South American species of Diahrotica. 53 



Spec. 93. Diahrotica Westwoodi. 



Ent. Month. Mag., xxv., 252. 



Anguste ovata, postice paullo ampliata, convexa, flava, nitida, 

 pectore, scutello, labro antennisque nigris, his ad basin piceis, articu- 

 lis externis tribus, ultimi apice excepto, albidis ; thorace convexo, 

 dorso obsolete deplanato, ad basin fovea obsoleta impresso ; elytris 

 subcrebre, tenuiter punctatis, ad latera plicatis ; utroque linea 

 suturali, a basi fere ad medium extensa, vitta humerali brevi, macu- 

 laque oblonga submarginali, nigris. 



Long, 3^ lin. 



Hah. Amazons (Bates). My collection. 



Head triangular, scarcely longer than broad ; clypeus with an 

 ill-defined longitudinal ridge ; antennae nearly equal to the body in 

 length, filiform, the second and third joints very short, nearly 

 equal, the fourth longer than the preceding two imited ; black, the 

 three lower joints pale piceous, stained above with black ; the three 

 upper ones yellowish white, the apex of the eleventh black. 

 Thorax one-half broader than long; sides sinuate behind the 

 middle, very slightly dilated and rounded anteriorly ; upper surface 

 convex, the hinder two-thirds of the disk obsoletely flattened, 

 impressed at its base with a faint fovea. Elytra narrowly oblong- 

 ovate, slightly dilated posteriorly, obtusely rounded conjointly at 

 the apices; convex, slightly flattened along the suture, finely punc- 

 tured, plicate below the humeral calhis, the subhumeral ridge dis- 

 tinctly elevated and extending to just beyond the middle of the 

 elytron. 



Spec. 94. Diahrotica Weisei. 



Ovata, postice ampliata, convexa, flava, nitida, pectore, scutello 

 antennisque nigris, his ad basin piceo-fulvis, articulis penultimis 

 duobus albidis ; thorace convexo, rufo-testaceo; elytris convexis, ad 

 latera plicatis, sat crebre punctatis, utroque linea brevi basali com- 

 muni vittaque brevi humerali, nigris. 



Long. 3^ lin. 



Hah. Brazil, St. Catharine. My collection. 



Head not longer than broad, labrum piceous ; clypeal ridge 

 rather broad, well-defined ; antennae nearly equal to the body in 

 length, filiform, the second joint short, the third rather longer, the 

 fourth longer than the preceding two united ; the three lower 

 joints piceo-fulvous, the tenth and eleventh white, the rest black. 

 Thorax nearly one-third broader than long ; sides parallel and 

 distinctly sinuate posteriorly, rounded and converging towards the 



