422 



COLEOPTEKA. 



joints are triangular and compressed, giving thereby a serrate 

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



Fig. 847. 



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- 

 rabeidcB, while the geniculate antenna is produced when 



Fig. 347. Different forms of antennas: 1, seiTate; 2, pectinate; 3, capitate (and 

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

 regular (Gp-inus) ; 13, two-jointerl antenna of Artranes caecus. 



Fig. 348. 1, bipectinate: 2, flabellate antenna;; 3, maxillfe of Bembidium; 4, of 

 Hydrophilus; 5, of Pselaphus; G, maxillary palpus of Ctenistes; 7, of Tmesipho 

 rus; 8, of Tychus. — From Leconte. 



