a, Family of Coleopterous Insects. 665 



capite thoraceque colore fiilviori. Pedes longiores, sub- 

 tenues, tibiis apice compressis, et utrinque spin^ minute 

 armatis. Tarsi ut videtur 4-articulati. 



This remarkable species exhibits in its antennae and thorax a 

 structure totally unlike that of any other individual in the family. 

 At the base of the terminal joint of the former organs we perceive 

 two transverse depressions with small corresponding contractions 

 on its outer edge, evidently indicative of two basal rudimental 

 joints. The singular acute horns which arm the clava of the 

 antennae, as well as the rounded anterior margins and acutely 

 dilated posterior angles of the thorax with its short transverse 

 basal lobe, — similar to that found in the genus Lebia, — will not 

 fail to attract the attention. I regret that the only specimen with 

 which I am acquainted, and which is contained in the cabinet of 

 the British Museum, has unfortunately been pierced through 

 the centre of the head, so that I cannot state so accurately as I 

 could have wished the formation of the trophi ; one of the man- 

 dibles, however, which is visible, is slender, acute, and bent at 

 the tip. The maxillary palpi appear to resemble those of this 

 genus, and the labial palpi seem (at least as well as I could 

 examine them,) shorter than in the typical species, and com- 

 posed of three subequal joints. In this uncertainty, therefore, 

 I place the species in the present genus with doubt, although 

 from its general appearance, depressed form, and the flatness 

 and size of its antennae and thorax, it seems to be referable 

 to this rather than to the genus Paussus. The specimen stands 

 in the British Museum cabinet under the manuscript name 

 of " Paussus tridenticornis," a name so inappropriate, that I 

 have not hesitated to alter it to that employed above, in allu- 

 sion to the resemblance which the antennae bear to a small 

 military double-tongued banneret. From the manner in which 



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