258 Mr. J. S. Baly's descriptions of 



verging to the apex ; the anterior angles thickened, 

 obtuse, the hinder ones acute ; disk very finely granulose, 

 finely and remotely punctured. Scutellum trigonate, its 

 apex acute. Elytra much broader than the thorax, sub- 

 quadrate-ovate, dilated posteriorly, broadly rounded at 

 the apex, convex, remotely punctured, very sparingly 

 clothed with erect griseous hairs, visible only at the apex 

 and on the lateral margin. 



The erect hairs on the elytra will distinguish this insect 

 fi:om any known species of the genus. 



Monocesta suhlimhata. 



Anguste oblonga, subtus nitida, picea, fiisco pubescens, 

 femoribus fi.isco-fi^ilvis ; supra nigra, opaca, griseo-sericea, 

 fiicie inter oculos thoraceque fusco-fiilvis, hoc rugoso, 

 transversim excavato, fascia discoidali nigra ; elytris 

 rugosis, obscure viridibus, limbo submarginali limboque 

 inflexo obscure rufo-fulvis. 



Long. 3 lin. 



Hab. — Chanchamayo. 



Head wedge-shaped ; vertex rugose ; encarp^ thickened, 

 siibquadrate, contiguous ; jaws shining black ; antennge 

 about half the length of the body, the basal joint fulvous. 

 Thorax three times as broad as long ; sides rounded, con- 

 verging towards the apex, hinder angles obtusely rounded; 

 disk broadly and deeply excavated, transversely rugose, a 

 transverse patch on the disk, its hinder margin emarginate 

 in the middle, black. Elytra narrowly oblong, convex, 

 densely clothed with short adpressed sericeous pubescence, 

 closely rugose. 



Monocesta approximata. 



Elongato-ovata, convexa, pallide rufo- picea, fulvo- 

 sericea, subtus nitida, supra opaca, oculis antennisque 

 nigris ; thorace ante medium profunde transversim ex- 

 cavato ; elytris rugosis, lateribus parallelis, dense fulvo- 

 sericeis. 



Long. 3| lin. 



Hab. — Chanchamayo. 



Head trigonate, not longer than broad, vertex and 

 front rugose, the former with a transverse black patch; 

 encarpse ill defined, lower portion of clypeus elevated into 



