South American species of Diabrotica. 39 



Mas. Antennis extrorsum ampliatis, articulis ultimis duobus 

 abrupte tenuibus. 



Long. 2i — 3 lin. 



Hab. Peru, Callao ; Bolivia. Coll. Baly and Jacoby. 



Head trigonate ; longitudinal ridge on clypeus well-defined ; 

 antennae equal in length to the body, the second joint very short, 

 the third nearly one-half longer, the fourth longer than the pre- 

 ceding two united, the seventh and following two joints in the <? 

 thickened, the tenth and eleventh abruptly narrowed, not broader 

 than the sixth. Thorax nearly one-fifth broader than long ; sides 

 very slightly diverging and faintly sinuate from the base to the 

 middle, thence rounded and converging towards the apex; disk 

 nitidous, more or less deeply bifoveolate, foveae oblong or sub- 

 elongate. Elytra narrowly oblong, scarcely dilated posteriorly, 

 closely and finely punctured ; the coloration varies from viridi- 

 llavous to prasinous, but in most specimens the outer margin and 

 sometimes the suture are narrowly edged with a darker shade of 

 green. 



Spec. 69. Diahrotica formosa, Baly. 

 Journ. Lin. Soc, xix., p. 226. 

 Hah. Venezuela. My collection. 



SiDec. 70. Diahrotica undecimpunctata , Jac. 

 Cist. Ent., ii., p. 524. 



Anguste ovata, postice paullo ampliata, modice convexa, prasina, 

 nitida, pectore, tibiis, tarsis, scutello capiteque nigris, antennarum 

 articulis duobus penultimis fiavis ; thorace bifoveolato ; elytris 

 crebre tenuiter punctatis ; utroque vitta lata fulva a basi ad longe 

 pone medium extensa, punctisque sex, 2, 2, 2 dispositis, nigris. 



Long. 3 lin. 



Hah. Clianchamayo {Thamm). A single specimen in 

 Mr. Jacob3''s collection. 



Longitudinal ridge on the clypeus well-defined ; antennae fili- 

 form, nearly three-fourths the length of the body, the second joint 

 short, the third one-half longer, the fourth more than twice the 

 length of the preceding two united ; the basal joint pale green, the 

 following two piceous, the ninth and tenth pale fiavous. Thorax 

 about one-third broader than long ; sides parallel and distinctly 

 sinuate from the base to just beyond the middle, thence rounded 

 and converging towards the apex ; upper surface nitidous, deeply 

 bifoveolate. Elylra cou\ex, slightly but distinctly sulcate below 



