8o ORDER 1. Dytifcus. 



Genus XXIV. Dytiscus. 



Linn. Syft. Nat. page 665. 

 The antennas of the Dytifcus are either 

 fetaceous, or increafe in fize towards the 

 end, and have a perfoliated capitulum or 

 head. 



The hind feet are hairy, made for fvvim- 

 ming, and are armed with fmall claws. 



This genus is divided into two families ; 

 the firft compofed of thofe which have per- 

 foliated antennae; the fecond of thofe in 

 which the antennae are fetaceous. 



Geoffroy has formed from the two Linnaean 

 families of Dytifci, as many genera. To thofe 

 with perfoliated antennae (which he fays are 

 fhorter than the palpi) he gives the generical 

 name of Hydrophilus ; the others, in which, 

 according to him the antennse are filiform, and 

 longer than the head, he calls Dytici. 



Schaeffer, who has adopted this dtvifion of 

 the Linnean genus, fays, that the tarfi of the 

 Dytifcus have five articulation?; that the body is 



obi on 2 



