South American species of Diahrotica. 63 



Spec. 109. Diahrotica Mcyeri. 



Anguste ovata, postice ampliata, couvexa, flava, nitida, pectore, 

 abdominis apice, tibiis, tarsis, scutello capiteque nigris, antennis 

 corpore vix longioribus, ad basin flavis, ante apicem albidis ; thorace 

 laevi, convexo ; elytris distincte punctatis, ad latera plicatis, linea 

 suturali integra, et utroque vitta submargiuali ante apicem abbre- 

 viata et pone medium late interrupta, nigris. 



Long. 3i lin. 



Hah. Brazil. My collection. 



Head slightly broader than long ; clypeal ridge not well-defined ; 

 antennae scarcely longer than the body, filiform, the second joint 

 short, the third nearly one-half longer than the second, the fourth 

 much longer than the preceding two united ; the three lower joints 

 flavous, the ninth and tenth white, the rest black. Thorax nearly 

 one-half broader than long ; sides parallel and very slightly sinuate 

 from the base to beyond the middle ; disk nitidous, convex. Elytra 

 narrowly oblong-ovate, dilated posteriorly, convex, distinctly and 

 rather closely punctured, outer disk with several broad shallow 

 longitudinal sulcations ; each elytron with the sutural margin, 

 together with a sublateral vitta, the latter broadly interrupted 

 below the middle and terminating some distance before reaching 

 the apex, black or nigro-piceous. 



Spec. 110. Diahrotica diver sicornis. 



Subelongata, postice vix ampliata, convexa, flava, nitida, pectore, 

 abdominis apice, scutello capiteque nigi-is, antennis pallide flavis, 

 articulis intermediis ultimoque nigris, tarsis fiiscis ; thorace con- 

 vexo, Isevi ; elytris tenuiter sat crebre punctatis, ad latera plicatis, 

 costa subhumerali distincta, fere ad apicem extensa ; utroque 

 linea sutm'ali alteraque sublaterali, ante apicem interrupta, nigro- 

 piceis. 



Long. 2]^ lin. 



Hah. Upper Amazons. My collection. 



Head not longer than broad, subrotundate ; clypeus with a 

 distinct longitudinal ridge ; antennte filiform, shorter than the 

 body, the second and third joints short, equal, the fourth longer 

 than the preceding two united ; pale flavous, the sixth to the 

 eighth, together with the eleventh joints, black, the ninth and 

 tenth yellowish white. Thorax scarcely one-fomrth broader than 

 long ; sides straight and slightly diverging from the base to beyond 

 the middle, thence rounded and obliquely converging towards the 

 apex ; disk convex, shining, impunctate. Elytra narrowly oblong. 



