and Species of Gallerucide. 477 
Antenne rather thicker than in either of the two preceding 
species ; the third and three following joints equal in length. 
11. Cerotoma alternata. 
Flava, nitida; ore, vertice, pectore scutelloque piceis; antennis 
nigro-piceis, articulis octavo apice tribusque ultimis albidis, 
ultimo apice nigro, tertio quam quarto distincte longiori; 
vertice minus profunde unifoveolato; epistomate inequaliter 
ruguloso, medio longitudinaliter carinato; thorace leevi, 
_profunde transversim suleato, sulco sat distincte quadrisinu- 
ato; elytris minus profunde punctatis, costatis, costis alternis 
minus distinctis, interspatiis planis, pallide violaceo-piceis, 
plaga apicali costisque alternis flavis. (Faem.) 
Long. 3 lin. 
Hab. Amazons. 
Smaller than, but similar in form to, C. heterocera; the third, 
fourth and fifth joints of the antenne gradually decreasing in 
length. 
Sectio II. Thorax impressus vel sulcatus, sulco nunquam quadri- 
sinuato ; elytrorum coste vel obsolete vel indistincte. 
12. Cerotoma Deyrollei. 
Nigra ; capite, thorace, scutello, abdomineque castaneis ; pedibus 
flavo-fulvis ; antennis, elytrorumque limbo inflexo et fasciis 
tribus (harum prima basali, punctum humerale nigrum in- 
cludente, secunda prope medium, tertia apicali) flavis; epi- 
stomate subremote punctato, basi longitudinaliter carinato ; 
thorace tenuiter subcrebre punctato, disco profunde trans- 
versim bifoveolato. (F'aem.) 
Long. 2# lin. 
Hab. Magdalena River, Columbia. 
13. Cerotoma quadripustulata. 
Nigra, nitida; capite, thorace scutelloque castaneis; thorace 
tenuiter punctato, arcuatim transversim sulcato, sulco utrin- 
que profundius impresso; pedibus antennisque flavis, his 
extrorsum fuscis; elytris tenuiter punctatis, utrisque fascia 
ante medium antice emarginata utrinque abbreviata, macu- 
J4que subrotundata infra medium, flavis. 
Mas.—Facie infra antennarum insertionem profunde excavata 5 
antennis simplicibus. 
