68 DESCRIPTIONS OP NEW SPECIES. 



EULJLCHUS ER. 



354. Eu. carinatus. Elongatus cylindricus, ater opacus, subtilis- 

 sime parce pubescens, caj)ite thoraceque granulato-punctatis, hoc latitu- 

 dine longiore 4-costato, elytris rugosis acute costatis, interstitiis latis 

 planis, remote bistriatim punctatis, ore antennis pedibusque obscure 

 rufis. Long. *13. 



Upper part of Georgia ; rare. 



NEMATIDIUM ER. 



255. N. filiforme. Valde elongatum lineare cylindricum, rufo- 

 piceum nitidum, capite thoraceque profunde haud dense punctatis, hoc 

 latitudine plus duplo longiore, lateribus late sinuatis, elytris thorace 

 plus sesqui longioribus, striato-punctatis, iuterstitiis vage punctatis et 

 rugosis, apice oblique declivibus et utrinque vage sulcatis. Long. '48. 



North Carolina and Florida ; Baron R. Osten Sacken. Re- 

 markable for the extreme elongation of form. 



OXYLAEIHIJS EB. 



256. O. americanus. Elongatus cylindricus, ferruginous nitidus, 

 pilis erectis parcis vestitus, capite thoraceque parce grosse punctatis, 

 elytris punctis grossis seriatim positis, tibiis anticis tridenticulatis. 

 Long. *11. 



Middle States; rare. Pa., York Co., Dr. Melsheimer. 



SOSYLUS ER. 



25V. 8. COStatus. Valde elongatus, niger subnitidus, capite thorace- 

 que aciculato-punctatis, hoc latitudine sesqui longiore, postice sensim 

 angustato, lateribus antice late rotundatis postice subsinuatis, angulis 

 posticis rectis, elytris margine sutura costisque utrinque 3 elevatis, inter- 

 stitiis latis subtilius haud dense punctatis. Long. -18. 



Southern States; Dr. C. Zimmermann. I take pleasure in 

 correcting an error I formerly committed in considering this spe- 

 cies as indicating a new genus of Colydiini, to which I gave the 

 name of Pleuridium. The hind coxae are widely separated, and 

 although the general form of body is that of Colydiini, the genus 

 must be placed, as has been properly done by Erichson, in Both- 

 riderini. It differs, however, remarkably from Bothrideres, not 

 only in the form of body, but by the anterior COXEB being con- 

 tiguous, and by the first joint of the tarsi being very long. The 

 structure of the buccal cavity is also very different from Bothri- 



