i56 SYSTENA BIFASCIATA. 



and fourth elongate , equal ; thorax twice as broad as long, 

 the sides nearly straight, the basal groove distinct, the 

 surface finely and rather closely punctured ; elytra very 

 closely and distinctly punctured, the suture and a longi- 

 tudinal stripe at the sides , not extending to the apex , 

 piceous; underside and legs testaceous, the posterior fe- 

 mora with an obscure fuscous spot near the apex. 



This species seems closely allied to S. marginalis Illig. 

 but differs in the shape of the thorax, which in Illiger's 

 species is described as » scarcely broader than long", and 

 in the black or fuscous suture of the elytra. 



Diabrotica brasiliensis, n. sp. 



Black; head, thorax and femora flavous; thorax bifoveo- 

 late ; elytra bright metallic green , closely punctured. — 

 Length 2 lines. 



Head impunctate , flavous , the labrum (in one specimen) 

 black; antenna two thirds the length of the body, black, 

 the basal joint testaceous below, the third joint twice as 

 long as the second , but shorter than the following joints ; 

 thorax twice as broad as long, the margins nearly straight, 

 the surface deeply transversely sulcate , impunctate ; scutel- 

 lum black ; elytra bright green , closely and finely punc- 

 tured , the interstices slightly rugose ; tibiae and tarsi as 

 well as the underside black; femora flavous. 



Luperodes hrasiliensis^ n. sp. 



Oblong-ovate , black ; the terminal joint of the antennae 

 yellowish ; thorax yellowish-white , with a large black spot ; 

 elytra minutely granulate , pale flavous , the sutural and 

 lateral margin and a longitudinal stripe at the sides of 

 each , black ; posterior femora whitish at the base. — 

 Length 3 lines. 



var. a. Thorax without black spot. 



var. b. Thorax and elytra black, the latter with a sub- 

 Notes from thie Leydeu Museum , Vol. X. 



