1889. j COLLECTED IN VENEZUELA. 275 
frontal elevations distinct; the clypeus broadly triangular; the 
palpi more or less piceous ; antennze extending below the middle of 
the elytra, black (the basal two joints sometimes obscure fulvous), 
the fourth joint distinctly longer than the third ; thorax subquadrate, 
the sides widened before the middle, rather suddenly narrowed in 
front, the anterior angles slightly produced outwards, the surface 
impunctate, shining, reddish fulvous with a very obsolete transverse 
depression near the basal margin, the latter straight; scutellum 
fulvous ; elytra somewhat depressed along the base at the suture, 
metallic dark blue, very closely and finely punctured; the breast 
and legs fulvous ; the abdomen, the apex of the femora, and the 
tibize and tarsi black ; posterior femora but very moderately dilated, 
the tibize with a small spine, the first joint of the posterior tarsi 
longer than the three following joints together ; claws appendiculate ; 
anterior coxal cavities open. 
San Esteban. 
It is difficult to point out the exact place of this insect, which I 
have only provisionally placed in Cacoscelis; it is probably the 
representative of a new genus, should other species with similar 
structural characters be found; the thorax is nearly quadrate, not 
transverse as in Cacoscelis; all the tibize are marked with a small 
spine, and the metatarsus of the posterior legs is also much longer 
than in the typical forms of the genus; the posterior femora are 
but moderately dilated and the general shape of the insect is 
narrowly elongate ; the long first joint of the posterior tarsi 
separates the species from those composing the genus Haltica 
(Graptodera). ) 
APHTHONA REGULATA, 0. sp. 
Oblong, dark violaceous blue ; the basal joints of the antennze and 
the anterior legs more or less fulvous; thorax impunctate; elytra 
regularly punctate-striate. 
Length 1 line. 
Head impunctate; the frontal elevations transverse, distinct ; 
carina acute and long; antenne not extending to half the length of 
the elytra, black, the four basal joints fulvous, the second and third 
joints equal; thorax about one half broader than long, the sides 
nearly straight, the anterior angles oblique, forming a tooth before 
the middle, the surface impunctate ; elytra rather closely, finely, and 
regularly punctate-striate ; below piceous; posterior femora bluish ; 
tibize and tarsi more or !ess fulvous. 
Caracas. 
The leaden-blue colour and the regularly punctate-striate elytra 
separate A, regulata from its allies. 
Homopua@ra £QUINOCTIALIS, Linn. 
San Esteban, Caracas, Corozal, and Colonia Tovar. 
HoMOPuH@TA VARIABILIS, Jac. 
San Esteban and Colonia Tovar. 
