286 MR. M. JACOBY ON COLEOPTERA [May 21, 
antennee piceous ; thorax deeply transversely sulcate ; elytra finely 
punctured, an angulate mark at the base and another semilunate 
spot near the apex obscure dark fulvous. 
Var. The elytral markings replaced by spots or streaks (1, 2, 2). 
Length 2-3 lines. 
Head impunetate, with a deep fovea between the antennz, dark 
fulvous, the vertex more or less piceous ; antenne half the length 
of the body, the fifth to the eighth joints piceous, the others fulvous ; 
thorax scarcely one half broader than long, the sides straight at the 
base, the surface impunctate, with a deep transverse somewhat sinuate 
sulcation ; elytra finely punctured, scarcely shining, with traces of 
longitudinal grooves, obscure testaceous, the base with an angular 
piceous mark, extending to one third the length of the elytra, a 
semicrescent similar-coloured mark is placed below the middle ; legs 
and underside fulvous. 
Caracas and San Esteban. 
NV. dimidiaticornis resembles greatly several other species of the 
same genus in colour and the design of the elytra, but is principally 
distinguished by the dark intermediate joints of the antennze and the 
rather less transversely shaped thorax: in the variety the elytra 
have a small spot placed on the shoulder, two before the middle 
placed transversely, and two others below the latter ; these spots are 
sometimes partly connected and indicate the pattern in the specimen 
which I have taken for the type. The appendiculate claws and deeply 
suleate thorax will prevent the species for being mistaken for a 
Diabrotica. 
NEOBROTICA VARIABILIS, Jac. 
Var. Antenne entirely fulvous. 
From Corozal. 
The two specimens contained in this collection agree in every way 
with the Mexican form described by myself in the ‘ Biologia Centrali- 
Americana,’ except in the colour of the antennz, which are fulvous 
as well as the legs. As the species seems, however, to vary in these 
respects, I think that the Venezuelan insects are but another local 
form of the type. Neobrotica is at once distinguished from Diabrotica 
by the transverse sulcation of the thorax, the longer first joint of 
the posterior tarsi, and the appendiculate claws. 
Neosrotica (sub DiaBroTica) OBERTHURI, Baly. 
Corozal. 
Ca@:LOMERA CAYANENSIS, Fabr. 
From San Esteban. 
MALACORHINUS UNDECIMPUNCTATUS, N. Sp. 
Obscure testaceous ; the apical joints of the antennze fuscous ; 
thorax extremely finely punctured ; elytra very.closely and more dis- 
tinctly punctured, with eleven black spots (2, 3, 4, 2). 
Length 2 lines. 
Head impunctate, deeply transversely grooved between the eyes ; 
