New Genera and Species of Phytophaga. 335 
rufo-testaceis; thorace subcylindrico, latitudine vix longiori, 
lateribus fere rectis, a basi ad apicem angustatis; elytris crebre 
punctatis, singulis apice vix productis, acutis. 
Long. 4 lin. 
Hab. (A 
Genus Myocnrous, Erichs. 
1. Myochrous Sallei. 
Elongatus, angustatus, parallelus, subcylindricus, dorso depla- 
natus, rufo-piceus aut piceus, squamulis adpressis albo-fuscis 
dense vestitus; antennis pedibusque pallide rufo-testaceis, 
genubus tarsisque obscurioribus ; thorace elongatulo, lateribus 
obsolete tridentatis, cylindrico, basi subdeplanata, apice an- 
trorsum valde porrecto; elytris fortiter punctato-striatis; tibiis 
anticis intus ante apicem spina brevi armatis. 
Long. 3 lin. 
Hab. Mexico. 
Thorax more than a third longer than broad, sides not dilated, 
armed with three very minute teeth; anterior margin strongly 
produced, entirely concealing the head from above. 
This pretty species may be distinguished from M. explanatus by 
the narrower body, and entirely different form of thorax. 
2. Myochrous explanatus. 
Elongatus, minus parallelus, convexus, dorso deplanatus, piceo- 
zeneus, squamulis fuscis dense vestitus ; antennis, labro, pedi- 
busque (genubus tarsisque exceptis) obscure rufo-testaceis ; 
thorace longitudine paullo latiori, margine antico sat valde 
porrecto, lateribus obsolete denticulatis, a basi ultra medium 
sat explanatis, ante apicem abrupte desinentibus; dorso antice 
convexo, postice deplanato; elytris minus parellelis, fortiter 
punctato-striatis; tibiis anticis intus ante apicem spina 
brevissima armatis. 
Long. 33 lin. 
Hab. Caracas. 
Thorax rather broader than long, sides distinctly dilated, 
gradually diverging from the base to beyond the middle, where 
they abruptly terminate, their outer border furnished with three 
or four indistinct teeth ; sides of elytra slightly oval. 
3. Myochrous armatus. 
Subelongatus, convexus, dorso modice deplanatus, obscure 
piceo-zeneus, squamulis adpressis fusco-fulvis dense vestitus ; 
