88 MR. J. S. BALY ON NEW [ Mar. 5, 
1. Descriptions of new South-American Coleoptera of the 
Genus Diabrotica. By Joszru S. Baty, F.L.S. 
[Received February 15, 1889.] 
Section 1.—Fourth joint of antennez equal in length to the 
preceding two united. 
1. DIABROTICA CONTIGUA, Sp. NOV. 
Elongata, postice ampliata, convewa, flava, nitida ; pectore, scutello 
capiteque nigris, antennis basi et apice flavis ; thorace leviter 
trifoveolato, interdum piceo tincto; elytris sat erebre punctatis, 
sulcis longitudinalibus nonnullis leviter impressis, costa sub- 
humerali fere ad apicem extensa, utrisque linea suturali, ante 
apicem abbreviata, apice paullo ampliata, vitta humerali a basi 
Sere ad apicem extensa, maculaque discoidali pone medium nigris. 
Long. 3 lin. 
Hab. Brazil. 
2. DIABROTICA MELANOPYGA, Sp. nov. 
Elongata, postice paullo ampliata, convexa, flava, nitida ; pectore, 
abdominis apice, tibiis et tarsis posticis necnon capite nigris, 
antennis basi et ante apicem flavis ; thorace bifoveolato, scutello, 
tibiis tarsisque quatuor anticis piceis ; elytris subcrebre puncta- 
tis, utrisque linea suturali, postice attenuata et ante apicem 
obsoleta, macula parva apicali vittaque humerali fere ad apicem 
extensa, nigris. 
Long. 23 lin. 
Hab. Brazil. 
3. DiABROTICA EXTENSA, Sp. nov. 
Subelongata, postice ampliata, convexa, flava, nitida ; pectore, oculis, 
labro antennisque (his apice exceptis) nigris ; thorace leviter 
excavato, utringue obsolete foveolato ; elytris subrugulosis, sat 
erebre punctatis, obsolete longitudinaliter sulcatis, costa subhume- 
rali fere ad apicem extensa, utrisque linea suturali, postice abbre- 
viata, vitiaque sublaterali super costam humeralem posita, nigris. 
Long. 23 lin. 
Hab. Brazil. 
4. DIABROTICA NITIDICOLLIS, sp. nov. 
Subelongato-ovata, postice paullo ampliata, convera, flava, nitida ; 
pectore, scutello capiteque nigris, antennis apice flavis ; thorace 
convexo, levi, fulvo-rufo ; elytris leviter sat crebre punctatis, 
subrugulosis, costa subhumerali longe pone medium extensa, 
utrisque linea suturali fere ad apicem producta, linea humerali 
ante apicem abbreviata, maculaque parva discoidali pone 
medium posita, nigris. 
Var. Elytrorum macula discoidali obsoleta. 
Long. 3 lin. 
Hab. Brazii. 
