NO. II LARVAE OF THE ELATERID BEETLES GLEN 221 



Fig. 15. — Ludius aeripennis group. 

 a-c, Ludius pruininus (Horn): a, ninth abdominal segment, dorsal view ; 

 b, left urogomphus, lateral view ; c, left urogomphus, dorsal view, d-f, L. latus 

 (Fabricius) : d, left urogomphus, lateral view; e, left urogomphus, dorsal view; 

 /, ninth abdominal segment, dorsal view. 



