No. 380.] DEVONIAN PTYCTODONTIDE. 553 
systematic position further than this, we are content for the 
present with a portrayal of its general appearance, as shown in 
the adjoining views, supplemented by the following notes. 
This unique and in many ways remarkable spine, which must 
be regarded as the type of a new species and genus, belongs to 
Fic. 50. — Belemnacanthus giganteus sp nov. A, C, lateral, and B, inferior 
aspects of spine. X3. 
the Schultze Collection, and was found in the Devonian, near 
Kerpen, in the Eifel District. It is extremely massive and even 
cumbersome, being solid throughout and of formidable propor- 
tions. The terminal portion of the spine is preserved for a 
distance of 27 cm., and the impression of it is continued for 10 
cm. further, on an adherent piece of matrix. The section forms 
