Tnn s jrtwru of the Geological Society, Vol. V, PLATE, 23. 
Kg:. l. 
Pig-. 2. 
Pig. 4. 
Fig - . 9. 
Fig. 10. 
N.W. 
S.F.. 
Drawn hy T. Weaver. 
TulUshed ly Williotn. Fhil 
London, ifoa. 
G. Cooke sc. 
