336 MISCELLANEA ENTOMOLOGICA, 



Labium longum subangustum truncatum crassum longitudi- 



naliter carinatum apice bisetosum paraglossia libei'is palpi- 



formibus vix labium superantibus. 

 Maxillce subelongatEe subgraciles. 

 Palpi maxillares longi apice oblique truncati articulo secundo 



longissimo quarto penultimo breviori. 

 Palpi lahlales longi apice sub triangulares oblique truncati 



articulo secundo longissimo. 

 Mandibulce masimse porrect^ intus lobatte. 

 Lahrum abest. 



Antennce sublongge filiformes articulo secundo breviori. 

 Caput maximum crassum subquadratum clypeo profande emar- 



ginato ; subtus concavum utrinque fortiter carinatum. 

 Thorax brevis subangustus postice angustatus. 

 Elytra ovalia subconvexa. 

 Pedes sublongi baud validi tibiis inermibus tarsis sub tri angular i- 



bus. 

 Corpus apterum pedunculatum. 



Mecynognathus Damelii. 

 Long. 18 lin. (mand. incl.) 



Niger subopacus, capite piano antice subcirculariter impresso 



angulis posticis carinatis, tborace marginato capite angusti- 



ori subcordato medio leviter canaliculate postice trans- 



versim impresso, elytris ovalibus obsolete striatis marginatis, 



pedibus piceis. 



The most striking peculiarity about tbis insect is tbe enormous 



size of the head and mandibles, the two together nearly equalling 



in length the remainder of the body. 



The right mandible which is broken off at about half its 

 length, has a pointed lobe on its inner surface ; the left has a 

 more rounded lobe on its inner surface about the middle, and 

 terminates in an obtuse point without the slightest tendency to 

 curve inwai'ds. 



The maxillary palpi are as long as the mandibles, and have 

 as well as the labial palpi the second joint much longer than the 



