PLATE XXXIII. 



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



of Scotland.) 



Fig. 



1 . Hhadinichthys HancocJci (Atthey). Specimen showing the head and pectoral fin, but 



deficient at the caudal extremity. From the Low Main Coal Shale, Newsham, 

 Northumberland. In the Atthey Collection, Museum of the Natural History 

 Society, Newcastle-on-Tyne. 



2. Another specimen, wanting the head and caudal fin, but showing the position of the 



ventral, dorsal, and anal. Also in the Atthey Collection, Museum of the Natural 

 History Society, Newcastle-on-Tyne, and from the same horizon and locality. 



3. Ultadinicldhys lavis, Traquair. Natural size. Erom the Calciferous Sandstone 



Series, Tarras Foot, Eskdale, Dumfriesshire. In the Collection of the Geological 

 Survey of Scotland. 



4. Impression of the outer surface of the mandible and maxilla in the same specimen, 



enlarged by one-half. 



5. Flaidv-scale from the same specimen, magnified five diameters. 



6. Scale further back, same specimen, magnified five diameters. 



7. Bliadinichthys Grossarfi, Traquair. Natural size. From the Coal Measures of 



Salsburgh, Lanarkshire. In the Royal Scottish Museum, Edinburgh. 



8. Flank-scale of the same species, magnified six diameters. 



9. Bhaditiichthi/s Planti, Traquair. Natural size. From the Coal Measures of Colly- 



huist, near Manchester. In the British Museum (Natural History), no. P. 8497. 

 10. Mandible (teeth not exliibited) of the same species, enlarged one and a half times. 

 Deep Mine Ironstone Shale, Longton, Staffordshire. In the Royal Scottish 

 Museum. 



