WELLBURX : OX THE GENUS MEGALICHTHYS, AGASSIZ. 
71 
E. J/. Hihherti Ag. Portion of vertebral column. N.C. — ISToto- 
chordal interspace. C. — Centra. N.S. — Neural, and 
H.S., haemal spines. Science and Art Museum, Edin- 
burgh. 
E. 21. {Rhomhoptychius) intermedius A. S. W. Vertebra with 
spinous proces. Author's collection. 
G. M. Ilibberti Ag. Scales. 1. Superior surface, (a) Ganoine- 
covered exposed portion. (b) Covered area showing 
groove. 2. Inferior surface. (a) Bos. Author's col- 
lection. 
Note. — When not mentioned otherwise, the specimens are 
figured natural size. 
