■400 M. .TACOBY ON NEW SPECIES OF BEETLES. [June 19, 



fourth joint the longest. Thorax narrowly transverse, of eqnal 

 width, the anterior and posterior margins parallel, the sides rounded 

 near the base, slightly constricted in front of the anterior angles, 

 the latter rather acute but not produced ; surface shining, iin- 

 punctate, flavous, witli a few very obsolete depressions when seen in 

 certain lights. Scutellum oblong, its apex rounded, flavous, im- 

 punctate. Elytra not wider at the base than the thorax, dilated 

 gradually towards the middle, with a rather obsolete depression 

 below the shoulders, the entire surface covered with fine punctures, 

 rather closely placed ; of an obscure dark violaceous blue, the lateral 

 margins, apex, and the last third of the suture flavous, at tlie latter 

 place this colour extends upwards in a pointed shape. Underside 

 and legs flavous. 



This species, of which two specimens are contained in my col- 

 lection, is easily distinguished from O. Ihnbata, Blanch., by the 

 colour of the posterior part of the suture and by that of the antennae. 

 The elytra are also less closely and strongly punctured in the present 

 insect. 



There is a curious structural difference to be found in many 

 species of the present genus, in regard to the elytral epipleurse, which 

 in most of the smaller species are broad and concave at the base, 

 but disappear gradually towards the latter half of the elytra ; in 

 many large-sized species, however, as in O. lO-punctata, Billb., 

 O. l2-maculata, Clark, &c., the elytra might almost be called 

 simple, as the inner margin of their epipleurse is put so far back near 

 the sides of the body that it can be seen only when the insect is 

 held in a certain position. This character may perhaps be of some 

 use in a future monograph of the many and closely allied species. 



2. OiDES AFFiNis, sp. nov. (Plate XLV. fig. 4.) 



Broadly ovate, obscure fulvous ; terminal joints of the antennfe, 

 abdomen, tarsi, and a longitudinal broad band at each elytron black. 



Length 3-4^ Hues. 



Hab. Neilgherries, South India. 



Head scarcely swollen, impunctate with the exception of a few 

 punctures in front of the eyes, transversely grooved between the 

 latter ; the frontal tubercles very distinct and almost contiguous. 

 Antennae longer than half the length of the body in the male, the 

 third joint a little longer than the second, fourth joint distinctly 

 longer than the third ; the four lower joints fulvous, tlie rest black. 

 Thorax not more than twice as broad as long, the sides evenly 

 rounded, surface rather convex, extremely minutely punctured. 

 Scutellum trigonate. Elytra convex, widened at the middle, very 

 distinctly and closely punctured, the interstices finely wrinkled ; a 

 broad black band extends from below the base to near tlie apex, 

 without, however, touching any of the margins. Underside and 

 legs obscure fulvous. Abdomen and tar-ii black. 



Collection Jacoby. 



In colour this species resembles greatly O. dorso-signatum, Clark, 

 from Australia. 



