ANALYSIS. 509 



all events remarkable, that whenever a groupe does not 

 contain five minor groupes, some chasm in the series of af- 

 finity should thus be apparent. In stating so curious a 

 fact, it becomes very desirable that it should be supported 

 by the argumentum ad verecundiam, but I can find no 

 observation resembling this in any author but Linnaeus. 

 In that part of his Diary which relates, not to natural his- 

 tory, but to medicine, he says that nature is balanced by 

 contraries, and acted upon " numero quinario." The 

 whole passage is curious, but at the same time, I confess, 

 beyond my comprehension, as it seems to have been also 

 beyond that of his learned biographer, who, in allusion to 

 it, says—" It was his opinion that Nature acts numero qui- 

 nario, as he informs us in his Diary ; but he has no where 

 explained himself on this abstruse subject ; and the hypo- 

 thesis seems to be one of those eccentric excesses of ima- 

 gination in which ingenious minds are apt to indulge, with- 

 out the possibility of being followed." Tempus ducamus, 

 et dies alteri lucem afferent. 



TYPUS V. Antennse articulo tertio longiori, quarto etquinto 

 pateriformibus, septimo maximo subhemisphsrico capituli 

 globosi basin formante. Clypeus rhomboideus apice sex- 

 dentatus quadridentatus bidentatus vel emarginatus. Tho- 

 rax puncto parvo utrinque impresso. Abdomen truncatum 

 subdepressum, elytrorum margine externo post humeros 

 acutos profundi et abrupte sinuato. Mediosternum oblon- 

 o-um elevatum retusum vel subporrectum. Pedes pilosi 

 coxis intermediis subdistantibus, femoribus anticis saepius 

 intus unidentatis et tibiarum calcaribus mobilibus. Tibia? 

 antics triquetral extus tridentatae, tarsis minimis instructs; 

 posticae elongate subarcuatas triquetral angulis serrulatis, 

 interior! duplicate. 



