1880.] MR. M. JACOBV ON PHYTOPHAGOUS COLEOPTERA. 603 



much widened posteriorly, very finely punctate, the anterior por- 

 tion to nearly the middle flavous, the rest, as well as the abdomen, 

 bluish or greenish black. 



Also found on the banks of the Napo. 



73. DiABROTicA DisuoiDALis, Baly. 



The specimens collected by Mr. Buckley agree very nearly with 

 Dr. Baly's description, but show the following differences : — The 

 broad transverse band of the elytra is light green instead of flavous ; 

 the entire elytral margin and the apex are also of the former colour, 

 which Baly does not mention; the black parts of the elytra are con- 

 nected laterally by a narrow line. Not having the type to compare, 

 I am unable to say whether my insects are specifically different. 



An almost similarly coloured species is the foUowmg : — 



74. DiABROTICA TRANSLUCIDA, Sp. UOV. 



Light-green ; head, breast, and legs black ; elytra finely punctate, 

 a transverse band at the base, and another broader one near the 

 apex, black. 



Length 3 lines. 



Head impunctate, frontal tubercles obsolete ; antennee half the 

 length of the body, the second and third joints short, fourth joint 

 longer than the two preceding united, black, three basal joints testa- 

 ceous stained with piceous above, ninth and tenth joints flavous. 

 Thorax subquadrate, very obsoletely bifoveolate at the disk ; the 

 latter impunctate, light green ; scutellum black. Elytra slightly 

 widened behind, finely punctured, of the same colour as the thorax ; 

 a narrow transverse basal band deeply tridentate at its posterior 

 margin, and a much wider one, rounded at its margins, close to the 

 apex, black. Legs and breast black, the base of the femora light 

 green. 



75. DiABROTICA VARIOLOSA, Jacoby, P. Z. S. 1878, p. 151. 



76. DiABROTICA puNCTicoLLis, Baly. 



Tl . DiABROTICA VERRUCOSA, Sp. nOV. 



Testaceous ; head and six basal joints of the antennae black ; 

 thorax fulvous, trifoveolate ; scutellum piceous ; elytra rugose, 

 punctate, and transversely wrinkled, metallic green, the lateral mar- 

 gin and the apex testaceous. 



Length 4 lines. 



Head longer than broad, foveolate between the eyes, impunctate. 

 Antennae two thirds the length of the body, second joint short, third 

 joint more than twice as long, the rest of nearly equal length, 

 slender ; the six basal joints black, underside of the first three and 

 the terminal five joints flavous, extreme apex black. Thorax trans- 

 verse, the sides distinctly sinuate near the base, deflexed, and longi- 

 tudinally grooved parallel with the lateral margin, posterior angles 

 tuberculate ; surface impunctate, fulvous, with a deep oblique fovea 

 at each side, and an oblique longitudinal central groove near the 



40* 



