Coleoptera from Chontales. 213 



Leptostylus cristulatus, n. sp. — Ovatus, fuscus, elytris 

 utrinque pone medium macula discoidali cinereo-alba ; 

 thorace antice prope marginem anticum tuberculis duobus 

 magnis, alterisque duobus utrinque lateralibus : elytris 

 apice acute rotundatis, supra crista centro-basali 4-tuber- 

 culata, disco seriebus tribus tuberculorum^ antennis arti- 

 culis 4-9 basi flavo-testaceis. 



Long. 3 J lin. 



One example, in Mr. Belt's collection. 



Mecotetartds, nov. gen. 



Corpus elongatum, subdepressum. Antennae c?ris 

 corpore quadruplo vel quintuplo longiores, articulo Imo 

 valido elongato, 3io quam primo duplo longiori infra 

 longe dense et subtiliter ciliato, 4to maxirae elongato 

 corpore duplo longiori, basi infra ciliato apice infra barbate 

 et paulo incrassato, caeteris normalibus tenuibus. Caput 

 ut in Leptostylo, sed tubeins antenniferis magis validis. 

 Thorax subquadratus, lateribus spina brevi post medium 

 retrorsum spectanti. Elytra elongata apice singulatim 

 acute paulo producta, supra sparsim tuberculata. Pedes 

 validi ; femora gradatim clavata ; tarsi breves, articulo 

 primo 2 et 3 conjunctis breviori. Corpus subtus planum; 

 presternum ultra coxas elongatum et valde dilatatum ; 

 mesosternura angustum ; acetabula clausa. Tarsi antici 

 nee dilatati nee barbati. Abdomen segmento apicali 

 dorsali et centrali apice late emarginato. ? . Antennae 

 normales, articulis 3 et 4 paulo elongatis, aequalibus vix 

 ciliatis. Abdomen segmento apicali dorsali et ventrali 

 acute rotundato. 



A Leiopus form remarkable for the enormous length 

 of the fourth antennal joint in the <S . 



Mecotetartus antennatus, n. sp. — Elongatus, griseo- 

 fuscus, thorace vitta lata mediana obscuriori, dorso in- 

 aequali ; elytris vitta laterali a humeris usque ultra medium 

 nigro-fusca, dorso irregulariter elevato-lineatis (carina 

 laterali magis distincta) et tuberculis acutis penicillatis 

 conspersis, lineolisque nonnullis nigro-fuscis ; antennis 

 griseis, fusco-irroratis, articulis 4-10 apice fuscis. 



Long. 6-8 lin. c? ? . 



q2 



