398 ENTOMOLOGICAL NOTES, 



Inhabits Mexico. M. Audinet Serville, in his excellent 

 ** Classification de la famille des Longicornes" does not appear 

 to have noticed this genus, which may be supposed tlie 

 American representative of Dorcadion. 



Natural Order. — Cucujites, Neicman. 

 Genus. — Hectarthrum, Neivman. 



Generi Passandrt^ affinis, at antennae omnino dissimiles : caput 

 porrectum, prothorace paullo angustius, complanatum, vertice 

 utrinque posticeque transverse profunde sulcato ; oculi parvi, 

 rotundi, laterales, distantes : antennae prothorace vix breviores, 

 moniliformes 11-articulatse, articulo 6°. magno, incrassato, caeteri 

 utrinque pedetentim minoribus, basalis promixis paull6 longior, 

 paullo latior, apicalis compressus, paullo elongatus, margine quasi 

 abscisso, baud corneo ; utroque articulo punctis 2, 3 aut 4 magnis 

 profundis impresso : labrum sub clypeo reconditum : mandibulae 

 validse, extus convexse, apice acuta2, intus 1-dentatae, infra dentem 

 lanatos : maxillarum lacinia (an galea ?) apice incurva, intus lanata, 

 maxipalpi lacinia longiores, 4-articulati, ar!;iculus basalis brevissi- 

 mus, 2"^. et 3"^ triplo longiores, 4"^. ad hue longior, onines sub- 

 cylindrici : labium et palpi Passandrce ? mihi invisa : prothorax 

 complanatus, fere quadratus antice rotundatus productus, lateribus 

 posticeque marginatus, versus latera utrinque 1-striatus: elytra 

 linearia, complanata, prothorace baud latiora, apice rotundata, 

 lateribus marginatis, utroque elytro stria profunda prope suturam 

 alter^que discoidali impresso : pedes brevissimi. 



Hect. curtipes. Piceo -nigrum, glabrum; antenna; picea : 

 utroque elytro ante apicem macidd ovatd sanguinea signato: 

 femora rufa; tibicv rufo-picew ; tarsi jncei. (Corp. long. 

 'Q5 unc. ; lat. '15 unc.) 



Inhabits Gambia. Presented by Mr. Walker. 



Genus. — Passandra, Dalman. 



Pass. Columbus. Piceo-brtmnea, glaberrima ; prothorace, fe- 

 moribus utriusque elytri vitta mediand sordide sanguineis : 

 prothorax antice bisinuatus, angidis acutis ; disco utrinque 

 obsolete 1-striato ; postice angustior: scutelluni mimitian, trans- 

 versum, antice posticeque depressum: utriusque elytri lined 

 ultra medium profunde impressd. (Corp. long. 1*2 unc. ; lat. 

 •325 unc.) 



