228 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



Fig. 22. — Species of Ludius. 



a-c, e, Ludius cinctus (Paykull) : a, whole larva, dorsal view (showing color 

 pattern) ; b, left maxilla, ventral view; c, ninth abdominal segment, dorsal view 

 (color pattern omitted) ; e, left urogomphus, lateral view, d, f, L. bipustulatus 

 (Linnaeus) : d, ninth abdominal segment, dorsal view (color pattern omitted) ; 

 /, eighth abdominal segment, dorsal view (showing color pattern). 



