PLATE XXXVII. 



(The cost of this plate has been defrayed by the Carnegie Trust for the Universities 



of Scotland.) 



Pig. 



1. Myriolepis Hibernica, Traquair. Entire specimen showing head and all the fins. 



Natural size. From the Coal Measures of Co. Kilkenny, Ireland. Specimen in the 

 British Museum (P. 9604). 



2. Scale-ornament of the same specimen, magnified five diameters. After Smith 



Woodward. 



3. Fin-rays of the same specimen, magnified five diameters. After Smith Woodward. 



4. P/ianerosteon mirabile, Traquair. A fine entire specimen from the Lower Car- 



boniferous of Glencartholm, Eskdale. Natural size. In the Collection of the 

 Geological Survey of Scotland. 



5. One of the original type specimens from the same horizon and locality. Natural 



size. Collection of the Geological Survey of Scotland. 



6. Head of another of the original specimens from the same horizon and locality, in 



the Collection of the Geological Survey of Scotland. Magnified two-and-a-half 

 times. dr., branchiostegal rays; cl., clavicle ; i.cl., infraclavicle ; mm., maxilla ; 

 o., orbit; op., operculum ; pt., post-temporal; s.op., suboperculum. 



7. Tail deficient in the extremity of the lower lobe of the caudal fin, also in the 



Collection of the Geological Survey of Scotland. Magnified two-and-a-half times. 



