Coleoptera from Clioniales. 181 



medio depressis, punctis setiferis basi asperatis, flavo-tes- 

 taceis, vitta suturali basin liaud attingenti, et longe ante 

 apicem terminata, apice maculisque duabus elongatis 

 marginalibus fuscis ; pedibus, pectore et abdomine, cano- 

 tomentosis ; femoribus clavatis, apice breviter bidentatis. 



Long. 6 lin. <^ $ . 



Many examples. In colours of elytra, resembles I. su- 

 turale of White, which, however, has a shining thorax. 



Ibidion textile, Thomson, Systema Ceramb. p. 573. — 

 — Apparently common in Chontales. 



Ibidion Mexicanum, Thomson, Systema Ceramb. p. 573. 

 — Also common. 



There appears to be no constant difference between these 

 two species, except the form of the apex of the elytra, 

 which is rounded in Mexicanum, and unispinose in textile. 

 I suspect this is either a sexual difference in this case, or a 

 variable character ; some specimens, in fact, are truncated 

 at the apex, and thus intermediate between the two. 



Eeterachthes ditelus, n. sp. — Cylindricus, robustus, 

 nitidus, setosus, rufus, capite (cum thoracis margine 

 antico) et quarta parte apicali elytrorum nigris ; capite 

 la3vi, fronte breviter armata; thorace cylindrico, lateribus 

 medio tumidis, postice consti-icto, disco antico bituberoso, 

 tubere centrali maxime elevate, interstitiis punctis seti- 

 feris sparsis ; elytris dorso longitudinaliter depressis, 

 sparsim confuse punctatis, apice late rotundatis vix 

 truncatis ; supra, margine antico nigredinis, apicalis fascia 

 lata, obliqua, flava, maculaque simili discoidali ante me- 

 dium; antennis filiformibus, articulis 3-5 robustis, nee 

 carinatis, nee sulcatis, articulis basalibus nigris ; femoribus 

 modice clavatis, apice inermibus. 



Long. 61 lin. 



One example. The species has no resemblance to others 

 of the genus, and belongs to it only in the artificial 

 system adopted by Lacordaire. 



Heterachtlies ebenus, Newman, Entom. p. 9. — A Chon- 

 tales specimen differs only from the Florida species by 

 a minute emargination of the apex of the elytra. It may 

 probably be specifically distinct. 



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