178 Mr. H. W. Bates 



on ijonqicorn 



Thorax elongatus, medio leviter dilatatus, c? inermis, ^ 

 spina distincta parva. Elytra ante apicern rotundata, 

 apice utrinque emarginata. Antennae J* corpore tertia 

 parte longiores, $ corpori sequales ; articulis 3-4 supra 

 sulcatis et cT apice longe spinosis, in ? articulo 5 etiam 

 longe spinoso. Acetabula intermedia extus clausa. Pedes 

 robusti ; femora abrupte clavata, apice hand spinosa ; tibiae 

 hand carinatse. 



The only structural character which distinguishes the 

 insect on which this genus is founded, from the other 

 forms allied to Sphcerion, is the absence of carinee from 

 the tibige ; but this distinction is so strongly supported 

 by difference of facies, that there can be no doubt of the 

 necessity of the genus. The body is more convex, and 

 more rounded towards the apex, and the whole surface 

 thickly punctured, and pubescent without being opaque, 

 as in Sphcerion {Mephritus) cinerascens . 



Miltesthus marginatus,n. sp. — Rufo-ochraceus, breviter 

 cinereo-pubescens, elytris margine laterali et sutura plus 

 minusve fuscis ; capite dense eequaliter scabroso ; thorace 

 supra paulo iaasquali, crebre grosse vermiculato-rugoso, 

 linea abbreviata dorsali sublsevi ; scutello ai-genteo-to- 

 mentoso ; elytris apice breviter sinuatim truncatis, angulis 

 productis, supra subgrosse, regulariter, discrete, crebre 

 punctatis : pro thorace subtus transversim plicate. 



Long. 8| lin. S ? . 



Chontales. Many examples. 



Ironeus, nov. gen. 



Peribceo similis, sed oculis minoribus, vix prominentibus, 

 subtenue granulatis,. supra angustis. Caput infra oculos 

 breviter prolongatum, vertice intra oculos paulo depresso ; 

 tuberibus antenniferis vix elevatis, antice emarginatis. 

 Palpi paulo elongaii, maxillares longiores, articulis ultimis 

 modice dilatatis, truncatis. Antennae ( S ) corpore duplo 

 longiores, setaceae, subtilissime pubescentes, basin versus 

 sparsim ciliata?, articulis 3-10 longitudine subaequalibus, 

 3-5 apice breviter spinosis, supra carinatis. Thorax 

 capite paulo latior, cylindricus, medio paulo rotundatus, 

 inermis, supra leevis. Elytra modice elongata, postice 

 attenuata, apice truncata et bidentata, supra regulariter 

 modice punctata. Femora omnia subabrupte clavata, 

 apice inermia; tibiae posticae extus carinatas, tarsi breves. 

 Acetabula antica extus clausa, intermedia aperta. 



