4§ WATSON & Day, A T otes on some Palczozoic Fishes. 



EXPLANATION OF PLATES. 

 Plate I. 



Fig. i. Head of Dipterus va/enciennesi, Sedg. and Murch. x %. 

 Achanarras Quarry, Caithness. L. 8447. M.M. 



Fig. 2. Pelvic region of Rhizodopsis sauroides, Will. Ventral 

 aspect. x 2. L. 8323. M.M. 

 Knowles Ironstone, Fenton, Staffs. 

 P.F., Pelvic Fin ; P.Sp., Pelvic Spine. 



Fig. 3. Head of Tristichopterus a/atus, Eq. Ventral aspect 

 x h. L. 8429. M.M. 

 Deerness Quarry, Deerness, Orkney. 

 P.Op., Preoperculum; Sq., Squamosal. 



Fig. 4. Pectoral fin and second dorsal of another individual 

 of Glyptopomus Ki?mairdi> Hux. x r!. L. 10867. 

 M.M. 



Dura Den, Fifeshire. 



Pec, Pectoral Fin. D 2 . 2nd Dorsal Fin. 



Fig. 5. Dorsal aspect of the palate of Glyptopomus Kinnairdi 

 xi. L. 10867. M.M. 

 Dura Den, Fifeshire. 



Pal., Palatine; P.N., Posterior nares; P. V., Pre vomer; 

 Pt., Pterygoid. 



