1889.] COLLECTED IN VENEZUELA. 275 



frontal elevations distinct ; the clypeus broadly triangular ; the 

 palpi more or less piceous ; antennae 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 slig:htly 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 (iilvous ; the abdomen, the apex of the femora, and the 

 tibiae and tarsi black ; posterior femora but very moderately dilated, 

 the tibiae 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 difiicult 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 tibiae are marked with a small 

 sj)inc, 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 tlie insect is 

 narrowly elongate ; the long first joint of the posterior tarsi 

 separates the species from those composing the genus Haltica 

 {Grai)toderd). 



Aphthona regulata, n. sp. 



Oblong, dark violaceous blue ; the basal joints of the antennae and 

 the anterior legs more or less fulvous ; thorax impunctate ; elytra 

 regularly punctatc-striate. 



Length 1 line. 



Head impunctate ; the frontal elevations transverse, distinct ; 

 carina acute and long ; antennae not extending to half the length of 

 tbe 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 liluish ; 

 tibiae and tarsi more or less fulvous. 



Caracas. 



The lenden-blue colour and the regularly punctate-striate elytra 

 separate A. regulata from its allies. 



HoMOPiicETA ^QUiNOCTiALis, Linn. 



San Esteban, Caracas, Corozal, and Colonia Tovar. 



IIOMOPHCETA VARIABILIS, JaC. 



Sai\ Esteban and Colonia Tovar. 



