422 



COLEOPTERA. 



joints are triangular and compressed, giving thereby a serrate 

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



Fis. 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 Sca- 

 r ah e idee, while the geniculate antenna is produced when 



Fig. 347. Diflferent forms of antennae : 1, serrate ; 2, pectinate ; 3, capitate (and 

 also geniculate); 4, 5, (i, 7, clavate; 8, 9, lamellate; 10, sen-ate (Dorcatoma); 11, ir- 

 regular (Gp-inus); 12, two-jointed antenna of Adranes c.tcus. 



Fig. 348. 1, bipectinate; 2, flabellate antennas; 3, maxilla? of Bemliidinm; 4, of 

 Hydrophilus; .5, of Pselaplnis; G, maxillaiy palpus of Ctenistes; 7, of Tmesipho- 

 rus; 8, of Tyclius. — i^rom Leconte. 



