1904. J AMERICAN PHYTOPHAGOUS COLEt)PTERA. 409 



to the apex, a stiipe, widened medially, near the lateral margins 

 and likewise abbreviated posteriorly, black, this stripe connected 

 at its apex with an elongate spot, foi-ming a hook, another small 

 black spot is placed near the scutellum ; under side and legs 

 testaceous. 



Hah. Prov. Tucuman, Argentine Rep. {C. Bruch). 



Of different elytral marking than any other species of the genus 

 desci-ibed. In the collection of the La Plata Museum and my own. 



Systexa axtexxata, sp. n. 



Flavous, the apical joints of the antennae black ; thorax impunc- 

 tate ; elytra fulvous, extremely minutely punctui'ed. 



2Ias. Antenna? robust, the basal joint strongly thickened, deeply 

 concave above. Fern. Antenna^ of normal shape. 



Length 5 millim. 



Mas. Head impunctate, with a short central groove, the frontal 

 elevations flat and broad, caiina linear ; antennfe stout, the lower 

 six joints flavous, the others black, basal joint short and very thick, 

 deeply hollowed out at the apex, the latter produced into a point, 

 second joint short, third one-half longer, the following joints 

 more elongate ; thorax neai-ly twice as broad as long, the sides 

 rounded, the disc veiy obsoletely transversely sulcate near the base ; 

 elytra, wider at the base than the thorax, reddish-fulvous, extremely 

 minutely punctured, their epipleurse broad and distinct to the 

 apex ; under side and legs flavous, posterior femora rather strongly 

 incrassate, their tibia? wdth a short spine ; metatarsus as long as 

 the following joints together-, claws appendiculate ; presternum 

 veiy nai-row, the cotyloid cavities closed. 



Hah. Amazons. 



The sti'ucture of the antennte in the male diftei's from that of 

 any other species known to me ; in the female, however, the basal 

 joint is long and slender and the following two joints are both 

 short and equal and of flavous colour only, all the others being' 

 black : no other differences of importance are present. 



PSEUDOGOXA DISCOIDALIS, Sp. n. 



Fulvous ; the antenna?, the apex of the posterior tibia?, and the 

 tarsi black ; thorax impunctate ; elytra parallel, impunctate, black, 

 a sutural band, transversely widened before the middle and near 

 the apex, flavous. 



Length 4 millim. 



Head impunctate, fulvous, with a deep fovea between the eyes, 

 base of the clypeus very broad between the antenna? ; eyes large 

 and round ; labrum and palpi piceous, the latter slender ; antennae 

 filiform, black, the basal joint more or less fulvous, fourth and 

 following joints slightly triangularly widened, not longer than the 

 third joint which is more slender, terminal joint extending to the 

 middle of the elytra ; thorax abou:t one-half broader than long, 

 the lateral margins slightly rounded at the middle and constricted 

 at the base, the anterior angles obtuse ; the disc transversely 



