OCR Text |
Show 454 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, Var. Thorax without spots; elytra greenish-black, the sides and apex rather broadly fulvous. Length 6 millim. Of rather short, broadly ovate and convex shape, the head with a few punctures near the eyes, the latter large, each as wide as the intermediate space, the vertex piceous, lower portion fulvous, frontal tubercles narrowly transverse ; antennae extending to the middle of the elytra, fulvous, the third and fourth joints very nearly equal, following joints rather stout and not longer than the fourth ; thorax more than twice as broad as long, of equal width, the sides rounded anteriorly, straight at the base, anterior angles prominent with a small tootli, lateral sulci deep and broad, the surface impunctate, fulvous, with a short transverse black band or spot at each side ; elytra narrowly margined, rather strongly punctured, fulvous, each with ten black spots, of which three are placed transversely at the base, three below these before the middle, two larger ones nearly connected below the middle, and two others well separated near the apex, there is also another obscure spot placed at the apex on the suture; under side and legs dark fulvous ; metatarsus of posterior legs very short, claw-joint strongly swollen. Hab. Bolivia. I cannot identify this species with 0. fenestrata Har., to which it is no doubt closely allied. Yon Harold, who gives no details in regard to the shape of the thorax, describes his species as having black antennae and under side, as well as similarly coloured legs and the elytra with 9 spots only; the thorax also is said to have a single band, not two spots, and the third joint of the antennae to be distinctly shorter than the fourth: none of these details applies to the present insect. The variety, which at first sight entirely differs in coloration, agrees in every structural detail and also in the colour of the antennae and under side ; there is also a widening of the fulvous band at the sides corresponding with the fulvous space which separates the spots as in the type, and the greenish-black colour likewise is the same in the spotted form, although which of the two may be looked upon as the type is optional. O e d io n y ch is d u od ecimno tata (Clark, MS.), sp. n. (Plate XIY. fig. 1 1 .) Testaceous, the terminal joints of the antennae black; the head and thorax with two black spots, closely punctured ; elytra very closely and strongly punctured, the basal margin and five spots on each elytron black ; under side black, legs testaceous. Length 10 millim. Head with a few deep punctures, flavous, shining, the vertex with two black spots, frontal tubercles bounded behind by a deep groove, labrum black; antennae slender, testaceous, the terminal six joints black; thorax with strongly produced anterior angles, the lateral margins feebly rounded, the disc broadly flattened at the sides, closely and distinctly punctured , testaceous, with a large black spot at each side; scutellum black; elytra very broad and |