South American species of Diahrotica. 67 



base to the middle, thence obUqiiely rounded and converging 

 towards the apex ; disk nitidous, its hinder two-thirds excavated, 

 obsoletely trifoveolate. Elytra subelongate, very sHghtly dilated 

 posteriorly ; moderately convex, strongly plicate below the humeral 

 callus, minutely punctured. . 



Spec. 117. Diahrotica 7nelanopi/ga. 



Proc. Zool. Soc, 1889, p. 92. 



Elongata, postice paullo ampliata, convexa, flava, nitida, poctore, 

 abdominis apice, tibiis, tarsis posticis capiteque nigris, anten- 

 narum articulis basahbus tribus ante penultimoque totis, et (juarti 

 quintique apicibus flavis, penultimo piceo ; thorace bifoveolato ; 

 scutello, tibiis tarsisque anticis quatuor piceis, elytris sat crebre 

 punctatis ; utroque linea suturali apicem versus fere obsoleta, 

 macula parva apicali vittaque humerali, fere ad apicem exteusa, 

 nigris. 



Long. 2| lin. 



Ilah. Brazil, Eio Janeiro. A single specimen, from 

 the late E. Deyrolle's collection, in my own cabinet. 



Head not longer than broad, triangular ; clypeus clothed on 

 either side with adpressed fulvous hairs, the longitudinal ridge 

 well-defined ; antennae filiform, moderately robust, nearly equal to 

 the body in length, second and third joints short, nearly equal, the 

 fourth slightly curved, much longer than the preceding two united ; 

 the three lower joints, the ninth, together with the apices of the 

 fourth and fifth, flavous, the tenth piceous. Thorax rather more 

 than one-half broader than long ; sides straight and parallel from 

 the base to the middle, thence obliquely converging towards the 

 apex ; above convex, impressed on either side with a large round 

 fovea. Elytra narrowly oblong, scarcely dilated posteriorly, con- 

 vex, distinctly punctured ; plicate below the humeral callus, the 

 subhumeral costa broad and extending nearly to the apex of the 

 elytron. 



Spec. 118. Diahrotica suhmarginata. 



Elongata, postice vix amj^liata, convexa, nigra, nitida, thorace 

 bifoveolato, capite, antennis exceptis, elytrisque pallide piceis, horum 

 margine basali, vittisque duabi;s, ante apicem abbreviatis, una 

 suturali, altera submarginali, intus sinuata, nigris. 



Long. 2^ lin. 



Ilah. Brazil, St. Paulo. A single specimen in my 

 >own collection. 



F 2 



