422 



COLEOPTERA. 



joints are triangular and compressed, giving thereby a serrate 

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



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 Sea- 

 rate idee, while the geniculate antenna is produced when 



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

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

 regular (Gyrinns); 12, two-jointed antenna of Adranes csccus. 



Fig. 348. 1, bipectinate; 2, flabellnte antennje; 3, maxilloe of Bembidinm; 4, of 

 Hydropliiliis; 5, of Pselaphns; 0, maxillary palpus of Cteuistes; 7, of Tmesipho- 

 rus; 8, of Tychus. — From Leconte. 



