701 



Pleu. 



CO Tju 



Coal age fish with 

 a spine in the 

 back of his head, 

 from a compari- 

 son of 23 ex- 

 amples recently 

 found in France, 

 one of them a 

 complete trunk. 

 Length of young 

 and old from 1| 

 to 3^ feet; skel- 

 eton calcified; 

 no shagreen; 

 each pelvis-fi n 

 provided with a 

 robust clasper; 

 barbed spine pro- 

 jecting from the 

 back of the head 

 holds up a small 

 head-fin; two 

 anal fins, one be- 

 hind the other? 

 each built like 

 true legs, or pad- 

 dle ! Nothing in 

 nature as yet 

 known will com- 

 pare with this 

 wonderful struc- 

 ture. See C. 

 Brongniart's de- 

 scription, April, 

 1888, Paris Mus. 

 Nat. Hist., and 

 Dr. Woodward's 

 figure in Lond. 

 Geol. Mag. Sep. 

 1888, p. 422. 



