LIST OF ILLUSTRATIONS xi 



FIGURES PAGE 



39. Rhadinichthys modulus Dawson. Lower Carboniferous; Beliveau, 



New Brunswick. Cotypes 263 



40. Rhadinichthys deani, sp. nov. Base of the Waverly; Boyle county, 



Kentucky. Detached heads forming nuclear mass of phosphatic 

 nodules. These latter are split open in. such manner as to 

 show the fossilized organs of the brain 267 



41. Rhadinichthys deani, sp. nov. Base of the Waverly; near Junction 



City, Boyle county, Kentucky, a, b, Cranial shields with partly 

 denuded surface ornamentation, showing course of sensory 

 canals and parieto-frontal sutures, c, Impression of internal 

 surface of cranial roof showing detail of superficial ornament 268 



