Rey. H. Clark on the Halticide of South America. 403 
Systena discicollis. 
S. subparallela, punctata, nigra; thoracis marginibus et elytrorum fascia et 
margine flavis: caput subtiliter punctatum, nigrum : thorax quadratus, 
impunctatus, fusco-niger, marginibus undique flavis : sewtellum nigrum : 
elytra subparallela, impunctata, nigra, margine tenuiter et vitta media 
vix apicem attinente flavis : antenne rufo-fuscee : corpus subtus et pedes 
(femorum anticorum apicibus exceptis) nigri. 
Long. corp. lin. 23, lat. lin, 3. 
Mexico. 
Systena sinuato-vittata. 
S. subparallela, subtiliter confuse punctata, nigra; capite, thorace, tibiis 
tarsisque et vitta sinuata in utroque elytro flavis: caput rufo-flayvum, 
impunctatum: thorax impunctatus, flavus, marginibus tenue fusco- 
nigris: scutellum nigrum: elytra crebre punctata (punctis minutis con- 
fusis nigris), vitta sinuata media et apice tenuiter flavis : antenne fusce, 
art. 1-3 flavis: pedes flavi; genubus, tibiis tarsisque rufo-flavis: corpus 
subtus flavum. 
Long. corp. lin. 2, lat. lin. 4. 
Venezuela, 
Systena plagiata. 
S. subparallela, leviter punctata, flava; thoracis lateribus, elytrorum sutura 
et vitta submarginali nigris: caput rufum: thorax impunctatus, rufo- 
flavus, marginibus tenuiter nigris: scwtellum nigrum, impunctatum : 
elytra leviter punctata, flava, sutura tenuiter et vitta submarginali 
latiori vix apicem attinente nigris: antenne rufo-fuscee, flavo-annulatze : 
pedes rufo-flavi, genubus fuscis: corpus subtus flavum, abdomine nigro. 
Long. corp. lin. 2%, lat. lin. 14. ; 
Allied in pattern to S. discicollis of Mexico, but quite distinct : 
the flavous colour of the thorax, the colour of the under side, and its 
greater breadth abundantly separate it. 
Rio Janeiro. 
Systena pectorals. 
S. flava ; mesosterno et vittis elytrorum duabus nigris : caput impunctatum, 
rufum : thorax penitus quadratus, flavus, lateribus utrinque preesertim 
ad apicem fusco-marginatis, impunctatus: scwtellum impunctatum, 
nigrum : elytra parallela, punctata, flava, sutura et fascia submarginali 
a basi ad apicem nigris (margine ipso flavo) ; antenne fusce, art. 1-4 
flavescentibus: pedes flavi; tibis tarsisque etiam femoribus posticis 
apicalibus fuscis: corpus subtus flavum; prosterno fusco-marginato ; 
metasterno nigro, abdominis basi fusco-tincta. 
Long. corp. lin. 24, lat. lin. 4. 
Mexico. 
Systena marginicollis. 
S. parallela, subabbreviata, pallide flava, capite et elytrorum vittis duabus 
