522 ARKIV FÖR ZOOLOGI. BAND 1. 



humeral and sutural spöt, the latter surrounding the scu- 

 tellum, two spöts placed transversely at the middle, two 

 others below the latter and a spöt near the apex, black; 

 under side flavous, the sides of the breast and the coxee of 

 the posterior legs with a black streak, femora flavous with 

 a black spöt, the tibi&e above and the tarsi entirely black. 



Hab. Quinta, Argentine. 



Closely allied in pattern and coloration to B. significata 

 GrAH. and several other species but differing in the sulcate 

 and spotted thorax also in the colour of the under surface 

 and legs; four specimens are before me. 



Diabrotiea significata GrAHAN. 

 Several specimens from Quinta, Argent. Rep. 



Diabrotiea speciosa Germ. 



A common and widely distributed species; many speci- 

 mens from Quinta also Bolivia. 



Iiochmaea tropica Jac. 



Påle fuscous, the antennre black, the head with one, the 

 "thorax with three black spöts, elytra finely transversely 

 rugose and closely pnnctured, the disc with two narrow 

 longitudinal, raised, påle lines, the lateral margins costate, 

 legs dark. 



Length 6 — 6 V 2 mill. 



Head very finely rugose, obscure testaceous, the entire 

 middle portion of the vertex occupied by a large blackish 

 spöt, trontal elevations strongly raised, oblique, shining, pi- 

 ceous, clypeus påle testaceous, labrum and palpi black, an- 

 tenn cie not extending to the middle of the elytra, the joints 

 short, black, the extreme base of the second and third joint 

 flavous, the latter and the following joints very nearly of 

 equal length, thorax transverse, with a broad depression at 

 the sides and another more obscure one at the middle, the 

 anterior ,and the lateral margins thickened, the latter rather 

 strongly rounded at the middle, posterior angles oblique, the 

 disc finely rugose, clothed with extremely short pubescence, 

 here and there, the sides and the middle with an obscure 



