obtuse, posterior angles 

 distinct, the base with a narrow transverse sulcus, the disc 

 scarcely perceptibly punctured and wrinkled, black, all the margins 

 narrowly flavous ; scutellum black ; elytra sculptured like the 

 thorax, the fine punctures closely placed, the ground-colour 

 flavous or testaceous, a rather broad longitudinal stripe near the 

 suture, and another narrower one near the lateral margins, both 

 abbreviated behind, black. 



Hah. Puebla, Mexico. 



Of this species, which seems to be very rare, as I did not meet 

 with it in the numerous collections I had before me when working 

 out the Central American fauna, I have two exactly similar 

 specimens now : they differ from the other species in the black 

 thoracic band, the two posteriorly abbreviated elytral stripes, and 

 the black underside ; of the stripes, the subsutural one is of the 

 same width as that of the following flavous space, but the lateral 

 one is narrower. D. discicoUis Clark has a black head, differently 

 coloured legs and elytra, the latter are black with a discoidal 

 flavous stripe. 



OXYGONA BRASILIENSIS, Sp. n. 



Testaceous or pale flavous, the antennse piceous ; thorax im- 

 punctate, not strongly transverse, the angles acute ; elytra finely 

 and closely punctured. 



Length 6 millim. 



Head broad, impunctate, without any fovese, the frontal 

 elevations strongly raised ; the clypeus triangular ; the antennse 

 piceous or fuscous, nearly extending to the end of the elytra, 

 the third and following joints elongate, equal, terminal Joints 

 shorter ; thorax not much more than one-half broader than long, 

 the sides rather strongly rounded anteriorly, all the angles acute, 

 the anterior ones slightly oblique but scarcely produced, the surface 

 smooth and shining, with a narrow margin at all the sides ; scu- 

 tellum more or less fuscous ; elytra extremely closely and rather 

 finely punctured, the apex nearly impunctate ; below and the legs 

 testaceous, the metatarsus of the posterior legs elongate, the pro- 

 sternum extremely narrow, the last abdominal segment of the 

 male triangularly emarginate at the apex, with a narrow central 

 groove. 



Hab. Espirito Santo, Brazil. 



I must separate this species from 0. acutangula Chev., on 

 account of the much longer and much less transversely shaped 

 thorax, which is very obvious when the two insects are compared 

 in both sexes. 0. luridulus CI. and 0. simplex CI. have both 

 flavous antennse ; the former has also a medial fovea on the head, 

 but what Clark meant by a short, deep, and broad medial marking 

 on the head, of which he says nothing in his description, it is 

 difficult to understand. Two specimens of the present species are 

 in my collection. 



