501 



Silvanus gratiosus Motsch. 



Elongatus, deplanatus, reflexus, opacus, punctatissimus? 

 rufo-testaceus, oculis prominuits; capite antice triangulari, 

 postice parallelo, punctato, inter antennas biimpresso; tho- 

 race capite latiore, punctato, subquadrato , postice leviter 

 bifoveolato, angulis anticis productis, subacutis, posticis 

 rectis, lateribus paulo explanatis, vix arcuatis; elytris tho- 

 race paulo latioribus, subpara llelis, densissime punctato- 

 striatis, interstitiis alternis subelevatis. S. unidentato val- 

 de affinis sed dimidio minor. 



Long. 4 / 8 1. — lat. */« 1. 



Des environs de Colombo. 



Silvanus bicornis Rosenh. I 1 /* 1. -f- * 

 Monotoma concinnula Walk. 1 1. 



Ditoma angustula Motsch. 



Linearis, subcylindrica , opaca, punctatissima, rufo-brun- 

 nea, oculis subprominulis, nigris; capite marginato, antice 

 attenuato, arcuatim exciso, labro transverso; thorace ca- 

 pite paulo latiore, subelongato, g ranuloso -punctato , margi- 

 nato, utrinque unicarinato et profundo unisulcato, éorso 

 antice tri postice bifoveolato, angulis rectis, lateribus po- 

 stice paulo attenuatis; elytris thorace vix latioribus et plus 

 duplo longioribus, dense crenato-striatis, interstitiis alter- 

 nis suturaque in carinis crenulatis, elevatis. 



Long. !•/, 1. - lat. V, 1. 



Des environs de Colombo. 

 JS* 2. 1863. 



33 



