m 



XXII. On the Stirpes and Genera composing thS 

 Family Pselaphidea; with tht Names of theBri* 

 tish Species. 



PSELAPHIDEA. 



DiMERA. Latreille. 

 PsELAPHUs. Herbst. &c. 



Character. 



Insecta coleoptera, elytris abbreviatis, tarsis triarticulatis, 

 unguibus monodactylis. 



Synopsis Stirpium et Generum. 



I. AntennxE W-articulatcp. Palpi ina.viliares elojigati 

 Stirps 1 . Corpus elongatuni depres- 



suni. 



AntenncB articulis 1 et 2 crassioribus. 

 Palpi maxillares articulo ul- 

 timo conico - - - 



Stirps 2 *. Corpus breve convexum. 



A. Palpi maxillares articulo ultimo 

 securiformi. 



Anten7i(e articulo secundo primo cras- 

 siore - _ _ _ 



Antennce articulo secundo primo te- 

 nuiore : articulo quinto ar- 

 ticulis quarto et sexto non 

 crassiore. - - 7 



Genera. 



1. Euplectus. 



2. Bythinus. 



3. Arcopagus. 



* Hujus Stirpis sectionem alteram (D.) forte efformat genus Cte- 

 NISTES Reich. Monog. Psel. 75. " Palpi maxillares articulis 3 et 4 ol- 

 hngis, transversim impositis, extus acuminatis, seta terminali." 



