Rev. H. Clark on the Halticide of South America. 387 
A common species near Rio Janeiro, and probably in other parts 
of Brazil. 
Diphaulaca viridipennis. 
D. lata, ovata, subtilissime punctato-striata, rufa, elytris viridibus nitidis : 
caput impunctatum rufum: thorax lateribus distincte marginatis im- 
punctatus rufus: seutellum triangulare rufum: elytra ovata, satis de- 
pressa, subtiliter striato-punctata, punctis interdum vix ordine dispo- 
sitis: corpus subtus rufum: pedes rufi; tarsi nigro-fusci: antenne 
rufte. 
Long. corp. lin. 23, lat. lin. 1}. 
Taken by Mr, Bates at Ega and also at Santarem, Amazons. 
Diphaulaca costulata. 
D. parallela, rufa, elytris punctatis subcostatis : caput inter oculos quasi 
bituberculatum : thorax ad latera sparsim punctatus: elytra parallela, 
satis depressa, punctata, costis obsoletis (levibus haud punctatis) ornata, 
inter costas puncta conferta haud ordinata minuta apparent, cost 
versus latera evanescunt ; corpus subtus rufum ; pedes rufi; tibiee tarsi- 
que nigri: antenna, art. 1-8° rufi, 4° fusco, reliqui desunt. 
Long. corp. lin. 33, lat. lin. 13. 
To be distinguished from its congeners by its somewhat greater 
breadth of thorax ; in this respect it is, allied to D. punctata, from 
which species it is separated by its obsoletely raised costs on the 
elytra. 
Brazil. 
Diphaulaca rubens. 
D. subparallela, striato-punctata, rufa: caput super oculos fovea veluti 
litera T ornatum: thorax angulis obsoletioribus, ad latera late mar- 
ginatus: scutellum triangulare impunctatum: elytra parallela, satis 
elongata, striato-punctata, punctis crebris minutis nunc striato ordi- 
natis nunc confusis: corpus subtus rufum: antenne nigre, art. 13° 
flavescentibus : pedes rufi; tibis et tarsis nigris. 
Long. corp. lin. 33, lat. lin. 14. 
D. rubens may be separated from D. costulata and D. contempta 
by its even and unstriated elytra, from D. punctata by its regularly 
arranged stria, and from all three by its greater size. 
Brazil. 
Diphaulaca erythrodera, Dej. Cat. 
D. ovalis, punctata nigra prothorace rufo: caput ad frontem longitudi- 
naliter carinatum, et super oculos transverse arcuatim foveolatum, im- 
punctatum, rufum: thorax transversus, late marginatus ad latera, 
leviter punctatus : scutellwm impunctatum rufum : elytra lata, crebre et 
