FOSSIL AND RECENT 



4i 



A 



B 



pu2 



D 



pu2 



Fig. 18. Anaethalion. Caudal skeletons of various species. Based on camera lucida 

 drawings. A. Anaethalion (?) cf. subovatus from B.M.N.H. P. 3723 ; B. A. angustus 

 from B.M.N.H. 37927 ; C. A. angustissimus from B.M.N.H. 37901 ; D. A. knorri from 

 B.M.N.H. 37839 ; E. A. gigas from B.M.N.H. P. 10380. A to D have been reversed. 



