388 Rev. H. Clark on the Halticide of South America. 
confuse punctata: pedes nigri femoribus anterioribus flavis: corpus 
subtus nigrum : antenne nigro-fusce, art. 1-3 flavescentibus. 
Long. corp. lin. 44, lat. lin. 24. 
Brazil. 
Diphaulaca marginata. 
D. oblonga par allela, elytris subtiliter punctatis, flava, elytris seargeeins 
exceptis nigris: caput breve, impunctatum, declive, flavum fronte 
nigro: thorax impunctatus flavus: scutellum fuscum: elytra parallela 
nitida, nigra, marginibus tenuiter et eequaliter flavis: corpus subtus et 
pedes flavi: antenne flavo-fusce, articulis ultimis vel 8-11, vel 9-119, 
vel 10°, 11° albido testaceis. 
Long. corp. lin. 3, lat. lin. 1}. 
Ega, Amazon. Taken by Mr. Bates. 
Diphaulaca apicalis. 
D. oblongo-ovalis, confuse punctata, fusco-flava apicibus elytrorum nigro- 
maculatis: caput impunctatum flavum : thorax fovea transversa basali 
haud profunda, fusco-flavus: seawtellum impunctatum: elytra penitus 
parallela, confuse punctata, macula utrinque apicali insulata nigra: 
antenne fuscze, art. 13° flavo-adspersis, art. 8-11° pallide testaceis : 
pedes et corpus subtus rufo-flavi. 
Long. corp. lin. 3, lat. lin, 1}. 
Taken by Mr. Bates at Ega, Amazon. 
Diphaulaca rigro-apicata. 
D, oblongo-oyalis, punctato-striata, flava, elytrorum apicibus late nigris: 
caput inter oculos arcuate foveolatum: thorax impunctatus, vix ut in 
D. dimidiata latus, rectangularis: scutellum triangulare impunctatum : 
elytra haud parallela, ovalia, punctato-striata, interstitiis (praecipue 
versus latera) costatis: antenne fuscee, art. 1-80 flavis: pedes flavi: 
corpus subtus flavum, abdomine nigro-fusco. 
Long. corp. lin, 24, lat. lin. 13. 
D. wagro-apicata differs from D. dimidiata by the colour of the 
antenn and of the abdomen, the smaller size of the thorax, and the 
peculiar costate markings on the elytra. 
A single specimen of this distinct species was taken by my friend 
Mr. John Gray, at Petropolis, Rio Janeiro, on our visit to Brazil, in 
February 1857. 
Diphaulaca dimidiata. 
D. oblongo-ovalis, confuse punctata, flava, elytrorum apicibus late nigris: 
caput fovea transversa inter oculos, impunctatum: thorax latus, vix 
elytra latitudine sequans, subquadratus, impunctatus: scutellwm trian- 
