South American sj^ecies of Diabrotica. 19 



sinuate behind the middle, upper surface moderately convex, 

 impressed with three shallow foveas, placed transversely across the 

 disk. Elytra subelongate, slightly dilated posteriorly, convex, 

 slightly plicate below the humeral callus, distinctly and rather 

 closely punctured. 



The above insect, of which I only know a single speci- 

 men, somewhat resembles in coloration D. elegans. 



Spec. 26. Diabrotica octo-pustidata. 



Subelongato-oblonga, postice pauUo ampliata, convexa, flava, 

 viridi tincta, nitida, scutello, thorace capiteque prasmis, antennis 

 piceis aut nigro-piceis articulis subapicalibus duobus albidis ; 

 thorace longitudine pauUo latiori, convexo ; elytris sat crebre 

 punctatis, castaneis, limbo externo prasino ; utroque pustulis 

 quatuor, longitudinaliter positis albido-flavis. 



Var. A. Elytris viridi-flavis, utroque vitta lata discoidali 

 castanea. Diabrotica latevittata, Baly, Trans. Ent. Soc. Lond., 

 1886, p. 444. 



Long. 3 lin. 



Hah. Upper Amazons {Garfell). My collection. 



Anteuuse filiform, equal to the body in length, the second and 

 third. joints very short, nearly equal, the fourth nearly equal in 

 length to the three lower ones united ; piceous or nigro-piceous, 

 the three basaljoints paler than the rest, the ninth and tenth white. 

 Thorax rather broader than long ; sides sinuate and nearly parallel 

 from the base to beyond the middle, thence obliquely converging to 

 the apex ; above convex, sparingly impressed with very minute punc- 

 tures. Elytra oblong, slightly dilated posteriorly, convex, rather 

 closely and distinctly punctured ; castaneous, the outer limb 

 broadly edged with pale grassy green ; each elytron with four 

 large round pale yellow pustules, placed longitudinally on the 

 inner disk, one at the base, one before the middle, a third below 

 the latter, lastly one subapical and confluent with the outer 

 limb. 



This species was originally described by me in 1886 ; 

 the name then given (latevittata) does not apply to the 

 ordinary pattern of the elytra. I have therefore changed 

 it to the one given above. 



Spec. 27. Diabrotica rugidipennis. 

 Svibelongato-ovata, postice ampliata, convexa, flava, nitida, 

 thorace rufo, pectore, pedibus, scutello capiteque uigris, antennis 



c 2 



