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thoracis immersa; spiracula abdominalia in segmentis dorsali- 

 bus intra pleiiras ad basin versus pertusa. 



Victus phytophagus, in cortice, ligno arborum, nonnullis 

 etiam in parencliymate foliorum cunicularius. 



Conspectus morphologicus. 



Articulus secundus antennarum 



conice cylindricus, nonniliil excurvus, apice brevissime 

 barbatus Eiichromati, Eurythyreæ, Anthaxiæ, 

 subglobosus, totus ferme membranaceus, apice dense pilosus 

 Ancylochiræ, Chrysobothridi, Agrilo, Tra- 

 chydi. 

 Articulus tertius antennarum 

 gracilis, conicus plerisque, 



clavatus, pediculo corneo brevissimo, clava molli, elliptica, 

 minute verrucosa Euchromati. 

 Labrum 



transversum plerisque, 

 quadratum Agrilo, Trachydi; 

 angulis rotundatis plerisque, 



incisura separatis, obtuse acuminatis Euchro- 

 mati, Eurythyreæ. 

 Mandibulæ 



quadrifidæ, lobis acutis, binis intermediis majoribus Eu- 

 chromati; 

 trifidæ, lobis acutis, infimo minore Eurythyreæ, An- 

 cylochiræ, Chrysobothridi; 

 bifidæ, lobis rotundatis Anthaxiæ, 

 acuminatis Trachydi; 

 integræ, oblique truncatæ Agrilo. 

 Linea elevata dorsi mandibulæ " 



in dentem acutum sui)ra condylum articularium inferiorem 

 producta Euchromati, Eurythyreæ, Ancylo- 

 chiræ, Chrysobothridi, 

 simplex Anthaxiæ, Agrilo, Trachydi. 



