88 TRAVELS AMONGST THE GREAT ANDES. 



Var. elytral band very obsolete. 



Length, 3 nun. 



5 . Head black, impunctate, the frontal tubercles contiguous and form- 

 ing a highly raised transverse ridge ; clypeus triangular, strongly raised ; 

 antennjB more than half the length of the body, black, three lower joints 

 testaceous below ; the fourth joint the longest, terminal joints gradually 

 widened ; thorax scarcely broader than long, narrowly margined, with an 

 obsolete transversely oblique depression at each side, testaceous, the disk more 

 or less piceous, impunctate ; scutellum black ; elytra very slightly widened 

 towards the apex, extremely finely and irregularly punctured, the apex 

 nearly impunctate ; legs obscure fulvous, stained slightly with piceous. For 

 Figure see the Plate facing p. 84. 



In one specimen the black longitudinal band of each elytron occupies 

 nearly the entire disk, leaving only the margins light testaceous ; in another 

 this latter colour prevails, Avhile the band is only indicated by obscure 

 piceous ; the clypeus in the female insect is also testaceous and the inter- 

 mediate tibise are of normal structure, the same parts in the male having the 

 apical portion excavated, so that the inner margin is interrupted and pro- 

 duced in a spine. 



18. Diabrotica erythrodera, Baly, Annals of Natur. Hist., 1878. 



Hob. Milligalli (6230 feet). Has also been obtained in Peru. 



The only specimen obtained, differs from the description of Mr. Baly in 

 having the fourth joint of the antennae longer not equal to the two preceding 

 ones united, and in the colour of the elytra which are shading gradually at 

 their posterior portion into brownish, and having also an indistinct ring- 

 shaped mark of the same colour near the apex. In other respects there is no 

 difference to be found. 



