30 LE CONTE.— LONGICORN COLEOPTERA 



EUDERCES. 



Antennc-c longiiisculse, filiformes, pubescentes, parce pilosje. 



Oculi divisi, parte inferiore triangular!, superiore remota parva rotundata. 



Thorax postice valde attenuatus, longitudinaliter plicatus. 



Elytra basi gibbosa, postice Isevigata; fere glabra. 



1. E. picirEs. — Niger, elytris gibbere oblongo, basali, ultra medium densissime minus subtiliter granulatis, 

 apice vix truncatis, striga transversa parum obliqua, eburnea. Long. -21 — -3. 

 Clylus picipes, Fab. 



New York and Georgia, abundant. Varies with the anterior half of the elytra, 

 the pectora, feet and antennse rufo-testaceous. 



Group 9. 



This group is founded on a very remarkable insect having the appearance of 

 Dorcadion or Parmena, caught in the mountains of Georgia. It continues still 

 farther the last group in the direction of the Dorcadioid LamicB, but presents such a 

 curious assemblage of characters, that it is very difficult to know where it should be 

 placed, although its true affinities are obvious at first sight. From the preceding 

 group it is distinguished by its large exserted head, short and but slightly inclined 

 front, and entire acetabula, in which it agrees with the fourteenth group alone of all 

 that have been seen by me. The antennse are very widely separated and inserted 

 under a slight margin. They are partly embraced by the eyes, which are very 

 narrow, almost divided, and situated obliquely with the superior portion larger than 

 the inferior. The maxillary palpi are as long as the head, the second and third joints 

 equal and triangular, the last joint very much dilated and securiform ; the anterior 

 tibise have on the posterior face a distinct oblique groove, a character which is found 

 nowhere else in this tribe, and which at once indicates a strong affinity with the 

 Lamia. 



MICHTHISOMA. 



Caput exsertum. 



Thorax ovalis, convexus, postice angustior, lateribus spina acuta obliqua postice armatis. 

 Femora crassissima, tibiis anticis modice curvatis, articulo l""" posticorum elongato. 

 Elytra connata, convexa apice singulatim rotundata. 



The elytra are depressed and almost margined at the base, which gives them an 

 almost gibbous appearance. The anterior femora have a slight angle beneath near 

 the base. The antenna3 are filiform and as long as the body, with a few setse. 



1. M. HETERODOxrs. — Elongalus niger, capite et thorace confertissime grosse punctatis, nitidissimis, pilis 

 cinereis, erectis obsitis, parte basali depressa, granulata. Long. -27. 



