180 Mr. H. W. Bates on Longicorn 



well marked, and the surface smooth and glabrous. The 

 basal joint of the antenna? is rugose-punctate, and has a 

 stout tooth exteriorly at its apex. The elytra are not 

 raised posteriorly, and have a longitudinal depression 

 along the suture, in -which are three lines of setiferous 

 punctures. 



Octoplon glahriolum, n. sp. — Lineare, clare fulvum, 

 nitidum, longe sed sparse pilosum ; fronte hand armata, 

 antennislinearibusimpunctatis ; thorace cylindrico, polito, 

 antice et postice valde constricto, supra obtuse tuberose ; 

 elytris thorace plus quam triple longioribus, apice trun- 

 catis et unispinosis, supra, punctis sparsis setiferis 

 exceptis, laevibus, macula rotundata alba, discoidali, ante, 

 alteraque transversa pone, medium; femoribus modice 

 clavatis, apice bidentatis. 



Long. 5-6^ lin. (^ . 



The whole upper surface of the body is highly polished, 

 and the elytra are almost destitute of punctures. 



Chon tales. 



Ihidion carinicolle, n. sp. — Cylindricum, minus angus- 

 tum, fulvo-testaceum, unicolor, politum, breviter setosum ; 

 capite subtiliter scabroso, fronte breviter armata; antennis 

 linearibus, articulo primo inflato-clavato punctate, 3-6 

 modice sulcatis, 4to haud abbreviata ; thorace cylindrico, 

 biconstricto, supra tuberose, tubere centrali magno, elon- 

 gate, interstitiis punctulatis et postice argenteo-tomento- 

 sis ; elytris punctis setiferis distinctis, lineatim congestis, 

 interstitiis punctulatis, apice breviter emarginato-trun- 

 catis, angulo interiori producto, exteriori spiniforme: 

 femoribus fortiter clavatis, posticis (nee intermediis) apice 

 bidentatis. 



Long. (3^ lin. ? (?). 



One example. 



Ihidion griseicolle, n. sp. — Lineare, supra medio depres- 

 sum, subopacum ; capite ruguloso, rufo-testaceo, fascia 

 verticis nigricanti, fronte armata ; antennis linearibus, 

 nigris, cano-pubescentibus, articulo primo tumide clavato, 

 rufo ; thorace cylindrico, supra ante basin sulcato, dorse 

 transverse scabroso et trituberoso, cane subtiliter tomen- 

 toso nee setose, marginibus antice et postice testaceo-rufis ; 

 elytris apice sinuato-truncatis, angulo interiori producto, 

 exteriori longe spinoso, supra sub-dense breviter setosis. 



