South American species of Diahrotica. 23 



linear concolorous fasciae, one extending from the outer margin to 

 the anterior obhque hue, the other, placed just below the middle, 

 extending from the suture to the outer limb. 



Spec. 33. Diahrotica tarsalis, Harold. 

 Ent., Hefte xiii., 1875, p. 92. 



Ovata, postice ampliata, nigra, nitida, thoracis limbo elytro- 

 rumque limbo externo, sutura, antice abbreviata lineisque trans- 

 versis vel maculis irregularibus, flavis. 



Var. A. Elytris flavis, maculis irregulai'ibus nigris. 



Long. 2 lin. 



Hah. Colombia, Bogota, Magdalena Kiver. My 

 collection. 



Head triangular, not longer than broad ; longitudinal ridge on 

 clypeus ill-defined ; antennae liliform, three-fourths of the body in 

 length, the second joint short, the third nearly one-half longer, the 

 fourth longer than the preceding two united, two or three of the 

 basal joints piceous beneath, the rest entirely black. Thorax nearly 

 two-thirds broader than long ; sides moderately rounded, nearly 

 straight and parallel posteriorly ; disk convex, obsoletely foveolate 

 on either side. Elytra rather broadly ovate, slightly dilated pos- 

 teriorly, convex, disk impressed with faint longitudinal sulcations. 



The present insect varies greatly in coloration ; in 

 the typical form the elytra are black, with the sutural 

 and outer margins, together with several obliquely trans- 

 verse lines on the disk, fiavous ; in some specimens the 

 black colour gradually disappears until they may be 

 described as fiavous, with irregular black markings. 



Spec. 34. Diahrotica clistincta. Jacoby. 



Cist. Ent., iii., p. 46. 



Subelongato-ovata, postice pauUo ampliata, convexa, flava aut 

 viridi-flava, nitida, pectore pedibusque, femoribus exceptis, nigro- 

 piceis, scutello capiteque nigris, antennis piceis, ad basin pallidis, 

 anteapicem sordide albidis ; thorace Isevi ; elytris tenuissime punc- 

 tatis, ad latera non phcatis, utroque linea suturali, plaga oblonga 

 a basi ad ultra medium extensa, intus angulatim emarginata altera- 

 que transversa pone medium, piceis aut nigro-piceis. 



Long. 2 lin. 



Hah. Amazons [Bates). Coll. Jacoby itijpc) and Baly. 



Head not longer than broad; clypeal ridge rather strongly 

 raised, well-defined ; antennae filiform, nearly equal to the body 



