Coleoptera from Chontales. 229 



apicali elytrorum (antice undulato) violaceo-nigro ; capite 

 vitta verticali fronteque nigris, hac macula mediana fulva : 

 thorace brevi, transverse, vitta dorsali nigra ; elytris paulo 

 post basin foliaceo-ampliatis, utrinque 4 carinatis, 2-3 ante 

 apicem in una conjunctis ; antennis nigris ; corpore 

 subtus nigro, coxis femoruraque basi flavo-testaceis ; pro- 

 sterno latiusculo, quam in L. simulatrice angustiori, 

 mesosterno latissimo quadrate. 



Long. 4^-7 lin. S ■ 



Several examples of this distinct species, all females. 



He'inilophus prolixus, n. sp. — Valde elongatus, sub- 

 linearis, fulvo-ochreus; antennis nigris, corpore subtus 

 lateribus, tibiis, tarsis, vittaque verticis, fuseis ; capite 

 aureo-fulvus, fronte modice convexa, tuberibus antenni- 

 feris antice fuseis ; thorace cylindrico, ad basin nullomodo 

 angustato ; elytris ad humeros perobliquis, vix thorace 

 latioribus, apice rotundatis, carina laterali valida integra, 

 epipleuris parallelis, disco lineatim punctulatis, interstitio 

 quarto paulo elevate; antennis articulis 1-3, et 4 infra, 

 dense et longe nigro-penicillatis, ca3teris tenuibus, sparse 

 setesis. 



Long. 6 lin. 



One example, in Mr. Belt's collection. 



Isomerida pictlcornis , n. sp. — J. albicoUi proximo affinis, 

 at gracilior ; nigro-fusca, antennis articulis 5-6 testaceo- 

 albis ; capite thoraceque flavo-griseis, vitta mediana fusca 

 ad thoracis basin dilatata ; elytris parallelis, apice rotun- 

 datis, dorse sublineatim punctatis, sine linea elevata; 

 subtus, pro et mesosterno, coxis, femorumque basi, melleo- 

 flavis. 



Long. 4| lin. 



Several examples. 



Isomerida albicollis, Casteln. Hist. Nat. Col. II. 488. 

 — A variety in Mr. Belt's collection, differing from 

 Amazons and Cayenne specimens of this species, only by 

 an indistinct pale vitta on the disc of the elytra. 



Isomerida suhdilatata,n. sp. — Vix convexa, elytris pone 

 medium usque prope apicem leviter dilatatis ; rufescenti- 

 fulva, elytris interdum (basi exceptis) nigrescentibus ; 

 antennis nigris, articulis basi (a 3io) angustissirae albo- 



e2 



