8iiicly of Genera of Coleopiera. 47 



1788. Swederus, in tlie Acta. Holmiensia, defines the 

 genus Ceraptenis . 



1789. Thunberg, in his Periculum Entomologicum, 

 describes three genera, Auchenia [= Crioceris, Geofi'.], 

 Eurychora {E. ciliata) , and Calolymus [= Lymexylon, 

 Fab.] . 



Olivier, in the fourth volume of the Encyclopedief 

 describes Brachycerus and Macrocephalus . He also, in 

 the first volume of his Entomologie, describes the genus 

 Hexodon. 



1790. Fabricius, in the first volume of the Danish 

 Skrivter, describes six so-called new genera, of which 

 two are merely appropriated from Geoffrey : || Ligniperda 

 \_nec Pallas, =Sinodendron, Hellw.], Tetratoma, Diaperis 

 [GeofFroy], Anthrihus [Geofiroy], || Scolytiis \_nec Geof- 

 frey, = Epactins, Schn., Omophron, Latr.] , Hypophloeus 

 [=Gorticeus, Pill.]. He selects A. alhinus as a type of 

 Anthrihus, but it was not known at all by Geofiroy. 



Preyssler, in his Verzeichniss, figures the genua 

 Claviger. 



Olivier, in the second volume of his Entomologie, adds 

 six genera: Trogossita {T. cceridea) , 8caphidium, Tillus, 

 Drilus, Melasis, Oebrio. f Ips is here used for the family 

 Colydiidce. 



Scriba, in his Journal, forms the genus Valgus. 



1791. Olivier, in the sixth volume of the Encyclopedie, 

 describes the genus Dryops (type D. auriculatus) , being 

 thus a clear year in advance of Fabricius. 



Schneider, in his Magazin, proposes several genera in 

 the notes. Platystomus {Curcidio alhinus and latirostris) , 

 Epactius [Scolytus, Fab., nee Geofi'.], Bhynchites [It. 

 Bacchus, etc.) , 



1792. Bosc, in the Journal d'Histoire Naturelle, forms 

 the genus Bipiphorus on B. sid)dipterus . Why this name 

 has been transferred to B. paradoxus or B. flahellatus it 

 is difiicult to see ; those species must retain the names 

 Metcecus and Emmenadia respectively, and Myodites will 

 disappear. 



Olivier, in the third volume of his Entomologie, adds 

 only two genera, Cossyphus and (Edcmera. The type of 



