92 
an 
MR. J. S. BALY ON NEW [Mar. 5 
verticis macula, thoracis maculis quatuor, arcuatim dispositis scu- 
telloque nigris ; thorace trifoveolato ; elytris sat crebre punctatis, 
utrisque macula oblonga fusca infra basin juxta suturam, plagis- 
gue tribus, prima subrotundata callum humeralem amplectente 
duabusque transverso-oblongis, una prope, altera inter medium 
et apicem positis, nigris. 
Long. 2 lin. 
Hab. Brazil. 
21. DIABROTICA MELANCHOLICA, sp. nov. 
Anguste ovata, postice ampliata, convewa, nigra, nitida, femo- 
rum basi antennarumque articulo apicali albidis; thorace 
transverso, pone medium bifoveolato, nigro-piceo; elytris 
subrugulosis, sat crebre punctatis, punctis apicem versus fere 
obsoletis, utrisque limbo externo apice paullo ampliato, 
punctoque juxta suturam prope medium, albidis. 
Mas. Antennarwm articulis duobusapicalibus compresso-dilatatis. 
Long. 2 lin. 
Hab. Ecuador. 
22. D1aBROTICA ZONULA, Sp. nov. 
Sat late ovata, postice ampliata, modice convexa, nigra, nitida, 
antennis extrorsum albidis; thorace fiavo-fulvo, obsolete 
bifoveolato; elytris minus erebre punctatis, limbo externo, 
apice paullo ampliato fasciaque prope medium flavo-fulvis. 
Long. 3 lin. 
Hab. Ecuador. 
23. DIABROTICA UNIFASCIATA, Sp. Nov. 
Late ovata, postice ampliata, modice convexa, dorso subdepla- 
nata, nigra, nitida ; thorace albido, obsolete bifoveolato ; elytris 
tenuiter remote punctatis, limbo externo, apice ampliato fas- 
ciaque prope medium albidis. 
Long. 3 lin. 
Hab. Peru. 
Distinguished from the preceding species by the unicolorous antennee 
d the nearly impunctate elytra. 
24. DIABROTICA SPILOPTERA, Sp. Nov. 
Anguste ovata, postice ampliata, convexa, nigra, nitida ; femori- 
bus, abdomine (hoe piceo tincto) elytrisque flavis, his minus 
crebre punctatis, utrisque plagis tribus, prima infra callum 
humeralem trigonata, secunda prope medium transversa, 
tertiaque pone medium subrotundata, nigris. 
Long. 2 lin. 
Hab. Brazil. 
25. DIABROTICA ALBOMARGINATA, Sp. Nov. 
Late oblongo-ovata, postice ampliata, modice convexa, dorso 
