NEOBROTICA AND RELATED GENERA — BLAKE 347 



The only recently collected specimen is a male in the Carnegie Museum 

 from Rio de Janeiro. Although lacking the shelf below the antennal 

 sockets of the male that is prominent in the Central American species, 

 and not having so deeply excavated a front as in those, this species 

 appears to be the South American counterpart of E. denticornis and 

 its relatives and fits into the genus very well. 



Eccoptopsis argentinensis, new species 



Figure 99 



From 5.5 to 6.5 mm. in length, broadly oblong oval, shining although 

 alutaceous, the head of the male a little excavated and antennal 

 joints thi'ee and four somewhat swollen and excavated at adjoining 

 ends; prothorax transversely sulcate, elytra feebly costate with 

 geminate-striate punctures between; yellow brown with blue or 

 greenish elytra having a pale margin. 



Head with the interocular space about half the width of the head, 

 in the male the lower front a little excavated with a median spine 

 below the antennal sockets and two short spines on either side, in the 

 female a feeble carina down the front which bulges a little. Antennae 

 in the male with a long basal joint, a short second joint, the third 

 and fourth long and excavated, the remainder slender and subequal, 

 reaching about to the middle of the elytra. In the female the third 

 joint longer than the fourth. Scutellum pale yellow brown. Elytra 

 dark violet blue or greenish %vith a pale margin, alutaceous, faintly 

 costate with geminate-striate punctation in the intervals, the costa 

 on the side being more pronounced in the male, the apex somewhat 

 pinched in. Body beneath with the breast and abdomen brownish, 

 the femora pale except at the apex, the tibiae and tarsi brown, a spine 

 on the hind tibiae; anterior tibiae of the male stout and the first tarsal 

 joint broadly cylindrical as well as long. Anterior coxal cavities 

 open, claws appendiculate. Length 5.5-6.8 mm.; width 3-4 mm. 



Type, male, BMNH, Baly collection, from Entre Rios, Argentina, 

 collected by Camille van Voixem; other specimen from Constancia, 

 collected by H. Clark, January 1857. 



Remarks: This is closely related to E. cyanocosmesa. It is not so 

 distinctly costate and is less densely punctate. 



Eccoptopsis cavifrons (Jacoby) 



Figure 97 



Neobrotica cavifrons Jacoby, in Godman and Salvin, Biologia Central!- Americana, 

 Coleoptera, vol. 6, pt. 1, p. 758, 1887. 



About 5.5 mm. in length, oblong oval, shining, the elytra rather 

 finely and not densely punctate, with lightly raised costae, the head of 

 the male excavate in front, the antennae of male with the third and 



782-220—66 6 



