446 Dr. Leach on the Pselaphidce. 



Pselaphus nanus, Reichenbach, MonographiaPselaphorum, 69, 

 aud two other species in my collection of insects now in the 

 British Museum, are the only species that I know certainly to 

 belong to this genus; but I think it probable that Pselaphus 

 ambigmis, Karsteniij and signatus of Reichenbach may also belong 

 to it. 



STIRPS II. 



Corpus breve, convexum. Antennae undecim-articulatae. Palpi 

 maxillares elongati. 



GENUS II. BYTHINUS. 

 PSELAPHI. Fam.ii. Reichenbach. 

 Corpus breve, depressum. 



AntenncB articulo primo crasso, cylindraceo ; secundo primo 

 abrupte crassiore, Maris interne acute producto ; articulo 

 tertio, quarto, quinto, sexto, septimo et octavo aequalibus, 

 lenticulatis ; nono et decimo crassioribus lenticulalis ; un- 

 decimo ovato, apice acutissimo. 

 Palpi maxillares articulo primo filiformi apice gradatim cla- 

 vato ; secundo ovato ; tertio ovato, scutiformi, maximo ; 

 basi angustissimo. 

 Body short, depressed. 



AnienncB with the first joint thick, cylindrical ; the second 

 abruptly thicker than the first ; the third, fourth, fifth, 

 sixth, seventh, and eighth equal, lenticular ; the ninth and 

 the tenth thicker, lenticular ; the eleventh ovate with its 

 extremity very acute. 

 Maxillary palpi with their first joint filiform, gradually clavate 

 (clubbed) ; the second ovate ; the third ovate scutiform 

 (shield-shaped) large, with its base very narrow. 



Bythinus Curtisianus. 

 B. saturate badius aut fusco-badius; ore, antennis, pedibusque 

 rufo-castaneis ; thorace capite latiore ; elytris punctatis. 

 Bythinus Curtisii. Leach, %ool. Miscell. iii, 83. 



