422 



COLEOPTERA. 



joints are triangular and compressed, giving thereby a serrate 

 outline to the inner edge; or clavate, as in the JSiljihidce, 



Fig. 347. 



where the enlarged terminal joints give a rounded club-shaped 

 termination ; lamellate, when the terminal joints are prolonged 



Fig. 348. 



Internally, forming broad leaf-like expansions, as in the *S'off- 

 rabeidce, while the geniculate antenna is produced when 



Fig. 347. Different forms of antennae: 1, serrate; 3, pectinate; 3, capitate (and 

 also geniculate); 4, .'5, 6, 7, clavate; 8, 9, lamellate; 10, serrate (Dorcatoma); 11, ir- 

 regular (Gyi-inus) ; 1'2, two-jointed antenna of Adranes caucus. 



Fig. 348. 1, bipectinate; 2, flabellate antennie; 3, raaxillse of Bembidium; 4, of 

 Hydrophilus; 5, of Pselapluis; C, maxillaiy palpus of Ctenistes; 7, of Tmesipho- 

 rus; 8, of Tychus. — From Leconte. 



