432 MR. MARTIN JACOBY ON NEW SPECIES [ Nov. 28, 
Elytra blue or black, without markings. 
OEDIONYCHIS SUBCOSTATA, Sp. nN. 
Metallic blue, the head and thorax reddish-fulvous, the latter 
finely punctate; elytra dark blue, rather opaque, closely and 
strongly rugose-punctate, with a single, very obsolete costa near 
the sides. 
Length 7 millim. 
Head impunctate, reddish-fulvous ; frontal elevations strongly 
raised, transverse, carina linear, very convex; antenne with the 
lower two joints fulvous, the following four black, the rest wanting, 
third joint shorter than the fourth ; thorax transversely convex, 
about twice as broad as long, the sides broadly flattened, rounded 
in front, the anterior angles produced outwards into a small 
tooth, the dise with a rather distinct transverse groove near the 
base, minutely punctured when seen under a strong lens; scutel- 
lum black; elytra dark blue, rugosely punctured throughout, a 
slightly raised narrow line extends from within the shoulders to 
below the middle; under side and legs dark metallic blue, smooth 
and shining. 
Hab. Brazil. 
OEDIONYCHIS MOTSCHULSKYT, Sp. Nn. 
Head at the vertex, the antenne (the apical joints excepted), 
the under side, and the tibiz and tarsi black; thorax and femora 
flavous; elytra metallic violaceous, finely and closely punctured. 
Length 5 millim. 
Head e tirely impunctate, black, shining; the eyes widely 
separated ; frontal elevations transverse, very strongly raised ; 
clypeus triangular, flavous as well as the labrum ; antenne slender, 
extending to the middle of the elytra, black, the apical three joints 
fulvous, third and fourth joints equal; thorax nearly three times 
broader than long, flavous, the sides rounded, deeply sulcate, the 
anterior angles very shghtly produced outwards into a blunt tooth, 
the surface entirely impunctate, obsoletely transversely sulcate 
near the base; scutellum black; elytra with a feeble impression 
below the base, convex, nearly parallel, very narrowly margined, 
finely and very closely punctured, metallic violaceous blue; legs 
flavous, the breast, abdomen, the apex of the posterior femora, and 
the tibie and tarsi black. 
Hab. Peru. 
The colour of the head, antenne, and legs, and the rather narrow 
parallel shape of this species separate it from those of nearly 
similar coloration. 
OEDIONYCHIS INDIGOSOMA, sp. n. 
Head and thorax fulvous, nearly impunctate; elytra dark blue, 
closely and strongly semirugose punctate; below and the legs 
bluish black. 
Length 7 millim. 
