42G MR. MARTIN JACOBY ON NEW SPECIES [ISTov. 28, 



joints more or less flavous below, the third joint distinctly shorter 

 than the fourth; thorax with the sides broadly flattened, the 

 anterior angles pointed but not produced, the disc impunctate, 

 testaceous, the lateral margins feebly rounded anterioi'ly ; scu- 

 tellum black ; elytra convex, without basal depressions, with 

 narrow reflexed margins, closely and very finely punctured, tes- 

 taceous; under side and legs black, the abdomen more or less 

 flavous at each side. 



Hah. Peru. 



Very closely allied to 0. pleheja Klug, but in that species the 

 head is punctured at the vertex and the eyes are margined with 

 testaceous, the elytra are more strongly punctured, and the 

 " habitat " of the species is Brazil. I have preserved Clark's 

 catalogue name for the present species, of which specimens are 

 also contained in the British Museum. 0. obscuripennis Ja,c., also 

 from Peru, is likewise veiy closely allied, but is a smaller insect, 

 of different shape, with the anterior angles of the thorax mucro- 

 nate and a much more flattened cai-ina of the clypeus. 



Oebionychis nigrimana, sp. n. 



Black ; thorax short and strongly transverse, impunctate ; 

 elyti'a finely punctured, pale greyish-testaceous. 



Length 5 millim. 



Of medially gradually widened shape, moderately convex ; the 

 head entirely impunctate, black, the frontal elevations transverse, 

 contiguous, carina acute, convex ; antennfe black, the third and 

 fourth joints equal (the rest wanting) ; thorax short, of equal 

 width, more than twice as broad as long, the lateral margins 

 rounded, the sides broadly flattened, the anterior angles neither 

 thickened nor produced, the surface impunctate, black, very 

 shining ; scutellum black ; elytra gradually widened towards the 

 middle, finely and closely punctured, pale greyish-testaceous, 

 below and the legs black; metatarsus moderately short, claw- joint 

 very strongly inflated ; prosternum proportionately broad. 



Hab. Peru. 



Of similar coloration to 0. tvrpis Jac, but much smaller, the 

 head and thorax entirely black and the elytra without apical 

 black spot, 



Oedionychis albipennis Jac, 



Since this species was described (P. Z. S. 1894, p. 609) I have 

 received a good many more specimens from the Amazon regions, 

 which prove that the insect is extremely variable in regard to size 

 as well as to coloration. The type was described from nearly 

 unicolorous specimens ; those now before me show the following 

 elytral markings :— 



a. Two spots at the basal margin ; a longitudinal streak near 

 the side, very broad at its commencement, strongly pointed 

 at the apex. 



