i-22 



COLEOPTEKA. 



joints are triangular and compressed, giving thereby a serrate 

 outline to the inner edge; or clavate, as in the 8 il phi due-, 



Fig. :U7. 



where the enlarged terminal joints give a rounded club-shaped 

 termination ; lamellate, when the terminal joints are prolonged 



Fig. .'548. 



internally, forming broad leaf-like expansions, as in the Sr<i- 

 ruheidw , while the geniculate antenna is produced when 



FIG. 347. Different forms of antennae : 1, serrate; 2, pectinate; 3, capitate (ami 

 also geniculate); 4, 5, 0, 7, clavate; 8, 9, lamellate; 10, serrate (Dorcatoma); II, ir- 

 regular (Gyrinus): 12, two-jointert antenna of Aclranes caecus. 



FIG. 348. 1, bipectinate: 2, flabellate antennae; 8, maxilla 1 of Bembirlium; 4. of 

 Hydrophilus ; 5, of Pselaphus ; 6, maxillary palpus of Ctenistes ; 7, of Tmesipho- 

 rus; 8, of Typhus. From Leconte. 



