1905. ] OF PHYTOPHAGOUS COLEOPTERA. 455 
rather flattened, evenly, closely, and strongly punctured, the basal 
margin very narrowly and five spots on each elytron black: of 
these, one of transverse shape is placed before the middle, two 
obliquely below the middle, and two others near the apical margin ; 
breast and abdomen black, the last segment and the legs testaceous, 
the posterior femora with a black spot at the apex. 
Hab. Brazil. 
Allied to O. nigromaculata Sturm, but differing in the black 
basal elytral margin and the different position of the spots, also 
in the colour of the antenne. 
OEDIONYCHIS PERSIMILIS, sp. n. 
Elongate, testaceous; thorax impunctate, the anterior angles 
mucronate ; scutellum black; elytra not perceptibly punctured, 
with five black small spots on each (1.2.1.1). 
Length 6 millim. 
Head impunctate, the eyes rather widely separated, frontal 
tubercles broadly subquadrate, carina short and rather blunt ; 
antenne scarcely reaching to the middle of the elytra, testaceous, 
the third and following joints nearly equal; thorax more than 
twice as broad as long, the sides rounded, the anterior angles 
slightly produced outwards into a small tooth, the lateral sulci 
deep, the surface impunctate, obsoletely depressed in front of the 
seutellum, the latter black; elytra obscure testaceous, each with 
five small black spots, of which one is placed on the shoulders, two 
before the middle obliquely, the inner one near the suture, the 
fourth spot below the middle near the lateral margin, and the fifth 
below the sutural spot at some distance from the apex; under side 
and legs testaceous, the posterior femora with a black spot at the 
upper edge. 
Hab. Chilpancingo, Mexico. 
Of more elongate shape than QO. 13-maculata, and with five 
spots on each elytron, the spots small and placed rather differently. 
Both specimens before me are of a very dull obscure testaceous 
colour in regard to the elytra, but this may be due to discoloration. 
O. atroguttata Jac., from the same locality, is a closely allied species, 
but it differs in the shape of the thorax, as well as in the position 
of the elytral basal spots and their number. 
OEDIONYCHIS SUBDILATATA, Sp. 0. 
Ovate, medially widened, black; head and antennz piceous; 
thorax pale testaceous or whitish, narrowed anteriorly, impunctate; 
elytra broadly margined, impunctate, testaceous, an obscure trans- 
verse band at the base, with two black spots and another below the 
middle with another larger spot, obscure fulvous. 
Length 6-7 millim. 
Head impunctate, the vertex black or piceous, frontal elevations 
narrowly transverse, eyes rather large; antennz piceous or dark 
fulvous, the third and fourth joints equal; thorax with distinctly 
rounded sides, gradually narrowed anteriorly, the angles rather 
Proc. Zoo. Soc.—1905, Vou. II. No. XXXT. 31 
